The Command Access Technologies ETH4W4545 693 CH-BB79 Electrified Energy Transfer Hinge is a concealed low-voltage power-transfer hinge for commercial access-control doors. This model measures 4-1/2" high x 4-1/2" wide and features a five-knuckle, standard-weight, full-mortise, ball-bearing steel-base hinge in 693/L1 Black (black powder-coated / sprayed black appearance). Its CH-BB79 configuration conceals electrical wiring inside the hinge so power and signals may travel from the door frame to the moving door leaf without an exposed cable loop.

Correct electrical configuration: The ETH4W model contains four 26 AWG conductors (4 x 26 gauge wires). This is not an ETH4WH heavy-wire hinge, which instead uses two 18 AWG power conductors and two 26 AWG signal/control conductors. Select the exact conductor quantity and gauge required for the connected electric lock, exit trim, monitor or other compatible door device; evaluate voltage drop, inrush current, duty cycle and power requirements before installation.

Exact finish and hinge size: This version is 693 Black on a ferrous steel-base, ball-bearing CH-BB79 hinge, 4-1/2" x 4-1/2". It is not the 626 Satin Chrome, 613 Oil Rubbed Bronze or 630 Satin Stainless Steel finish. Likewise, do not confuse the 4545 hinge with the wider 4550 (4-1/2" x 5") or taller 5045 (5" x 4-1/2") versions. Verify the actual door and jamb templates before ordering.

Key Features and Benefits

• Concealed four-wire transfer: Four factory-installed 26 AWG electrical conductors route compatible low-voltage power, signaling and monitoring from the jamb to the door leaf.
• 4-1/2" x 4-1/2" commercial hinge: Standard commercial hinge dimensions, subject to matching frame and door mortises, screw holes, clearances and approved manufacturer preparation.
• Five-knuckle, standard-weight design: The CH-BB79 configuration identifies the ball-bearing steel-base commercial hinge; verify the current factory template.
• 693/L1 Black finish: Black, powder-coated / sprayed-black appearance for commercial openings using dark-finish door hardware.
• Steel-base ball-bearing construction: Ferrous steel-base hinge with the manufacturer's specified bearing construction, suitable for correctly engineered commercial door openings.
• Protected wire routing: Conceals wiring through the hinge, avoiding an exposed surface wiring loop when installed with appropriately prepared internal raceways.
• Low-voltage access-control integration: For compatible electrified cylindrical or mortise locksets, electric exit trim, door-mounted signal devices and status circuits within approved electrical limits.
• ETH4W family electrical rating: Manufacturer information lists 1 A at 24 VDC per designated conductor pair; check the current Command Access cut sheet and the connected device's requirements.
• Manufacturer family wire-access features: Command Access literature describes a centrally located wire access opening and non-conductive protective cap; confirm configuration on the delivered hinge.
• Lead options: A four-foot lead option is described for the ETH hinge family; confirm actual lead length, termination, connectors and package contents before ordering.
• Commercial fire-rated application: Product listings identify fire-rated and UL-F hinge-family configurations; suitability is conditional on the exact door, frame and hardware listing and applicable codes.
• Manufacturer warranty: Command Access's ETH family literature advertises a three-year warranty, subject to current terms and exclusions.

Product Specifications

Typical Commercial Applications

• Access-controlled doors with appropriately rated electric mortise or cylindrical locksets
• Compatible electrified exit trims and other manufacturer-approved electric door hardware
• Low-current door-mounted readers, indicators and status-monitoring circuits
• Commercial offices, schools, institutions, healthcare facilities and other controlled-access buildings
• Replacement or new-work installations prepared specifically for 4-1/2" x 4-1/2" five-knuckle power-transfer hinges

ETH4W versus ETH4WH: Do Not Confuse the Conductors

ETH4W uses four 26 AWG conductors. By comparison, ETH4WH includes two 18 AWG wires and two 26 AWG wires. Many powered latch-retraction devices or high-inrush electric locks require a heavier power pair, specialized power controller or another approved power-transfer method. Do not substitute this ETH4W simply because it has four wires or matches the hinge dimensions. Verify continuous and inrush current, voltage drop, cable length and manufacturer wiring instructions.

Pre-Installation and Ordering Checklist

1. Check the correct hinge size: Match a 4-1/2" high x 4-1/2" wide full-mortise hinge. Do not substitute a wider 4550 or taller 5045 model.
2. Verify the finish: Confirm 693/L1 Black, black powder-coated / sprayed-black appearance, and the CH-BB79 steel-base configuration.
3. Match hinge preparations: Confirm the manufacturer's five-knuckle template, ball-bearing model, screw locations, hinge corners and door/frame clearances.
4. Calculate electrical loads: Determine whether four 26 AWG wires satisfy the connected hardware's current, startup, duty-cycle and signal needs.
5. Prepare concealed wire raceways: Follow factory-approved jamb and door leaf wiring preparations; protect the harness from pinching, abrasion and sharp edges.
6. Confirm rated-opening compliance: For rated doors, use only approved hinge and wiring preparations and preserve applicable egress functions.
7. Test after installation: Check continuity, complete door swing, connected locking/monitoring devices and all required safety functions.

What's Included

One Command Access ETH4W4545 693 CH-BB79 4-1/2" x 4-1/2" black-finish power-transfer hinge with four 26 AWG wires. Verify lead length, connector options and fasteners with the distributor before ordering.

Not Included

Electric lock, electric strike, exit device, latch-retraction motor, access-control reader, controller, power supply, door/frame and field wiring accessories. This listing is for the electrified hinge only.

The Command Access Technologies ETH4W4545 630 CH-BB91 Electrified Energy Transfer Hinge provides a concealed electrical pathway between a commercial door frame and the moving door leaf. This 4-1/2" high x 4-1/2" wide, five-knuckle, standard-weight, full-mortise hinge has a 630 / US32D Satin Stainless Steel finish and the specified CH-BB91 hinge configuration. Its four factory-installed low-voltage conductors transmit compatible power, signaling and monitoring circuits without an external flex loop when the opening is correctly prepared.

Correct wiring: The ETH4W series contains four 26 AWG conductors (4 x 26 gauge). It must not be confused with the ETH4WH heavy-wire configuration, which uses two 18 AWG power conductors plus two 26 AWG signal wires. Always check the connected device's steady-state and inrush current, allowable voltage drop, wire assignment and lead length before selecting an electrified hinge.

Finish and dimension distinction: This is 630 / US32D Satin Stainless Steel, not the 626/US26D satin-chromium-plated steel-base or 693 black versions. The hinge is 4-1/2" x 4-1/2", not the wider 4550 4-1/2" x 5" or taller 5045 5" x 4-1/2" models. The CH-BB91 configuration is specified; verify the actual hinge material, bearing construction, mounting-hole pattern and current Command Access cut sheet for the project.

Key Features and Benefits

• Concealed 4-wire power transfer: Carries four factory-installed 26 AWG conductors through the door hinge from jamb to door leaf, helping avoid visible, exposed wires.
• 4-1/2" x 4-1/2" size: Commercial full-mortise dimensions for matching door/frame hinge preparations; check screw-hole spacing and template before ordering.
• Five-knuckle, standard-weight: The supplier's 5SW identifies a five-knuckle standard-weight hinge, suitable for the installation conditions specified by the manufacturer.
• 630 / US32D Satin Stainless Steel: Architectural stainless-steel finish for commercial doors equipped with matching 630 satin stainless hardware.
• CH-BB91 configuration: Use the specified Command Access hinge chassis rather than substituting a CH-BB79 plated-steel or differently prepared version.
• Protected internal wiring: Integrated conductor pathway supports a clean appearance and protects wiring when installed through the manufacturer's approved jamb and door raceways.
• Low-voltage access control: Supports compatible electrically operated mortise/cylindrical locks, electric exit trim, low-voltage status monitoring and door-mounted accessories when electrically approved.
• Published ETH4W family rating: Manufacturer data gives 1.0 A continuous at 24 VDC for the designated ETH4W conductor arrangement; follow the latest cut sheet for per-pair ratings and system restrictions.
• Professional wire access: Command Access's energy-transfer hinge literature describes a central wire-access opening and non-conductive wire cap; verify the actual assembly configuration.
• Lead options: Manufacturer literature describes optional four-foot leads; verify supplied lead length, number of harness tails, connectors and terminations.
• Commercial hinge family: Published configurations include UL-F and fire-rated door applications. Confirm the specific hinge, door assembly, wiring preparation and fire/egress compliance.
• Manufacturer warranty: Command Access literature advertises a three-year hinge warranty, subject to current manufacturer terms and exclusions.

Product Specifications

Common Commercial Applications

• Electrified mortise and cylindrical locksets that are compatible with 26-gauge wiring
• Appropriately rated electric exit trims and powered door hardware
• Door-mounted proximity readers, low-current indicators and monitoring contacts
• Frame-to-door signaling and door-position status circuits
• Commercial offices, healthcare facilities, schools, institutional and industrial openings
• Replacement projects requiring a specific 4-1/2" x 4-1/2", 630-finish, four-wire full-mortise hinge

ETH4W vs. ETH4WH: Wire Gauge Matters

The ETH4W model contains four 26 AWG wires. An ETH4WH uses a different conductor bundle of two 18 AWG and two 26 AWG wires. Certain electric latch-retraction motors, solenoids and other high-current devices require the heavier power pair or a different manufacturer-approved energy transfer assembly. Check operating/inrush current, wire distances, supply voltage and manufacturer wiring diagrams before substituting one product for another.

Selection and Installation Checklist

1. Match dimensions: Verify 4-1/2" high x 4-1/2" wide, full-mortise five-knuckle standard-weight installation with correct screw-hole pattern.
2. Confirm the finish and configuration: Select 630 / US32D Satin Stainless Steel with CH-BB91; this is not a plated-steel 626 or black 693 hinge.
3. Verify door and frame preparation: Match square-corner hinge mortises, clearances and electrical raceway openings to current Command Access drawings. Confirm exact bearing and hinge gauge from the manufacturer's template.
4. Review electrical requirements: Check that four 26 AWG conductors meet the powered device's continuous/inrush load and signal requirements; calculate allowable voltage drop and select any required power controller.
5. Protect the wire harness: Use approved wire paths and avoid pinching, cutting or twisting wires as the hinge leaves are installed.
6. Test and inspect: Check continuity, complete door swing, lock or exit trim operation and any required fire-door or egress compliance.

What's Included

One Command Access ETH4W4545 630 CH-BB91 4-1/2" x 4-1/2" electrified energy-transfer hinge with 630 Satin Stainless Steel finish and four 26 AWG conductors. Confirm the supplied lead/connector and mounting hardware package when ordering.

Not Included

Electric lockset, electric strike, exit device, reader, controller, power supply, door, frame or additional field wiring. This listing is for the electrified hinge only.

The Command Access Technologies ETH4W4545 626 CH-BB79 Electrified Energy Transfer Hinge provides a concealed wiring path between the hinge jamb and door leaf for commercial access-controlled openings. This product is a 4-1/2" x 4-1/2" full-mortise, five-knuckle, standard-weight hinge with a 626 / US26D Satin Chrome finish on a CH-BB79 steel-base configuration. Four factory-installed electrical conductors carry compatible low-voltage power, control, and monitoring signals through the hinge so the opening does not require an exposed cable loop.

Correct wiring specification: The ETH4W configuration contains four 26 AWG wires (4 x 26-gauge conductors). This model is not the ETH4WH heavy-wire version, which has two 18 AWG power wires plus two 26 AWG signal wires. Check the powered door device's current requirements, inrush demands, wire assignments, run length, and voltage drop before ordering.

Correct finish and construction: This is 626 / US26D Satin Chrome (satin chromium-plated steel), commonly identified by distributor finish code 652 / US26D. The CH-BB79 steel-base version differs from a 630 / US32D satin stainless steel CH-BB91 hinge and from the 693 Black version. A distributor specification identifies this particular 626 CH-BB79 configuration as a plain-bearing full-mortise hinge. Verify the exact factory template and bearing configuration when replacing a previously installed hinge.

Key Features and Benefits

• Concealed four-wire transfer: Four factory-installed 26 AWG conductors provide a protected low-voltage connection between door frame and leaf.
• 4-1/2" x 4-1/2" size: Both height and width are four-and-a-half inches; select matching hinge mortises and manufacturer screw-hole preparation.
• Five-knuckle, standard-weight: Commercial 5SW five-knuckle full-mortise design; verify door size, hinge loading, bearing and template compatibility.
• 626 / US26D Satin Chrome: Satin chromium-plated steel-base finish to coordinate with matching commercial locksets, exit hardware and architectural hinges.
• CH-BB79 steel-base: Correct steel-base product configuration, not the CH-BB91 stainless-steel version or black-finish alternative.
• Square corners: Standard square-corner full-mortise preparation; check the approved manufacturer drawing for the exact screw-hole pattern and required raceway.
• Low-voltage electrical integration: Suitable for properly designed powered locksets, electric exit trim, door monitoring and similar circuits within the manufacturer ratings.
• Published ETH4W family limits: Commonly listed continuous rating is 1 amp at 24 VDC for the designated conductor arrangement; follow the latest factory specifications and connected hardware instructions.
• Protected wire access: Manufacturer family literature describes a centrally located wire opening and non-conductive protective cap to help protect the harness.
• Four-foot lead options: Manufacturer literature lists 4-foot lead availability. Confirm the actual supplied wire lead length, termination and connectors before ordering.
• Professional installation appearance: Eliminates an exposed frame-to-door wiring loop on correctly prepared doors and frames.
• Commercial safety: Confirm fire-rated door hardware approval, access-control regulations, and egress functionality for the complete opening.

Product Specifications

Typical Commercial Applications

• Compatible electrified mortise and cylindrical locksets on single or paired commercial doors
• Approved electric exit trim and low-current access-control hardware
• Door-mounted card readers, low-voltage indicators and controlled-access signaling devices
• Door-position or latch-status monitoring circuits using approved conductor allocation
• Commercial office, institutional, school, hospital and facility-maintenance openings requiring concealed frame-to-door wiring
• Replacement of an exact ETH4W4545 626 CH-BB79 hinge with matching mortise, corner, bearing and electrical specifications

Choosing the Right Wire Harness

The ETH4W hinge has 4 x 26 AWG conductors, whereas ETH4WH uses 2 x 18 AWG + 2 x 26 AWG. Higher-current latch-retraction motors, high-inrush solenoids and some powered locks may require larger power conductors or dedicated power-transfer hardware. Never substitute the ETH4W for a heavier-wire model based only on hinge size or finish. Confirm voltage drop, duty cycle, current limits, control wiring and manufacturer-approved use.

Selection and Installation Checklist

1. Verify the exact size: Confirm 4-1/2" x 4-1/2" dimensions, five-knuckle standard-weight full-mortise design and square-corner door/frame preparations.
2. Match the hardware schedule: Specify 626 / US26D Satin Chrome on CH-BB79 steel base, rather than 630 stainless or 693 black.
3. Check the manufacturer's template: Confirm bearing, hinge thickness, screw-hole placement, wire access openings, frame clearance and installation orientation.
4. Verify electrical load and wiring: Check the required four 26 AWG wires against continuous/inrush loads, distances, voltage drop and the connected device manufacturer's diagram.
5. Route conductors safely: Prepare approved internal door and jamb pathways, protecting the hinge wires from pinching, abrasion and over-tension during movement.
6. Test after fitting: Confirm electrical continuity, full door swing, latch/lock operation, monitoring signals and applicable egress or rated-opening requirements.

What's Included

One Command Access ETH4W4545 626 CH-BB79 4-1/2" x 4-1/2" satin-chrome electrified hinge with four 26 AWG conductors. Verify actual lead length, mounting screws, connector options and other package contents before ordering.

Not Included

Electric lock, exit device, reader, controller, power supply, door, frame, latch-retraction unit or additional field wiring. This listing is for the electrified hinge only.

The Command Access Technologies ETH4W4545 625 CH-BB79 Electrified Energy Transfer Hinge provides a concealed wiring path between the hinge jamb and door leaf for commercial access-controlled openings. This product is a 4-1/2" x 4-1/2" full-mortise, five-knuckle, standard-weight hinge with a 625 / US26 Bright Chrome (Polished Chrome) finish on a CH-BB79 steel-base configuration. Four factory-installed electrical conductors carry compatible low-voltage power, control, and monitoring signals through the hinge so the opening does not require an exposed cable loop.

Correct wiring specification: The ETH4W configuration contains four 26 AWG wires (4 x 26-gauge conductors). This model is not the ETH4WH heavy-wire version, which has two 18 AWG power wires plus two 26 AWG signal wires. Check the powered door device's current requirements, inrush demands, wire assignments, run length, and voltage drop before ordering.

Correct finish and construction: This is 625 / US26 Bright Chrome (Polished Chrome) (bright chromium-plated steel), commonly identified by distributor finish code 651 / US26. The CH-BB79 steel-base version differs from a 630 / US32D satin stainless steel CH-BB91 hinge and from the 693 Black version. The distributor confirms five-knuckle standard-weight construction; verify the exact bearing, hole template and door/frame preparation for this 625 bright-chrome model.

Exact bright-chrome finish: Supplier SKU ETH4W4545-651-5SW is the 625 / US26 Polished (Bright) Chrome hinge with supplier finish code 651 / US26. The reflective bright chromium-plated steel-base appearance is distinct from 626/US26D satin chrome. Dimensions remain 4-1/2" x 4-1/2", five-knuckle standard-weight full mortise, CH-BB79 steel-base, with four 26 AWG conductors. Verify the bearing and the current factory template before substituting it for an existing hinge.

Key Features and Benefits

• Concealed four-wire transfer: Four factory-installed 26 AWG conductors provide a protected low-voltage connection between door frame and leaf.
• 4-1/2" x 4-1/2" size: Both height and width are four-and-a-half inches; select matching hinge mortises and manufacturer screw-hole preparation.
• Five-knuckle, standard-weight: Commercial 5SW five-knuckle full-mortise design; verify door size, hinge loading, bearing and template compatibility.
• 625 / US26 Bright Chrome (Polished Chrome): Bright chromium-plated steel-base finish to coordinate with matching commercial locksets, exit hardware and architectural hinges.
• CH-BB79 steel-base: Correct steel-base product configuration, not the CH-BB91 stainless-steel version or black-finish alternative.
• Square corners: Standard square-corner full-mortise preparation; check the approved manufacturer drawing for the exact screw-hole pattern and required raceway.
• Low-voltage electrical integration: Suitable for properly designed powered locksets, electric exit trim, door monitoring and similar circuits within the manufacturer ratings.
• Published ETH4W family limits: Commonly listed continuous rating is 1 amp at 24 VDC for the designated conductor arrangement; follow the latest factory specifications and connected hardware instructions.
• Protected wire access: Manufacturer family literature describes a centrally located wire opening and non-conductive protective cap to help protect the harness.
• Four-foot lead options: Manufacturer literature lists 4-foot lead availability. Confirm the actual supplied wire lead length, termination and connectors before ordering.
• Professional installation appearance: Eliminates an exposed frame-to-door wiring loop on correctly prepared doors and frames.
• Commercial safety: Confirm fire-rated door hardware approval, access-control regulations, and egress functionality for the complete opening.

Product Specifications

Typical Commercial Applications

• Compatible electrified mortise and cylindrical locksets on single or paired commercial doors
• Approved electric exit trim and low-current access-control hardware
• Door-mounted card readers, low-voltage indicators and controlled-access signaling devices
• Door-position or latch-status monitoring circuits using approved conductor allocation
• Commercial office, institutional, school, hospital and facility-maintenance openings requiring concealed frame-to-door wiring
• Replacement of an exact ETH4W4545 625 CH-BB79 hinge with matching mortise, corner, bearing and electrical specifications

Choosing the Right Wire Harness

The ETH4W hinge has 4 x 26 AWG conductors, whereas ETH4WH uses 2 x 18 AWG + 2 x 26 AWG. Higher-current latch-retraction motors, high-inrush solenoids and some powered locks may require larger power conductors or dedicated power-transfer hardware. Never substitute the ETH4W for a heavier-wire model based only on hinge size or finish. Confirm voltage drop, duty cycle, current limits, control wiring and manufacturer-approved use.

Selection and Installation Checklist

1. Verify the exact size: Confirm 4-1/2" x 4-1/2" dimensions, five-knuckle standard-weight full-mortise design and square-corner door/frame preparations.
2. Match the hardware schedule: Specify 625 / US26 Bright Chrome (Polished Chrome) on CH-BB79 steel base, rather than 630 stainless or 693 black.
3. Check the manufacturer's template: Confirm bearing, hinge thickness, screw-hole placement, wire access openings, frame clearance and installation orientation.
4. Verify electrical load and wiring: Check the required four 26 AWG wires against continuous/inrush loads, distances, voltage drop and the connected device manufacturer's diagram.
5. Route conductors safely: Prepare approved internal door and jamb pathways, protecting the hinge wires from pinching, abrasion and over-tension during movement.
6. Test after fitting: Confirm electrical continuity, full door swing, latch/lock operation, monitoring signals and applicable egress or rated-opening requirements.

What's Included

One Command Access ETH4W4545 625 CH-BB79 4-1/2" x 4-1/2" polished-chrome electrified hinge with four 26 AWG conductors. Verify actual lead length, mounting screws, connector options and other package contents before ordering.

Not Included

Electric lock, exit device, reader, controller, power supply, door, frame, latch-retraction unit or additional field wiring. This listing is for the electrified hinge only.

The Command Access Technologies ETH4W4545 613 CH-BB79 Electrified Energy Transfer Hinge provides a concealed wiring path between the hinge jamb and door leaf for commercial access-controlled openings. This product is a 4-1/2" x 4-1/2" full-mortise, five-knuckle, standard-weight hinge with a 613 / US10B Oil Rubbed Bronze finish on a CH-BB79 steel-base configuration. Four factory-installed electrical conductors carry compatible low-voltage power, control, and monitoring signals through the hinge so the opening does not require an exposed cable loop.

Correct wiring specification: The ETH4W configuration contains four 26 AWG wires (4 x 26-gauge conductors). This model is not the ETH4WH heavy-wire version, which has two 18 AWG power wires plus two 26 AWG signal wires. Check the powered door device's current requirements, inrush demands, wire assignments, run length, and voltage drop before ordering.

Correct finish and construction: This is 613 / US10B Oil Rubbed Bronze (oxidized satin bronze over copper-plated steel), commonly identified by distributor finish code 640 / US10B. The CH-BB79 steel-base version differs from a 630 / US32D satin stainless steel CH-BB91 hinge and from the 693 Black version. The supplier identifies this model as a five-knuckle standard-weight hinge. Confirm bearing type, hinge thickness, and mounting template for this exact finish and chassis before replacement.

613 / US10B oil-rubbed bronze finish: The ETH4W4545 613 CH-BB79 is the oxidized satin bronze over copper-plated, oil-rubbed finish on a steel-base CH-BB79 hinge. It carries supplier finish code 640 / US10B and differs in color from polished brass, satin bronze, and satin chrome variants. The correct supplier SKU is ETH4W4545-640-5SW. This model remains a five-knuckle standard-weight (5SW) 4-1/2" x 4-1/2" full-mortise hinge with 4 x 26 AWG concealed conductors. Match the existing hinge preparation and electrical specifications before ordering.

Key Features and Benefits

• Concealed four-wire transfer: Four factory-installed 26 AWG conductors provide a protected low-voltage connection between door frame and leaf.
• 4-1/2" x 4-1/2" size: Both height and width are four-and-a-half inches; select matching hinge mortises and manufacturer screw-hole preparation.
• Five-knuckle, standard-weight: Commercial 5SW five-knuckle full-mortise design; verify door size, hinge loading, bearing and template compatibility.
• 613 / US10B Oil Rubbed Bronze: Satin chromium-plated steel-base finish to coordinate with matching commercial locksets, exit hardware and architectural hinges.
• CH-BB79 steel-base: Correct steel-base product configuration, not the CH-BB91 stainless-steel version or black-finish alternative.
• Square corners: Standard square-corner full-mortise preparation; check the approved manufacturer drawing for the exact screw-hole pattern and required raceway.
• Low-voltage electrical integration: Suitable for properly designed powered locksets, electric exit trim, door monitoring and similar circuits within the manufacturer ratings.
• Published ETH4W family limits: Commonly listed continuous rating is 1 amp at 24 VDC for the designated conductor arrangement; follow the latest factory specifications and connected hardware instructions.
• Protected wire access: Manufacturer family literature describes a centrally located wire opening and non-conductive protective cap to help protect the harness.
• Four-foot lead options: Manufacturer literature lists 4-foot lead availability. Confirm the actual supplied wire lead length, termination and connectors before ordering.
• Professional installation appearance: Eliminates an exposed frame-to-door wiring loop on correctly prepared doors and frames.
• Commercial safety: Confirm fire-rated door hardware approval, access-control regulations, and egress functionality for the complete opening.

Product Specifications

Typical Commercial Applications

• Compatible electrified mortise and cylindrical locksets on single or paired commercial doors
• Approved electric exit trim and low-current access-control hardware
• Door-mounted card readers, low-voltage indicators and controlled-access signaling devices
• Door-position or latch-status monitoring circuits using approved conductor allocation
• Commercial office, institutional, school, hospital and facility-maintenance openings requiring concealed frame-to-door wiring
• Replacement of an exact ETH4W4545 613 CH-BB79 hinge with matching mortise, corner, bearing and electrical specifications

Choosing the Right Wire Harness

The ETH4W hinge has 4 x 26 AWG conductors, whereas ETH4WH uses 2 x 18 AWG + 2 x 26 AWG. Higher-current latch-retraction motors, high-inrush solenoids and some powered locks may require larger power conductors or dedicated power-transfer hardware. Never substitute the ETH4W for a heavier-wire model based only on hinge size or finish. Confirm voltage drop, duty cycle, current limits, control wiring and manufacturer-approved use.

Selection and Installation Checklist

1. Verify the exact size: Confirm 4-1/2" x 4-1/2" dimensions, five-knuckle standard-weight full-mortise design and square-corner door/frame preparations.
2. Match the hardware schedule: Specify 613 / US10B Oil Rubbed Bronze on CH-BB79 steel base, rather than 630 stainless, 626 satin chrome or 693 black.
3. Check the manufacturer's template: Confirm bearing, hinge thickness, screw-hole placement, wire access openings, frame clearance and installation orientation.
4. Verify electrical load and wiring: Check the required four 26 AWG wires against continuous/inrush loads, distances, voltage drop and the connected device manufacturer's diagram.
5. Route conductors safely: Prepare approved internal door and jamb pathways, protecting the hinge wires from pinching, abrasion and over-tension during movement.
6. Test after fitting: Confirm electrical continuity, full door swing, latch/lock operation, monitoring signals and applicable egress or rated-opening requirements.

What's Included

One Command Access ETH4W4545 613 CH-BB79 4-1/2" x 4-1/2" oil-rubbed bronze electrified hinge with four 26 AWG conductors. Verify actual lead length, mounting screws, connector options and other package contents before ordering.

Not Included

Electric lock, exit device, reader, controller, power supply, door, frame, latch-retraction unit or additional field wiring. This listing is for the electrified hinge only.

The Command Access Technologies ETH4W4545 612 CH-BB79 Electrified Energy Transfer Hinge provides a concealed wiring path between the hinge jamb and door leaf for commercial access-controlled openings. This product is a 4-1/2" x 4-1/2" full-mortise, five-knuckle, standard-weight hinge with a 612 / US10 Satin Bronze finish on a CH-BB79 steel-base configuration. Four factory-installed electrical conductors carry compatible low-voltage power, control, and monitoring signals through the hinge so the opening does not require an exposed cable loop.

Correct wiring specification: The ETH4W configuration contains four 26 AWG wires (4 x 26-gauge conductors). This model is not the ETH4WH heavy-wire version, which has two 18 AWG power wires plus two 26 AWG signal wires. Check the powered door device's current requirements, inrush demands, wire assignments, run length, and voltage drop before ordering.

Correct finish and construction: This is 612 / US10 Satin Bronze (satin bronze plated, clear-coated steel), commonly identified by distributor finish code 639 / US10. The CH-BB79 steel-base version differs from a 630 / US32D satin stainless steel CH-BB91 hinge and from the 693 Black version. The supplier identifies this model as a five-knuckle standard-weight hinge. Confirm bearing type, hinge thickness, and mounting template for this exact finish and chassis before replacement.

612 / US10 Satin Bronze finish: The ETH4W4545 612 CH-BB79 uses a satin bronze plated, clear-coated finish on a CH-BB79 steel-base hinge. This model has the supplier finish code 639 / US10, different from the darker satin bronze finish and the brighter satin brass finish. Supplier SKU: ETH4W4545-639-5SW. It remains a 4-1/2" x 4-1/2" five-knuckle standard-weight (5SW) full-mortise hinge with four 26 AWG concealed conductors. Confirm the hinge bearing, installation preparation and electrical design before ordering.

Key Features and Benefits

• Concealed four-wire transfer: Four factory-installed 26 AWG conductors provide a protected low-voltage connection between door frame and leaf.
• 4-1/2" x 4-1/2" size: Both height and width are four-and-a-half inches; select matching hinge mortises and manufacturer screw-hole preparation.
• Five-knuckle, standard-weight: Commercial 5SW five-knuckle full-mortise design; verify door size, hinge loading, bearing and template compatibility.
• 612 / US10 Satin Bronze: Satin bronze plated steel-base finish with a clear protective coating, coordinated with matching commercial architectural hinges and door hardware; supplier code 639 / US10.
• CH-BB79 steel-base: Correct steel-base product configuration, not the CH-BB91 stainless-steel version or black-finish alternative.
• Square corners: Standard square-corner full-mortise preparation; check the approved manufacturer drawing for the exact screw-hole pattern and required raceway.
• Low-voltage electrical integration: Suitable for properly designed powered locksets, electric exit trim, door monitoring and similar circuits within the manufacturer ratings.
• Published ETH4W family limits: Commonly listed continuous rating is 1 amp at 24 VDC for the designated conductor arrangement; follow the latest factory specifications and connected hardware instructions.
• Protected wire access: Manufacturer family literature describes a centrally located wire opening and non-conductive protective cap to help protect the harness.
• Four-foot lead options: Manufacturer literature lists 4-foot lead availability. Confirm the actual supplied wire lead length, termination and connectors before ordering.
• Professional installation appearance: Eliminates an exposed frame-to-door wiring loop on correctly prepared doors and frames.
• Commercial safety: Confirm fire-rated door hardware approval, access-control regulations, and egress functionality for the complete opening.

Product Specifications

Typical Commercial Applications

• Compatible electrified mortise and cylindrical locksets on single or paired commercial doors
• Approved electric exit trim and low-current access-control hardware
• Door-mounted card readers, low-voltage indicators and controlled-access signaling devices
• Door-position or latch-status monitoring circuits using approved conductor allocation
• Commercial office, institutional, school, hospital and facility-maintenance openings requiring concealed frame-to-door wiring
• Replacement of an exact ETH4W4545 612 CH-BB79 hinge with matching mortise, corner, bearing and electrical specifications

Choosing the Right Wire Harness

The ETH4W hinge has 4 x 26 AWG conductors, whereas ETH4WH uses 2 x 18 AWG + 2 x 26 AWG. Higher-current latch-retraction motors, high-inrush solenoids and some powered locks may require larger power conductors or dedicated power-transfer hardware. Never substitute the ETH4W for a heavier-wire model based only on hinge size or finish. Confirm voltage drop, duty cycle, current limits, control wiring and manufacturer-approved use.

Selection and Installation Checklist

1. Verify the exact size: Confirm 4-1/2" x 4-1/2" dimensions, five-knuckle standard-weight full-mortise design and square-corner door/frame preparations.
2. Match the hardware schedule: Specify 612 / US10 Satin Bronze on CH-BB79 steel base, rather than 613 oil-rubbed bronze, 630 satin stainless, 626 satin chrome or 693 black.
3. Check the manufacturer's template: Confirm bearing, hinge thickness, screw-hole placement, wire access openings, frame clearance and installation orientation.
4. Verify electrical load and wiring: Check the required four 26 AWG wires against continuous/inrush loads, distances, voltage drop and the connected device manufacturer's diagram.
5. Route conductors safely: Prepare approved internal door and jamb pathways, protecting the hinge wires from pinching, abrasion and over-tension during movement.
6. Test after fitting: Confirm electrical continuity, full door swing, latch/lock operation, monitoring signals and applicable egress or rated-opening requirements.

What's Included

One Command Access ETH4W4545 612 CH-BB79 4-1/2" x 4-1/2" satin bronze electrified hinge with four 26 AWG conductors. Verify actual lead length, mounting screws, connector options and other package contents before ordering.

Not Included

Electric lock, exit device, reader, controller, power supply, door, frame, latch-retraction unit or additional field wiring. This listing is for the electrified hinge only.