4-1/2" x 4-1/2" Electrified Commercial Hinge | 4-Wire Concealed Power Transfer | NRP | US32D

Combine commercial-duty hinge performance, enhanced security, and concealed electrical power transfer with the Vector Hinge Co. 4.5" Ball Bearing NRP ETW4 Hinge.

This 4-1/2" x 4-1/2" commercial ball-bearing hinge features an integrated ETW4 4-conductor through-wire system, allowing low-voltage wiring to pass discreetly from the frame into the door for compatible electrified locking and access-control hardware.

The Non-Removable Pin (NRP) adds security on out-swinging and exposed-hinge applications, while the ball-bearing design provides smooth operation for frequently used commercial doors.

Key Features

• Vector Hinge Co. commercial electrified hinge

• 4-1/2" x 4-1/2" size

• Heavy-duty ball-bearing construction

• NRP – Non-Removable Pin

• Integrated ETW4 concealed through-wire system

• 4 electrical conductors

• Transfers wiring from frame to door

• Helps eliminate exposed armored door loops

• Designed for compatible electrified door hardware

• Ideal for access-controlled openings

• Suitable for high-traffic commercial applications

• US32D Satin Stainless Steel finish

• Ideal for new construction, replacement, and retrofit applications

ETW4 Concealed Power Transfer

The integrated ETW4 system provides four conductors through the hinge, creating a concealed electrical pathway between the stationary frame and moving door.

This allows compatible door-mounted electrical hardware to receive power or signaling while keeping wiring hidden within the opening.

Benefits include:

• Cleaner installation

• No exposed wire loop at the hinge edge

• Reduced exposure of wiring to physical damage

• Professional architectural appearance

• Integrated hinge and power-transfer function

Common Electrified Applications

The ETW4 hinge can be used with properly matched door-mounted equipment such as:

• Electrified mortise locks

• Electrified cylindrical locks

• Electrified exit-device trim

• Motorized latch-retraction devices

• Request-to-exit devices

• Door-position or monitoring components

• Other compatible low-voltage door hardware

Always verify the electrical requirements of the connected hardware before installation.

Four-Conductor Configuration

ETW4 = 4 Conductors

Four conductors may be suitable for many basic electrified locking applications, but the number of wires required depends on the complete access-control system.

Before ordering, verify:

• Required conductor count

• Voltage

• Current draw

• Wire-gauge requirements

• Lock or exit-device specifications

• Monitoring requirements

• Power-supply specifications

Applications requiring additional circuits may require a different electrified hinge configuration.

Ball Bearing Construction

Ball bearings help reduce friction between the hinge knuckles as the door opens and closes.

Benefits include:

• Smooth door operation

• Reduced hinge wear

• Improved performance in high-cycle applications

• Quieter movement

• Longer service life in demanding commercial openings

NRP – Non-Removable Pin

The Non-Removable Pin helps prevent removal of the hinge pin while the door is closed.

This is especially valuable on:

• Out-swinging exterior doors

• Secure entrances

• Access-controlled doors

• Service entrances

• Utility rooms

• Restricted areas

• Other security-sensitive openings

NRP provides an additional layer of physical security when the hinge barrel is accessible from the unsecured side.

US32D Satin Stainless Steel

The current Vector ETW4 configuration is offered in:

US32D – Satin Stainless Steel

US32D provides a clean commercial appearance while coordinating with common stainless architectural hardware.

It is well suited for:

• Commercial entrances

• Healthcare facilities

• Schools

• Government buildings

• Institutional facilities

• High-traffic openings

• Exterior commercial applications

Product Specifications

Brand: Vector Hinge Co.
Product Type: Electrified Ball Bearing Butt Hinge
Size: 4-1/2" x 4-1/2"
Bearing Type: Ball Bearing
Pin Type: Non-Removable Pin / NRP
Electrical Transfer: ETW4
Conductors: 4
Finish: US32D Satin Stainless Steel
SKU: BB-BH4545-NRP-US32D-ETW4
Application: Commercial Electrified Door Hardware
Use: New Installation / Replacement / Retrofit

Common Applications

Ideal for:

• Access-controlled commercial doors

• Hollow metal doors

• Commercial wood doors

• Secure entrances

• Exterior doors

• Office buildings

• Schools and universities

• Hospitals

• Healthcare facilities

• Government buildings

• Warehouses

• Institutional facilities

• High-traffic commercial openings

Why Use an Electrified Hinge?

A through-wire hinge combines two important door functions into one component:

Mechanical Support + Electrical Power Transfer

This allows the hinge to support normal door operation while transferring low-voltage wiring into the door.

Compared with an exposed door loop, an electrified hinge provides a cleaner and more concealed installation.

Replacement Applications

Use this hinge when:

• An existing ETW4 hinge is damaged

• Ball bearings are worn

• Existing power-transfer wiring has failed

• An electrified lock is being added

• An access-control opening is being upgraded

• An existing hinge is being converted to NRP

• Concealed wiring is preferred over an exposed door loop

Important Compatibility Note

Before ordering, verify:

• 4-1/2" x 4-1/2" hinge size

• Existing hinge preparation

• Screw-hole pattern

• Door thickness

• Door weight

• Number of hinges required

• Required conductor count

• Voltage and amperage requirements

• Connected electrified hardware

• NRP requirement

• US32D finish requirement

Do not select an electrified hinge based only on physical hinge dimensions. The electrical requirements must also match the connected door hardware.

Installation Notes

Proper installation requires coordination between the mechanical door hardware and access-control wiring.

Pay particular attention to:

• Door and frame alignment

• Wire routing

• Wire protection

• Connection points

• Voltage

• Current draw

• Power-supply capacity

• Door handing

• Access-control system requirements

Avoid pinching, twisting, or placing excessive tension on the through-wire conductors during installation.

What's Included

(1) Vector Hinge Co. 4.5" x 4.5" Ball Bearing NRP ETW4 Hinge