What This Guide Covers and Who It Helps
If you are specifying or installing a door-mounted access control device that communicates over a network rather than through a simple hardwired signal, you have a wiring problem that a standard electric hinge cannot solve on its own. This guide explains what a Power over Ethernet (PoE) electric hinge is, when it is the right tool, how it differs from a conventional electrified hinge, and what companion components you need to complete the opening correctly. It is written for security integrators, low-voltage contractors, architects specifying intelligent access control, and facility managers in healthcare, education, and commercial office environments.
What Is a PoE Electric Hinge?
A Power over Ethernet (PoE) electric hinge is a full-mortise butt hinge modified to carry both electrical power and Ethernet data simultaneously through the door opening. Where a standard electric hinge transfers low-voltage power for an electrified lock or electric strike, a PoE hinge adds a structured data pathway, typically two twisted pairs for data and additional conductors for power, all concealed within the hinge barrel and routed through the door and frame without exposed wiring or a door cord.
The data transfer is bidirectional: the hinge passes network communication from the building infrastructure to the door-mounted device and back again, enabling real-time credential validation, event logging, and remote management from a network operations or security management platform.
When a PoE Hinge Is the Right Choice
Not every electrified opening needs PoE capability. The need arises specifically when the hardware mounted on the door is a network-connected intelligent device that cannot operate on simple on/off power alone. Typical triggers include:
- Door-mounted card readers or credential devices that communicate back to a server over IP
- Access control locksets or readers in the IN220-class product category that are designed for Ethernet-based communication
- Openings where a door cord or electrified power transfer (EPT) device would be mechanically impractical or aesthetically unacceptable
- Retrofit projects on heavy-traffic doors where exposed wiring is a vandalism or tamper risk
In schools, a PoE hinge is increasingly common on classroom security doors where an IP-connected reader handles both lockdown commands and daily credential traffic. In healthcare, it appears on controlled-access pharmacy doors and secure patient care corridors where network-verified access is required. In corporate and government facilities, it supports networked access points on any door that is part of a managed security topology.
If your door hardware runs on a simple hardwired circuit with no network communication requirement, a standard electrified hinge with the appropriate circuit count is sufficient and less expensive. Specify PoE only when the device on the door actually demands it.
Heavy Weight vs. Standard Weight: Sizing the Hinge Body First
Before you think about the electrical modification, you still need to size the hinge correctly for the opening. The PoE modification does not change the structural requirements.
- Standard weight hinges (roughly .134 gauge) are appropriate for most interior commercial doors up to approximately 200 pounds.
- Heavy weight hinges (roughly .180 gauge) are required for doors in the 201 to 400 pound range, high-frequency openings, and doors with closers that place sustained lateral stress on the hinge set.
The 4-1/2 x 4-1/2 inch size is the most common commercial specification and covers the majority of standard hollow metal door and frame combinations. If the door exceeds 400 pounds, or is unusually wide, step up to a 5 x 4-1/2 or 5 x 5 configuration. Match your hinge size to the door weight table and always verify against the door manufacturer's hinge reinforcement before finalizing.
Heavy weight PoE hinges are available from McKinney in the T4A3786 product family for 4-1/2 x 4-1/2 openings. If your project calls for a heavier opening or a different size, verify the PoE-capable catalog configurations before committing to a door prep.
Installation Position: The PoE Hinge Does Not Go in the Middle
This is one of the most common field errors on PoE hinge projects. Unlike a standard QC electrified hinge, which is typically installed at the center hinge position, the PoE hinge must be installed at the second from bottom hinge position on the door. This is a fixed requirement driven by the harness routing and the physical location of the network termination on the frame side.
Installing the PoE hinge in the wrong position will result in harnesses that are the wrong length, improper strain relief, and potential data transmission problems. Review the installation documentation before the door is prepped and confirm the hinge location with the integrator before the frame is ordered.
Harnesses Are a Separate Line Item
The PoE hinge body does not ship with wiring harnesses included. You must order matched door-side and frame-side harnesses separately and select the correct harness length based on door width. Harness connectors are sized to pass through a standard 3/8-inch minimum stile-to-stile door raceway.
Door-side harness length is determined by door width and hinge count. A 32 to 36-inch wide door with three hinges, for example, requires a 42-inch door-side harness. The frame-side harness runs from the hinge location up the jamb to the wall or ceiling termination and is typically ordered at 180 inches to provide adequate routing length.
Failure to order the correct harness pair at the same time as the hinge is one of the leading causes of project delays on electrified door openings. Add harnesses to the hardware schedule as a required companion item, not an afterthought.
Electrical Specs and Division Coordination
PoE hinges in the McKinney ElectroLynx family are rated at 350 mA continuous at 48 volts DC nominal. The wire bundle inside the hinge includes two twisted pairs (26 AWG) for data, four straight conductors (28 gauge) for power, and one 24 AWG conductor for earth ground, totaling nine multistrand conductors with two 6-position and two 4-position Molex connectors.
Two wiring configurations are available depending on how the network switch delivers power:
- Power over Data (5-wire): Power and data travel together over the two twisted pairs, with the 24 AWG conductor used for earth ground.
- Data with Power over Spares (9-wire): Data runs over two twisted pairs; power runs over the four spare straight conductors; earth ground on the 24 AWG conductor.
Coordinate PoE hinge installations with Division 26 (electrical) and Division 28 (electronic safety and security) on the project specification. The network switch port, power budget, conduit routing, and fire alarm interface must all be resolved before the door is installed. Specifying the hinge in Division 08 without a corresponding note in Division 28 is a frequent source of RFIs and field delays.
Fire-Rated Openings and Listing Compliance
Electric hinges used on fire-rated door assemblies must be listed for that application. Confirm that the PoE-capable hinge you select carries the appropriate UL listing for the fire rating on your opening. The presence of the electrical modification does not automatically disqualify a hinge from fire door use, but the specific model must be verified against the listing. Do not assume all PoE hinges are fire-rated; check the product listing documentation for your project jurisdiction.
Specifying a PoE Hinge: A Pre-Order Checklist
- Confirm the door-mounted device actually requires Ethernet data transfer, not just low-voltage power
- Select hinge size based on door weight (standard weight vs. heavy weight)
- Confirm the 4-1/2 x 4-1/2 size matches the door and frame prep, or size up as needed
- Verify the opening is fire-rated and confirm the selected hinge carries the correct listing if so
- Place the PoE hinge at the second from bottom position on the door schedule
- Order door-side harness matched to door width and hinge count
- Order frame-side harness (typically 180 inches) as a separate line item
- Coordinate network switch PoE port, power budget, and wiring configuration (5-wire vs. 9-wire) with Division 28 and the security integrator
- Add Division 26 and Division 28 coordination notes to the spec section
Sourcing PoE Hinges and Companion Hardware
DoorwaysPlus.com carries heavy weight electrified hinges, standard electrified hinges, and power transfer devices across a range of configurations. If your project involves network-connected access control on a swinging door and you want to verify hinge sizing, harness compatibility, or fire-rating status before you order, the team at DoorwaysPlus can help you work through the schedule before anything ships.