OMRON CONNECTING SOCKET PTF-14A PTF14A

Omron PTF-14A | 4-Pole Relay Socket — 14-Pin / DIN Rail + Panel Mount / For Omron LY Series

Purpose-Built for the Omron LY4 — Relay and Socket Together

The PTF-14A is Omron's 14-pin DIN rail relay socket for the LY4 4-pole relay series. It handles the mechanical and electrical interface between the relay and the panel — the relay plugs in from the front, field wiring connects to the socket's screw terminals, and the relay can be replaced without disturbing any wiring.

The socket mounts on a standard 35mm DIN rail and can also be panel-mounted directly. This makes it compatible with both modern DIN rail-based panel builds and older panel designs where components are screwed directly to a backplate.

The finger-protection terminal design encloses the screw terminal area to reduce the risk of accidental contact with live terminals during relay installation, inspection, or replacement. The relay inserts and locks into the socket body; the retaining clip or socket catch holds it against vibration.

Key Specifications

DIN Rail vs Panel Mount — Same Socket, Two Options

The PTF-14A snaps onto a standard 35mm × 7.5mm DIN rail without tools. For panel mount, the socket includes panel mounting holes — screws the socket directly to a flat mounting surface. Both mounting methods use the same socket body and provide the same terminal access.

This dual mounting capability matters in panels where DIN rail space is limited or where specific relay positions are dictated by the panel layout rather than rail availability.

Relay Installation and Replacement

The LY4 relay inserts into the PTF-14A socket from the front. Alignment pins prevent incorrect orientation. The retention mechanism holds the relay against vibration. To replace the relay, release the retention clip, pull the relay straight out, and insert the replacement — field wiring on the socket is unaffected throughout.

This replacement procedure without wiring disturbance is the primary maintenance advantage of socket-and-relay architecture over direct-wired relays in machine panels.

FAQ

Q1: Which relay types are compatible with the PTF-14A?

The PTF-14A is designed for the Omron LY4 4-pole relay (14-pin). The LY4 series is available in various coil voltages (12VDC, 24VDC, 48VDC, 100–110VDC, 110/120VAC, 220/240VAC). The socket accepts any LY4 variant regardless of coil voltage — the wiring to the socket's power terminals determines the coil supply.

Q2: Can the PTF-14A be used with Omron LY2 relays?

No. The LY2 is an 8-pin 2-pole relay requiring an 8-pin socket (PYF08A or similar). The PTF-14A is a 14-pin socket for 4-pole LY4 relays. The two socket types are physically different and are not interchangeable.

Q3: Does the PTF-14A include the DIN rail clip?

The PTF-14A is designed for direct 35mm DIN rail mounting with a built-in snap-fit clip. No separate DIN rail adapter is needed. For panel mounting, the socket body includes panel-mount screw holes as standard. Both mounting methods are available without accessories.

Q4: How are field wires connected to the PTF-14A?

Field wires connect to the screw terminals on the PTF-14A body. The terminal screws accept standard wire sizes used in control panel wiring (typically 0.5–2.5mm²). Tighten terminal screws to the torque specified in the PTF-14A documentation — both overtightening and undertightening can cause unreliable connections.

Q5: What is the current rating of the PTF-14A socket?

The PTF-14A socket's contact and terminal ratings must be able to handle the LY4 relay's rated contact current — typically 5A at 250VAC for the LY4. Confirm the socket's terminal current rating from the Omron PTF-14A datasheet before use at maximum rated relay current.