Omron P2RF-08-E Relay Socket — Specs, Compatibility & Buying Guide

By Abdullah Zahid
14 min read
Omron P2RF-08-E 8-pin finger-safe plug-in relay socket for G2R series relays, DIN rail mounting

Omron P2RF-08-E Plug-in Relay Socket, 8-Pin, Front-Mounting, DIN Rail / Screw Terminal, Finger-Protection Type — Specs, Review, and Alternatives

If you are specifying or replacing an 8-pin relay socket for Omron G2R plug-in relays in an industrial control panel, the Omron P2RF-08-E is the model most engineers reach for. It is a front-mounting, DIN rail and panel-compatible socket with finger-safe screw terminals — the "-E" suffix is not cosmetic, it signals a specific safety designation that matters for compliance. Before committing to a quantity, the single most important check is confirming your relay is from a compatible family and uses an 8-pin base.

If you have already confirmed this is the correct part, check current pricing and availability for the Omron P2RF-08-E at LeadTime.ca — ships worldwide.

Who Should Buy the Omron P2RF-08-E — and Who Shouldn't

This socket is the right fit for panel builders, OEMs, and industrial plants that standardize on Omron G2R plug-in relays and require a finger-safe, screw-terminal base with DIN rail or panel mounting flexibility. Choose the Omron P2RF-08-E when all of the following apply:

  • Your relay is from the Omron G2R series or another Omron device explicitly listed as compatible with the P2RF-08-E (timers, monitoring relays, SSRs sharing the same 8-pin base).
  • You require an 8-pin socket — not 4-pin, 5-pin, 11-pin, or 14-pin.
  • Your panel standards or local inspection requirements call for finger-safe terminal protection; the "-E" designation confirms this feature is present.
  • DIN rail mounting or panel screw mounting is specified, and there is adequate space for a standard-footprint socket.
  • Screw terminals are acceptable — you are not locked into a spring-clamp-only specification.
  • UL, CSA, and EN approvals are required to meet site or project standards.

If you are running a mixed-brand relay fleet, need spring-clamp terminals, require an ultra-slim profile (consider the P2RFZ series), or need integrated electronics such as a built-in LED status indicator or relay interface module, a different variant or product family will serve you better.

On this page:

What the Omron P2RF-08-E Actually Does in a Control Panel

The Omron P2RF-08-E is a plug-in relay socket — the physical and electrical base that sits permanently wired inside your panel while the relay itself plugs in and out without touching a single field wire. Omron officially identifies the P2RF series as relay sockets dedicated to G2R relays and also suitable for solid state relays, monitoring products, and timers that share the same 8-pin footprint. That official designation matters: the P2RF series is not a universal relay base; it is a purpose-matched family designed around specific Omron relay bases.

The "-E" in the catalog number indicates the finger-protection design — screw terminals are shielded so that live terminals cannot be inadvertently contacted during installation or maintenance. For panel builders working to IEC, UL, or CSA safety standards, this is frequently a non-negotiable requirement. The 8-pin configuration accommodates both the coil circuit and the normally-open, normally-closed contact pairs of a double-pole relay, which is the standard arrangement for G2R 2-pole devices used as interposing relays between PLC outputs and field loads.

The socket mounts either on standard DIN rail or directly to a panel surface using screws — both options confirmed in the Omron P2RF series documentation. This dual-mounting flexibility makes it practical for both new DIN rail builds and panel retrofits where DIN rail is not present.

Typical System Architecture: Where the P2RF-08-E Sits in the Signal Chain

The Omron P2RF-08-E occupies the interface layer between the control system's output circuit and the field device, serving as the permanent wiring anchor while the relay provides electrical isolation and switching.

  • PLC digital output card or control circuit sends a coil voltage signal to the relay socket's coil terminals.
  • The P2RF-08-E holds the compatible Omron G2R or equivalent plug-in relay, which energizes and switches its contacts.
  • Contact terminals on the socket connect to load-side field wiring — solenoid valves, contactor coils, pilot lights, or alarm circuits.
  • The socket mounts on DIN rail alongside other sockets, allowing modular relay banks to be assembled and maintained without rewiring the field cable terminations.
  • Downstream protective devices (fuses or circuit breakers) are installed in the load circuit per project and code requirements — the socket itself requires external overcurrent protection as noted in Omron documentation.

Typical Applications for the Omron P2RF-08-E

The most common deployment is as an interposing relay base between PLC digital outputs and field loads. A G2R relay plugged into a P2RF-08-E provides voltage isolation, current amplification, and protection for the PLC output card. In OEM machinery and packaging equipment, entire DIN rail sections are populated with P2RF-08-E sockets to create standardized interposing relay banks that any technician can quickly service.

Panel builders also specify the P2RF-08-E for timer relay and monitoring relay applications where the same 8-pin base is shared across multiple Omron devices. This is one of the practical advantages Omron calls out in P2RF family documentation — the socket works with G2R relays, compatible SSRs, and monitoring products, meaning a single socket BOM line covers multiple device types in a given panel family.

Retrofit and MRO environments benefit significantly from standardizing on P2RF-08-E. Replacing older, mixed-brand sockets with a uniform Omron platform reduces spare-part SKUs, simplifies technician training, and ensures every replacement relay plugs into a known-compatible, finger-safe base. For high-maintenance circuits such as motor interlocks and alarm contacts, the ability to swap a relay in seconds without rewiring is the dominant reason this socket family is specified.

In HVAC control panels, building automation, water and wastewater facilities, and food and beverage skids, the P2RF-08-E appears frequently wherever Omron G2R relays are the house standard for control switching.

Application Typical Deployment
PLC output interposing relay bank DIN rail row of P2RF-08-E sockets with G2R relays, coil wired to PLC output card
Solenoid valve and contactor control G2R in P2RF-08-E switching 24VDC or 120VAC field loads from PLC logic
Timer relay mounting Compatible Omron timer relay plugged into P2RF-08-E, delay functions wired into control circuit
Monitoring relay base Omron monitoring product installed in P2RF-08-E for level, phase, or voltage monitoring applications
Panel retrofit standardization P2RF-08-E replacing legacy mixed sockets; field wiring retained, relays standardized to G2R family
Motor interlock and alarm circuits P2RF-08-E in high-cycle applications where relay replacement without rewiring reduces downtime

Specifications and Compatibility: What the Datasheet Tells You

The following table covers the purchase-decision-relevant specifications confirmed from Omron P2RF series documentation. Electrical rating values such as exact voltage, current, wire size, and torque figures should be verified against the current Omron datasheet for your specific application, as these parameters are not reproduced here to prevent outdated figures from influencing a design decision.

Parameter Value / Notes
Brand Omron
Catalog Number P2RF-08-E
Product Type Plug-in relay socket, 8-pin, front-mounting
Mounting Method DIN rail and panel (screw) mounting — both options confirmed in P2RF series documentation
Terminal Type Screw terminals, finger-safe ("-E" finger-protection design)
Compatible Relay Family Omron G2R series plug-in relays; also compatible with Omron SSRs, monitoring relays, and timers sharing the 8-pin P2RF base
Pin Count 8 — must match relay base exactly
Approvals UL, CSA, EN — verify exact certification marks on current product documentation for your project
Overcurrent Protection External protection required — install fuses or circuit breakers in load circuit per code
Product Series P2RF (Omron common sockets for square plug-in relays)

Full technical specifications are available on the product page at LeadTime.ca.

Omron P2RF-08-E vs P2RF-08 vs P2RFZ-08-E: Which Variant Do You Need?

The P2RF series covers multiple pin counts and terminal configurations. Understanding the differences before ordering prevents the most common wrong-part situations.

Model Pin Count Mounting Terminal Type Finger Protection Best For
P2RF-08-E 8 DIN rail / panel Screw Yes ("-E") Standard G2R installations requiring touch-safe terminals and wide sourcing availability
P2RF-08 (non-E, if locally available) 8 DIN rail / panel Screw No Applications where finger protection is not a code or standard requirement — verify local availability
P2RFZ-08-E 8 DIN rail Screw (slim-line arrangement) Yes Space-constrained panels where a narrower socket profile is required
P2RF-05-E 5 DIN rail / panel Screw Yes 5-pin Omron relay bases — not interchangeable with 8-pin devices
P2RF-11-E 11 DIN rail / panel Screw Yes 11-pin Omron relay bases — select only when relay requires 11-pin socket

If your panel space is tight and you need a narrower 8-pin socket with the same finger-safe screw terminal design, the P2RFZ-08-E is the most direct alternative — check current availability and compare options at LeadTime.ca.

Expert Verdict: Is the Omron P2RF-08-E the Right Socket for Your Project?

The Omron P2RF-08-E earns its place on practically every Omron G2R relay BOM for a straightforward reason: it does exactly what a relay socket needs to do, without unnecessary complexity. The finger-safe screw terminal design, confirmed UL and CSA approvals, and dual DIN rail and panel mounting options check the boxes that matter in industrial panel construction. Omron's own documentation identifies the P2RF series as the dedicated socket family for G2R relays and also compatible with solid state relays, monitoring products, and timers — meaning panel builders can standardize on a single socket type across multiple device functions. For OEMs running Omron G2R relays across an entire machine family, that standardization translates directly into fewer spare SKUs and faster field service.

Where the P2RF-08-E is not the right answer: if your facility uses a mixed-brand relay fleet or is specifying away from Omron plug-in relays, this socket has no role — relay sockets are not cross-brand interchangeable without changing the relay itself. If your panel layout demands a narrower footprint, the P2RFZ-08-E is the more appropriate choice. And if your wiring specification calls strictly for spring-clamp terminals, neither P2RF variant meets that requirement — you would need to evaluate Omron's spring-clamp socket options or a different relay interface platform. Engineers who need integrated LED indication or relay modules with built-in electronics will also find the P2RF-08-E under-specified for those requirements.

From a procurement standpoint, the P2RF-08-E is one of the easier Omron components to source — it is a widely stocked part at major automation distributors globally, and the risk of long lead times on standard quantities is low relative to more specialized automation hardware. That said, project quantities for large relay banks are worth confirming early in the build schedule. Buying through a specialist industrial distributor gives you access to cross-reference advice, compatibility verification, and the ability to check Canadian or regional stock before committing to a build schedule. View current pricing and availability for the Omron P2RF-08-E at LeadTime.ca — we ship worldwide.

For volume pricing, project quantities, or to confirm lead time before a panel build commitment, contact the LeadTime.ca team directly — we ship worldwide.

What Engineers Need to Know Before Ordering the Omron P2RF-08-E

Community forums yielded no meaningful model-specific feedback on the Omron P2RF-08-E — not because there is anything unusual about the part, but because it is a commodity component that functions reliably when specified correctly and rarely generates troubleshooting discussions. At the family level, Omron relay hardware is broadly regarded as straightforward and easy to source, with no significant quality controversies surfacing in the professional communities searched. The silence in public forums is itself informative: this is a mature, stable product in its category.

What this means practically is that the risk with the Omron P2RF-08-E is not in the product's performance — it is in the ordering decision. The part numbers within the P2RF family and adjacent Omron socket families (PYF for MY relays, PTF for other families) are visually similar, and the consequences of ordering the wrong socket are not discovered until the relay will not seat or the circuit behaves unexpectedly. Engineers specifying this part for the first time, or procurement agents reordering from a BOM, benefit most from a distributor who can confirm compatibility before the order ships rather than after it arrives.

The most reliable protection against wrong-part orders is working from verified Omron compatibility tables and treating the relay model and socket model as a matched pair on every BOM line. When community knowledge is sparse on a specific part, that specialist distributor relationship becomes the practical substitute — a technical sales engineer who has processed hundreds of P2RF orders can catch pin-count mismatches, "-E" omissions, and relay-family misalignments that a catalog search alone will not flag. LeadTime.ca's team handles exactly these compatibility checks as part of the quoting process.

Wiring and Installation Overview

The following points summarize the key installation requirements. For complete wiring diagrams, pin assignments, strip lengths, and torque specifications, always refer to the current Omron P2RF-08-E datasheet and the relay's own documentation.

  • Mount the P2RF-08-E on standard DIN rail by snapping into position, or use panel screws for surface mounting — confirm the method matches the panel design and that the socket is fully seated before wiring.
  • Wire coil and contact terminals strictly according to the Omron wiring diagram for the specific relay and socket pair; never assume pin assignments based on a different relay family's pattern.
  • Strip wires to the length specified in the datasheet, use ferrules where required by your wiring standard, and insert one conductor per terminal unless the datasheet explicitly permits double-lugging.
  • Tighten terminal screws to the torque value stated in the Omron datasheet — under-torqued terminals are the primary cause of intermittent contact and localized heating in service.
  • After wiring, verify the relay is fully seated in the socket before energizing; a partially inserted relay will not make reliable contact and can cause arcing or erratic circuit behavior.

Wrong-Part Prevention Checklist for the Omron P2RF-08-E

Run through every point on this checklist before finalizing your order — these are the exact checks that prevent the most common and costly specification errors with Omron relay sockets:

  1. Confirm the relay series (e.g., Omron G2R) and ensure it is listed as compatible with P2RF-08-E.
  2. Verify the relay uses an 8-pin base and not 4, 5, 11, or 14 pins.
  3. Check that "-E" finger-protection type is required; do not mix with non-E versions if panel standards demand touch-safe terminals.
  4. Confirm the mounting method (DIN rail vs panel) matches the panel design and that the socket includes the needed rail clip or screw provisions.
  5. Check wire size range and terminal type in the datasheet against the actual field wiring (stranded/solid, ferrules, etc.).
  6. Verify voltage/current and insulation ratings meet or exceed the relay and load requirements, and that approvals (UL/CSA/EN) satisfy site standards.

If any point on this checklist raises a question, contact the LeadTime.ca team before placing your order — confirming compatibility takes minutes and prevents days of project delay.

Frequently Asked Questions

Is the Omron P2RF-08-E compatible with all Omron 8-pin relays, or only the G2R series?

The P2RF-08-E is not universally compatible with every Omron 8-pin relay. Omron's documentation identifies the P2RF series as the dedicated socket for G2R relays and also compatible with certain Omron SSRs, monitoring relays, and timers that share the same 8-pin P2RF base. Relays from the MY, LY, or other Omron families use different socket families (PYF, PTF, etc.) and are not interchangeable with P2RF sockets. Always verify your specific relay model against Omron's compatibility table before ordering.

What is the practical difference between P2RF-08-E and P2RF-08 — do I actually need the "-E" version?

The "-E" designates the finger-protection design, meaning the screw terminals are shielded against inadvertent contact with live parts during installation and maintenance. If your plant standards, customer requirements, or the applicable electrical codes require touch-safe terminal protection — which is increasingly standard in industrial and commercial panel construction — the "-E" version is the correct specification. Using a non-E variant where finger protection is required creates a compliance gap that can be flagged during panel inspection.

Can the P2RF-08-E be used with relays from other manufacturers if they happen to have an 8-pin layout?

Relay sockets and relays are matched by pin layout, pin spacing, base geometry, and electrical ratings — not just pin count. An 8-pin relay from a different manufacturer is very unlikely to share the exact mechanical footprint of Omron G2R relays, and attempting to use a non-Omron relay in a P2RF-08-E risks poor contact, mechanical damage to the socket, or unsafe operation. If you need to change relay brands, the socket must be re-evaluated and re-specified accordingly.

When should I choose the P2RFZ-08-E instead of the P2RF-08-E?

The P2RFZ series uses a narrower, slim-line form factor compared to the standard P2RF, making it the preferred choice when panel space is constrained and a tighter socket pitch is needed. Both carry finger-safe terminal protection in their "-E" variants. If space is not a limiting factor, the P2RF-08-E is the more widely stocked option and the default choice for most G2R relay installations.

Does the P2RF-08-E include built-in LED indication or surge suppression?

No. The P2RF-08-E is a straightforward plug-in relay socket — it provides mechanical mounting and electrical termination without integrated LED status indication, surge suppression diodes, or relay electronics. If LED indication or coil protection circuitry is required, those features are either incorporated in the relay itself or available through separate Omron accessory products. Engineers needing a fully integrated relay interface solution should evaluate Omron's relay module range rather than the basic P2RF socket.

What external protection is required when installing the P2RF-08-E?

Omron documentation specifies that external overcurrent protection is required in the load circuit — the socket itself does not include built-in fusing or circuit breaking. Install appropriate fuses or circuit breakers in the load circuit according to your local electrical code, the relay's rated current, and the load characteristics. The specific protection device sizing should be determined based on the relay datasheet and the application's electrical design.

Why Order from LeadTime.ca

  • Global shipping — the Omron P2RF-08-E ships to customers worldwide, not limited to any single region.
  • Compatibility verification — our team confirms relay-to-socket matches before orders ship, catching wrong-part situations before they become project delays.
  • Hard-to-find and project-quantity sourcing — we handle both single-unit MRO orders and volume project requirements with the same response speed.
  • Current pricing and live availability — pricing is displayed directly on the product page so you always see the current figure without needing to request a quote for standard orders.
  • Specialist distributor support — for constrained lead times, cross-reference questions, or alternative recommendations, our team responds with technical context, not just a catalog link.

At-a-Glance Summary

  • Omron P2RF-08-E is an 8-pin, front-mounting plug-in relay socket in the P2RF series — the dedicated Omron socket family for G2R relays.
  • The "-E" suffix designates the finger-protection terminal design — required by most modern industrial panel standards.
  • Mounting options: DIN rail and panel (screw) — both confirmed in P2RF series documentation.
  • Terminal type: screw terminals — not spring-clamp; verify against your wiring specification before ordering.
  • Compatible with Omron G2R plug-in relays and Omron SSRs, monitoring relays, and timers sharing the 8-pin P2RF base — not a universal 8-pin socket.
  • Approvals include UL, CSA, and EN — verify current certification marks on the product datasheet for your project.
  • External overcurrent protection required in the load circuit — no built-in fusing in the socket.
  • No integrated LED indication or surge suppression — choose a relay or accessory product if those features are needed.
  • Primary alternative for space-constrained panels: P2RFZ-08-E (slim-line, same finger-safe screw terminal design).
  • Widely stocked globally — low lead-time risk for standard quantities; confirm project volumes early for large relay banks.

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