- Manufacturer and part number on the existing component
- Door or operator model, plus size and finish where applicable
- Mounting style, handedness, and electrical specifications when relevant
Command Access 4-Wire Heavy Power Transfer Hinge | 4-1/2 x 4-1/2
Replacement part details
The part number updates with your selected option. Confirm the size, finish, and configuration before ordering.
Check the specifications below for compatibility, then confirm your original part number and equipment details before ordering. Contact our parts team if you need help.
Command Access 4-Wire Heavy Power Transfer Hinge | 4-1/2 x 4-1/2
Command Access 4-Wire Heavy Power Transfer Hinge | 4-1/2 x 4-1/2
$239.00
$167.30
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Quick Technical Selection Guide
The Command Access 4-Wire Heavy Power Transfer Hinge | 4-1/2 x 4-1/2 is designed to carry compatible low-voltage circuits through the hinge side of an electrified commercial door, keeping the wiring pathway within the prepared door and frame instead of using an exposed surface cord. This model family provides 4 conductors, with selectable factory finishes or preparations shown below. Select by electrical harness, hinge size and mechanical preparation—not by finish alone.
Detailed Hinge Selection and Field Verification
The model number identifies the electrified hinge size, wire arrangement and factory finish. The option menu contains the following distinct factory models:
- ETH4WH4545 630 CH-BB91 — 630 CH-BB91
- ETH4WH4545 626 CH-BB79 — 626 CH-BB79
Physical Fit and Finish
- Hinge template: Verify door and frame mortise, leaf dimensions, thickness, centerline, hinge spacing, screw locations, knuckle pattern and corner preparation before selecting the part. Exact hinge geometry must match the opening even when the visible finish is similar.
- Finish selection: Match the finish code and metal construction to the approved hardware schedule. Do not substitute 626, 613, 612, 630 or other finishes without confirming project requirements.
- Heavy-weight hinge: Confirm that the heavy-weight assembly meets the door mass, usage and hinge scheduling requirements; it should not be assumed interchangeable with the standard-weight transfer hinge.
- Power and signal wiring: This WH-coded family uses a mixed-gauge conductor arrangement. Match each power and monitoring circuit to the manufacturer's wiring diagram rather than using conductor count alone.
Electrical System and Commissioning
Determine the connected device's operating voltage, peak current and any monitoring signals; confirm the selected hinge's wire gauges, manufacturer ratings, termination method and available conductor count. Route wiring without sharp edges, pinching or strain through the door swing. After mounting, verify door clearance, continuity, electrical actuation, monitoring signals and relatching under normal operation.
Supplied scope: One selected Command Access transfer hinge assembly as identified by the ordered SKU. Locking devices, access controller, external power supply, extended field wiring and labor are not part of this hinge-only listing.
Project Specification and Installer Checkpoints
For the 4-1/2 x 4-1/2 4-wire electrified transfer hinge, confirm both the mechanical hinge specification and the electrical circuit layout before selecting a finish. A power-transfer hinge is not interchangeable with a standard butt hinge merely because the leaf dimensions match.
Electrical Design
- Factory conductor configuration: 2 × 18 AWG power conductors + 2 × 26 AWG signal/control conductors. Confirm the wiring arrangement of the exact selected SKU against the current product sheet.
- Connected hardware: Identify the electric lock, latch-retraction hardware, door-position switch or monitoring contacts that the cable serves, and map each conductor to a circuit before installation. Reserve conductor capacity for required power and signals.
- Power sizing: Check total running and inrush current, voltage at the device under load, allowable conductor ampacity and maximum cable length using the electrical device and hinge manufacturers' specifications. Do not assume a particular amperage rating from conductor count alone.
- Termination and movement: Plan protected cable routing through prepared door and frame raceways, proper strain relief and termination access. Verify continuity and insulation integrity with the door fully open and closed.
Mechanical Fit and Ordering Requirements
- Hinge template: Verify leaf height and width, hinge thickness, five-knuckle pattern, screw-hole locations, corner style and door/frame mortise; compare the selected part number to the architectural hardware schedule.
- Door construction: Confirm door weight, hinge quantity, opening frequency, intended fire-door listing and any applicable frame reinforcement or manufacturer restrictions. Do not substitute a different hinge load class solely based on appearance.
- Series distinction: The WH-coded configuration may have a different electrical harness and/or hinge specification from the W-coded family. Check both before substitution.
Commercial Applications and Supplied Scope
For commercial entrance, corridor and other access-controlled openings that require concealed low-voltage transfer from the frame to electrified door hardware. Select the precise factory configuration in the variant menu. This is a power-transfer hinge assembly; the mating lockset, power supply, access controller, door wiring and field installation are separate unless an individual manufacturer package expressly states otherwise.
Core Specifications
| Manufacturer | Command Access Technologies |
|---|---|
| Application | Concealed electrical transfer between a commercial door frame and door leaf |
| Nominal hinge size | 4-1/2 x 4-1/2 inches (confirm selected SKU and template) |
| Electrical arrangement | 2 × 18 AWG power conductors + 2 × 26 AWG signal/control conductors |
| Harness purpose | Mixed-gauge power and control |
| Hinge construction | Commercial full-mortise, five-knuckle hinge construction; confirm mechanical grade and material for each SKU |
| Finish / version selection | Choose an exact configuration below; electrical features and preparations can differ |
Available Variants and Part Numbers
| Selected configuration | Manufacturer SKU |
|---|---|
| 630 CH-BB91 | ETH4WH4545 630 CH-BB91 |
| 626 CH-BB79 | ETH4WH4545 626 CH-BB79 |
Choosing the Correct Hinge
- Match the opening: Confirm height, open width, hinge thickness, corner radius, hole pattern and door/frame mortise against the existing hinge or new construction schedule.
- Size the circuit: Calculate the connected lock/trim device's operating and inrush current, voltage drop, required conductors and control contacts. Use the current Command Access electrical ratings for the selected SKU.
- Check the power transfer: Route the factory wiring through the designated hinge and approved door/frame raceways without pinching or stressing the leads through the full swing cycle.
- Coordinate door hardware: Verify electric locks, readers, monitor switches, exit trim, power supply and access controller are electrically compatible before installation.
- Inspect and test: Verify conductor continuity, insulation, mechanical door movement and powered hardware operation after installation. Follow applicable fire-door and egress requirements.
Important model distinction: ETH4WH describes a heavier electrical power pair, not necessarily a mechanically heavy-weight hinge. Compare it with the all-26-AWG ETH4W series.
Order and Package Notes
This listing is for the selected electrified hinge configuration. The complete power supply, electrified lock or exit device, reader/controller, additional hinges, special mounting hardware and field installation materials are not automatically included. Verify the manufacturer's current packaging and any required factory harness or connector details before ordering.
Concealed four-conductor power transfer for commercial doors requiring a mixed-gauge harness: two 18 AWG power wires and two 26 AWG control wires. Choose the exact material and finish shown for each model.
Models and specifications
- 630 CH-BB91: ETH4WH4545 630 CH-BB91
- 626 CH-BB79: ETH4WH4545 626 CH-BB79
630 CH-BB91 — ETH4WH4545 630 CH-BB91
The Command Access Technologies ETH4WH4545 630 CH-BB91 Electrified Energy Transfer Hinge is a concealed heavy-wire power-transfer hinge for commercial doors equipped with compatible electrically operated hardware. This 4-1/2" x 4-1/2", five-knuckle, standard-weight full-mortise hinge features 630 / US32D Satin Stainless Steel and the CH-BB91 stainless-steel hinge configuration. The electrical harness transfers low-voltage power and control signals from the hinge jamb into the moving door leaf without an exposed surface-mounted cord loop.
Important wiring distinction: The ETH4WH is a four-conductor heavy-wire hinge with two 18 AWG power conductors and two 26 AWG signal/control conductors (2 x 18 AWG + 2 x 26 AWG). It is not the ETH4W model, which uses four 26 AWG conductors. The heavier power pair makes the ETH4WH useful for properly rated higher-current door hardware, but system compatibility still requires evaluation of continuous and inrush current, voltage drop, lead length and wiring instructions.
Key Features
- Concealed power and signal transfer: Carries low-voltage wiring from the frame into the door through a factory-wired commercial butt hinge.
- Four-wire, mixed-gauge harness: Two 18 AWG conductors for compatible power circuits plus two 26 AWG conductors for approved signaling or monitoring.
- Heavy-wire ETH4WH design: Differentiated from the all-26-gauge ETH4W model when a powered device needs a larger conductor pair.
- 4-1/2" high x 4-1/2" wide: Common commercial full-mortise hinge size; match the actual frame and door preparation and manufacturer's template before ordering.
- Five-knuckle, standard-weight hinge: Commercial 5-knuckle hinge format with the manufacturer-specified hinge and hole pattern. Verify the exact corner style and screw spacing against the supplied part template.
- 630 / US32D Satin Stainless Steel: Stainless-steel appearance designed to coordinate with matching 630-finish commercial door hardware and stainless steel architectural hinge schedules.
- CH-BB91 version: Manufacturer configuration identifies the stainless-steel-base hinge family. Check the bearing arrangement and approved template for the exact supplied assembly.
- Reduced exposed wiring: Concealed route helps protect conductors at the hinge edge and provides a clean appearance on access-controlled openings.
- Manufacturer family options: Command Access documentation describes a protected, center-located wire access opening, non-conductive wire cap and optional lead configurations. Confirm what is supplied with this specific part.
- Commercial application: May be used with compatible electrified locksets, electric exit trim, selected latch-retraction devices, door-mounted status circuits and other properly rated security hardware.
- Fire-door and egress coordination: Select the exact hinge and wiring design according to the door assembly's listing, the current manufacturer documentation and applicable egress requirements.
Product Specifications
| Manufacturer | Command Access Technologies |
|---|---|
| Manufacturer Part Number | ETH4WH4545 630 CH-BB91 |
| Shopify SKU | ETH4WH4545 630 CH-BB91 |
| Product Type | Heavy-wire electrified power-transfer / energy-transfer hinge |
| Series | ETH4WH |
| Hinge Height | 4-1/2" |
| Hinge Width | 4-1/2" |
| Design | Five knuckles; full mortise; standard weight |
| Base / Chassis | CH-BB91 stainless-steel hinge configuration |
| Finish | 630 / US32D Satin Stainless Steel |
| Conductor Count | 4 |
| Power Conductors | 2 x 18 AWG |
| Signal / Control Conductors | 2 x 26 AWG |
| Function | Concealed transfer of low-voltage electrical power and control/monitoring signals |
| Electrical Compatibility | Verify current, voltage, inrush, voltage drop and wire assignment with device manufacturer's instructions |
| Door Preparation | 4-1/2" x 4-1/2" full-mortise; verify corners and screw template for exact part |
| Handing | Verify current manufacturer mounting template for installation orientation |
| Lead Length / Termination | Confirm exact supplied lead length and connectors; manufacturer family offers lead options |
| Quantity | One wired energy-transfer hinge |
| Estimated Shipping Weight | 3 lb packaged weight (shipping estimate) |
Common Commercial Applications
- Compatible electrically operated mortise or cylindrical locksets
- Access-controlled openings using approved electric exit trim or motorized latch-retraction hardware
- Door-mounted monitoring, position indicators and approved signaling circuits
- Institutional, commercial and facility-maintenance door hardware installations requiring concealed frame-to-door wiring
- Replacement of a matching ETH4WH4545 hinge on correctly prepared commercial doors
ETH4WH versus ETH4W and ETH6WH
Choose by both wire count and gauge, not just hinge dimensions. ETH4WH: 2 x 18 AWG + 2 x 26 AWG for a power pair and two additional conductors. ETH4W: 4 x 26 AWG, without the 18 AWG power pair. ETH6WH: 2 x 18 AWG + 4 x 28 AWG, with a different count and gauge of control conductors. These are distinct electrical configurations and are not drop-in wiring substitutes. Confirm the powered device's approved wire and current requirements before installation.
Ordering and Installation Checklist
- Confirm the opening: Verify 4-1/2" height x 4-1/2" width and the exact frame/door hinge mortises. Match screw-hole pattern, edge clearances and corner preparation to the Command Access installation template.
- Confirm the material and finish: This is 630 / US32D Satin Stainless Steel and the CH-BB91 configuration; it is not the steel-base 626/US26D satin-chrome model.
- Confirm electrical requirements: Plan for two 18 AWG power wires and two 26 AWG signal wires. Check load, surge current, voltage drop, connected-device wiring and any required power-control modules.
- Use approved wire paths: Route wiring within properly prepared door and frame raceways using the manufacturer cut sheet. Do not pinch or abrade conductors behind the hinge leaves.
- Inspect final operation: Test full door swing, wiring continuity, lock or exit-device operation, status circuits and all applicable egress and rated-opening conditions.
Included
One Command Access ETH4WH4545 630 CH-BB91 4-1/2" x 4-1/2" satin stainless steel energy-transfer hinge with the integrated four-wire harness (2 x 18 AWG + 2 x 26 AWG). Confirm mounting hardware, factory leads, connector and template package with the supplier prior to ordering.
Not Included
Electric lockset, exit device, access-control panel, door or frame, power supply, separate controller, relay electronics and additional field wiring. This listing is for the electrified hinge only.
626 CH-BB79 — ETH4WH4545 626 CH-BB79
The Command Access Technologies ETH4WH4545 626 CH-BB79 Electrified Energy Transfer Hinge is a concealed heavy-wire power-transfer hinge for commercial doors equipped with compatible electrically operated hardware. This 4-1/2" x 4-1/2", five-knuckle, standard-weight full-mortise hinge features 626 / US26D Satin Chrome and the CH-BB79 steel-base hinge configuration. The electrical harness transfers low-voltage power and control signals from the hinge jamb into the moving door leaf without an exposed surface-mounted cord loop.
Important wiring distinction: The ETH4WH is a four-conductor heavy-wire hinge with two 18 AWG power conductors and two 26 AWG signal/control conductors (2 x 18 AWG + 2 x 26 AWG). It is not the ETH4W model, which uses four 26 AWG conductors. The heavier power pair makes the ETH4WH useful for properly rated higher-current door hardware, but system compatibility still requires evaluation of continuous and inrush current, voltage drop, lead length and wiring instructions.
Exact finish and construction: Model ETH4WH4545 626 CH-BB79 is the 4-1/2" x 4-1/2" square-corner steel-base CH-BB79 standard-weight hinge with a 626 / US26D Satin Chrome finish. It uses four wires: 2 x 18 AWG for appropriate power circuits plus 2 x 26 AWG for lower-current signaling/control. It is distinct from the 630 satin stainless-steel CH-BB91 configuration and all-26-AWG ETH4W models. Verify hinge template and electrical suitability against the opening and connected hardware before ordering.
Key Features
- Concealed power and signal transfer: Carries low-voltage wiring from the frame into the door through a factory-wired commercial butt hinge.
- Four-wire, mixed-gauge harness: Two 18 AWG conductors for compatible power circuits plus two 26 AWG conductors for approved signaling or monitoring.
- Heavy-wire ETH4WH design: Differentiated from the all-26-gauge ETH4W model when a powered device needs a larger conductor pair.
- 4-1/2" high x 4-1/2" wide: Common commercial full-mortise hinge size; match the actual frame and door preparation and manufacturer's template before ordering.
- Five-knuckle, standard-weight hinge: Commercial 5-knuckle hinge format with the manufacturer-specified hinge and hole pattern. Verify the exact corner style and screw spacing against the supplied part template.
- 626 / US26D Satin Chrome: A satin chromium-plated steel-base hinge finish that coordinates with matching 626/US26D commercial door hardware.
- CH-BB79 version: Manufacturer configuration identifies the plated-steel-base hinge family. Check the bearing arrangement and approved template for the exact supplied assembly.
- Reduced exposed wiring: Concealed route helps protect conductors at the hinge edge and provides a clean appearance on access-controlled openings.
- Manufacturer family options: Command Access documentation describes a protected, center-located wire access opening, non-conductive wire cap and optional lead configurations. Confirm what is supplied with this specific part.
- Commercial application: May be used with compatible electrified locksets, electric exit trim, selected latch-retraction devices, door-mounted status circuits and other properly rated security hardware.
- Fire-door and egress coordination: Select the exact hinge and wiring design according to the door assembly's listing, the current manufacturer documentation and applicable egress requirements.
Product Specifications
| Manufacturer | Command Access Technologies |
|---|---|
| Manufacturer Part Number | ETH4WH4545 626 CH-BB79 |
| Shopify SKU | ETH4WH4545 626 CH-BB79 |
| Product Type | Heavy-wire electrified power-transfer / energy-transfer hinge |
| Series | ETH4WH |
| Hinge Height | 4-1/2" |
| Hinge Width | 4-1/2" |
| Design | Five knuckles; full mortise; standard weight |
| Base / Chassis | CH-BB79 steel-base hinge configuration |
| Finish | 626 / US26D Satin Chrome |
| Conductor Count | 4 |
| Power Conductors | 2 x 18 AWG |
| Signal / Control Conductors | 2 x 26 AWG |
| Function | Concealed transfer of low-voltage electrical power and control/monitoring signals |
| Electrical Compatibility | Verify current, voltage, inrush, voltage drop and wire assignment with device manufacturer's instructions |
| Door Preparation | 4-1/2" x 4-1/2" full-mortise; verify corners and screw template for exact part |
| Handing | Verify current manufacturer mounting template for installation orientation |
| Lead Length / Termination | Confirm exact supplied lead length and connectors; manufacturer family offers lead options |
| Quantity | One wired energy-transfer hinge |
| Estimated Shipping Weight | 3 lb packaged weight (shipping estimate) |
Common Commercial Applications
- Compatible electrically operated mortise or cylindrical locksets
- Access-controlled openings using approved electric exit trim or motorized latch-retraction hardware
- Door-mounted monitoring, position indicators and approved signaling circuits
- Institutional, commercial and facility-maintenance door hardware installations requiring concealed frame-to-door wiring
- Replacement of a matching ETH4WH4545 hinge on correctly prepared commercial doors
ETH4WH versus ETH4W and ETH6WH
Choose by both wire count and gauge, not just hinge dimensions. ETH4WH: 2 x 18 AWG + 2 x 26 AWG for a power pair and two additional conductors. ETH4W: 4 x 26 AWG, without the 18 AWG power pair. ETH6WH: 2 x 18 AWG + 4 x 28 AWG, with a different count and gauge of control conductors. These are distinct electrical configurations and are not drop-in wiring substitutes. Confirm the powered device's approved wire and current requirements before installation.
Ordering and Installation Checklist
- Confirm the opening: Verify 4-1/2" height x 4-1/2" width and the exact frame/door hinge mortises. Match screw-hole pattern, edge clearances and corner preparation to the Command Access installation template.
- Confirm the material and finish: This is 626 / US26D Satin Chrome and the CH-BB79 configuration; it is not the steel-base 626/US26D satin-chrome model.
- Confirm electrical requirements: Plan for two 18 AWG power wires and two 26 AWG signal wires. Check load, surge current, voltage drop, connected-device wiring and any required power-control modules.
- Use approved wire paths: Route wiring within properly prepared door and frame raceways using the manufacturer cut sheet. Do not pinch or abrade conductors behind the hinge leaves.
- Inspect final operation: Test full door swing, wiring continuity, lock or exit-device operation, status circuits and all applicable egress and rated-opening conditions.
Included
One Command Access ETH4WH4545 626 CH-BB79 4-1/2" x 4-1/2" satin chrome-plated steel-base energy-transfer hinge with the integrated four-wire harness (2 x 18 AWG + 2 x 26 AWG). Confirm mounting hardware, factory leads, connector and template package with the supplier prior to ordering.
Not Included
Electric lockset, exit device, access-control panel, door or frame, power supply, separate controller, relay electronics and additional field wiring. This listing is for the electrified hinge only.
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