Omron G2R-2-SN — DPDT Relay Specs, Variants & Buyer Guide

By Abdullah Zahid
15 min read
Omron G2R-2-SN DPDT 5A plug-in relay with LED indicator for industrial control panel DIN rail installation

Omron G2R-2-SN Plug-In Relay, DPDT, 5 A, with Mechanical and LED Indicators — Specs, Review, Pricing and Selection Guide

Controls engineers and panel builders searching for the Omron G2R-2-SN are almost always at the same decision point: they have a PLC output or control board that needs a dependable, space-saving DPDT relay for interfacing to field loads, and they want to confirm the exact variant, socket match, and coil voltage before the BOM is locked. The G2R-2-SN is a slim, 8-pin, double-pole double-throw plug-in relay rated at 5 A per pole from Omron's established G2R/G2RS general-purpose family, supplied with a transparent housing, mechanical operation flag, and LED indicator on (S) versions. Get those three variables right — coil voltage, contact rating, and socket — and this relay earns its place on virtually any industrial DIN rail.

If you have already confirmed this is the correct part, check current pricing and availability for the Omron G2R-2-SN at LeadTime.ca — ships worldwide.

Who Should Buy the Omron G2R-2-SN — and Who Shouldn't

This relay is the right choice for engineers and panel builders who can confirm all of the following:

  • Your control circuit delivers a coil voltage that exactly matches the G2R-2-SN variant you are ordering — DC and AC options exist, and the rated voltage is encoded in the part number suffix.
  • Your switching load is within the DPDT 5 A per pole contact rating, accounting for load type (resistive versus inductive) and any required safety margin.
  • Your panel or enclosure design uses a plug-in 8-pin socket, specifically from Omron's P2RF or P2R series or a documented equivalent — this is not a PCB-mount relay.
  • You require or prefer visual status indication: the (S) variants provide both a mechanical operation flag and an LED indicator, which simplify commissioning and field diagnostics without test equipment.
  • Your application falls within general-purpose industrial control, OEM machine interfacing, or MRO replacement in discrete manufacturing, HVAC, packaging, or similar industries.

If your application demands switching currents above 5 A, requires a single-pole 10 A contact, needs extremely high switching frequency, or calls for a safety-rated relay, the G2R-2-SN is not the right fit. The Omron G2R-1-SN (SPDT, 10 A) or a solid-state relay for high-frequency switching are the more appropriate directions — both are discussed further below.

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What the Omron G2R-2-SN Actually Does in a Control Panel

The G2R-2-SN occupies the interface row in a control panel — the layer between a low-voltage PLC output, relay output module, thermostat, or control board, and the field devices that draw meaningful current: contactor coils, solenoid valves, indicator lamps, alarm buzzers, and small motors. Its core function is galvanic isolation: the coil circuit and the contact circuit are electrically separate, protecting sensitive control equipment from voltage spikes, load transients, and ground loops originating on the field side.

The DPDT contact configuration — two poles, each with a normally open and normally closed contact — gives the engineer two independently switched circuits from a single relay. This is particularly useful for interlock and permissive logic, feedback confirmation, dual-load switching from one output, or situations where both making and breaking a circuit on a single event is required. At 5 A per pole, the G2R-2-SN handles the majority of control panel interface loads without needing a contactor or higher-rated relay.

Omron's documentation positions the G2R/G2RS series as slim, space-saving plug-in relays for general-purpose and interface applications. The transparent plastic housing is not just an aesthetic choice — it allows a technician standing in front of an open enclosure to see contact position and confirm that the relay body is undamaged without removing anything from the socket. The mechanical operation flag and LED indicator (on (S) variants) add a second and third layer of visual confirmation, making the G2R-2-SN one of the more diagnostic-friendly relay formats available in this class.

Typical System Architecture for the G2R-2-SN

The G2R-2-SN sits between the controller's output stage and the field load, providing isolation and current amplification. A typical DIN-rail panel deployment looks like this:

  • PLC or control board digital output → coil terminals on the P2RF/P2R 8-pin socket → G2R-2-SN relay coil energizes
  • G2R-2-SN DPDT contacts switch field power (AC or DC) to downstream loads such as contactor coils, solenoid valves, or indicator circuits
  • Each pole's normally open and normally closed contacts are available at the socket terminals for independent circuit routing
  • DIN-rail mounted sockets allow the relay body to be removed and replaced without rewiring the panel
  • Optional test button on (S) variants allows manual forcing of the contacts during commissioning or fault-finding without energizing the coil

Where the G2R-2-SN Is Used: Industries and Applications

In discrete manufacturing panels, the G2R-2-SN most commonly appears as the output interface relay on PLC digital output cards, multiplying low-current transistor or relay outputs into contact closures capable of driving contactor coils, solenoid valves, and pneumatic actuators. Panel builders in this sector often standardize on a single relay and socket family across all machines in a plant, and the G2R-2-SN's broad availability and stable Omron ecosystem supports exactly that kind of standardization.

OEM machine builders in packaging, conveyor, and material handling applications favor the slim 16 mm profile because it allows more relay positions per meter of DIN rail, keeping panels compact. The transparent housing and mechanical flag reduce commissioning time: a technician can confirm relay state visually while the machine is running through a test cycle, without probing with a meter.

In HVAC and building automation panels, the G2R-2-SN handles switching between low-voltage thermostat or DDC outputs and 24 VAC or line-voltage loads. The availability of both DC and AC coil variants in the same physical package means a panel designer can standardize the socket and wiring footprint while specifying the appropriate coil voltage for each control circuit.

MRO and maintenance teams stock the G2R-2-SN as a general-purpose replacement relay because the plug-in socket format makes field swaps fast and low-risk — pull the faulty relay, insert the replacement, restore power. The relay's long-standing presence in the G2R/G2RS family also means it is a known quantity in storerooms at many facilities.

Application Typical Deployment
PLC output interfacing Relay mounted in socket row on DIN rail; coil driven by PLC digital output; contacts switch contactor or valve coil
HVAC and building automation 24 VAC or 24 VDC coil version switching fan contactors, damper actuators, or alarm circuits
OEM packaging machinery Slim profile allows high-density relay rows; mechanical flag used for commissioning verification
Material handling and conveyors DPDT contacts used for interlock and permissive logic at conveyor zone boundaries
MRO storeroom replacement Plug-in format enables fast field swap without rewiring; stocked alongside compatible sockets
Water and wastewater panels Interface relay between control system outputs and pump control or valve solenoid circuits

Key Specifications and Variant Options

Parameter Value
Relay type General-purpose plug-in power relay, G2R/G2RS family
Contact configuration DPDT (2 Form C), 2 poles
Rated carry current 5 A per pole (refer to load curves in datasheet for exact limits by load type)
Coil type AC or DC coil variants available; exact voltage defined by part number suffix
Typical coil voltages available DC: 6, 12, 24, 48 VDC; AC: 24, 110/120, 230/240 VAC (family-level; confirm per variant)
Mounting method Plug-in, 8-pin socket (Omron P2RF/P2R series or compatible)
Body width Slim profile, approximately 16 mm (confirm exact dimension from Omron datasheet)
Visual indication Transparent housing; mechanical operation flag standard; LED indicator on (S) versions
Test button Available on (S) suffix versions; allows manual contact actuation without coil voltage
Intended use General-purpose interface relay for industrial control panels, OEM machinery, and MRO replacement

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

G2R-2-SN vs G2R-1-SN vs MY2: Which Omron Relay Do You Actually Need?

Model Contact Configuration Rated Current Profile Visual Indication Socket Family Best For
G2R-2-SN DPDT (2 Form C) 5 A per pole Slim ~16 mm LED + mechanical flag ((S) versions) P2RF/P2R 8-pin DPDT interface, interlocks, dual-circuit switching
G2R-1-SN SPDT (1 Form C) 10 A Slim LED + mechanical flag P2RF/P2R compatible Higher-current single-pole loads; single-circuit switching
MY2 (Omron) DPDT (2 Form C) 5 A per pole Traditional wider profile Mechanical flag; LED on some versions PYF08A and similar (different pinout) Legacy panel replacement; existing MY-series socket installations

If your load exceeds the 5 A per pole rating or requires only a single pole at 10 A, the G2R-1-SN is the correct direction — check current availability and pricing at LeadTime.ca and contact the team to confirm the right variant for your application.

Expert Verdict: Is the Omron G2R-2-SN Worth Standardizing On?

For panel builders, OEM machine builders, and maintenance teams who need a dependable DPDT 5 A interface relay with strong visual diagnostics and a stable supply ecosystem, the G2R-2-SN is a genuinely solid choice. Omron's own documentation confirms the 5 A per pole DPDT rating, the slim approximately 16 mm profile, and the inclusion of both a mechanical operation indicator and an LED on (S) variants — these are not just marketing claims but verified design features. The transparent housing and plug-in socket format mean that a technician can diagnose a suspected relay fault, confirm the replacement, and have the panel back in service in minutes without specialized tools. For facilities that run dozens or hundreds of these relays across multiple machines, that maintenance simplicity translates directly into reduced downtime cost.

The G2R-2-SN does have real boundaries worth naming honestly. It is not appropriate for high switching frequency applications where contact wear would be accelerated, for very heavy inductive loads near or above its rated limits without proper contact protection, or for safety-function circuits that require IEC 62061 or EN ISO 13849 rated safety relays. In those scenarios, a solid-state relay (for high-frequency or silent operation), a higher-rated power relay, or a certified safety relay module is the correct specification. The MY2 is worth considering if you are replacing into an existing panel already wired to MY-series sockets — the footprint and pinout differ from the G2R-2-SN, and assuming interchangeability is one of the more common and costly misorders in this category.

From a procurement standpoint, common DC coil variants such as the G2R-2-SN DC24 (S) are generally stocked by major industrial automation distributors and available for fast shipment. Less common coil voltages and special option variants frequently carry multi-week lead times as factory-order items, which matters when a machine is down or a BOM has a hard delivery date. Working with a specialist distributor means having someone who can confirm the exact suffix, cross-check socket compatibility, and identify an in-stock alternative if the first-choice variant is on extended lead time before you commit the order. View current pricing and stock status for the Omron G2R-2-SN at LeadTime.ca — we ship worldwide.

For volume pricing, lead time confirmation ahead of a large build, or help identifying the correct coil voltage variant and matching socket, contact the LeadTime.ca team directly — we ship to customers worldwide.

What Engineers Are Saying About the Omron G2R-2-SN

Across communities including Reddit r/PLC, PLCTalk, PLCS.net, and MrPLC, discussion of the Omron G2R/G2RS relay family consistently circles back to the same themes. The most frequently expressed sentiment is straightforward confidence: engineers describe these relays as dependable workhorses that run for years in busy panels with very few unexpected failures. The transparent housing, LED indicator, and mechanical flag draw specific praise from field technicians and commissioning engineers who value being able to read relay state from a meter away without opening the enclosure or pulling out test gear. Panel builders who have standardized on the G2R/G2RS socket ecosystem appreciate that replacement relays are easy to source, and that the slim 16 mm profile allows high-density DIN-rail installations without the footprint penalty of older-generation plug-in relays.

The complaints that do appear are almost entirely about application misuse rather than product defects. Engineers on multiple forums have flagged that G2R relays pushed near their 5 A per pole limit on inductive loads — motor starters, solenoid valves, transformer primaries — without proper contact suppression show accelerated contact wear and occasional welding. The recommendation that appears repeatedly in these discussions is to either derate the contact load, add RC snubbers or varistors on inductive AC loads, or use a diode across DC coil loads, in line with Omron's own application guidance. A separate thread of complaints covers DC coil versions with built-in LED and diode: because the diode creates polarity sensitivity, wiring the coil terminals in reverse prevents the relay from operating entirely, and this catches engineers who are used to treating DC coil relays as polarity-agnostic.

Ordering mistakes are the third recurring theme. Community members across PLCTalk and distributor Q&A forums note that Omron's G2R/G2RS part number suffixes for coil voltage and options are compact and easy to misread, leading to 24 VAC being ordered instead of 24 VDC, or a variant without LED indicator being delivered to a maintenance team that expects the visual flag. A separate and more costly mistake described on multiple forums is assuming that the G2R-2-SN and the MY2 are interchangeable because both are DPDT 5 A plug-in relays — they are not pin-compatible, and installing a G2R-2-SN into an MY-series socket (or vice versa) results in miswiring. Confirming exact suffix, coil type, and socket family before placing the order is the consistent advice from experienced users.

Wiring and Installation Overview for the Omron G2R-2-SN

  • Mount the compatible 8-pin socket (Omron P2RF or P2R series) to DIN rail or panel surface before wiring; tighten all mounting hardware to the socket manufacturer's specified torque.
  • Wire the coil terminals on the socket to the control output and return; for DC coil (S) versions with built-in LED and diode, polarity is significant — confirm positive and negative terminal assignment from the socket wiring diagram before energizing.
  • Wire the contact terminals (common, normally open, normally closed for each pole) to the load circuit according to panel schematics; the transparent housing and socket markings identify contact groupings.
  • Insert the G2R-2-SN relay body firmly into the socket until fully seated; verify any retaining clip or latch is engaged to prevent the relay from being vibrated out of the socket in service.
  • Apply control voltage and confirm operation: LED illumination, mechanical flag movement, and correct NO/NC contact switching should all be observable; use the test button on (S) variants to verify contact switching manually before applying load power.

Full wiring diagrams, coil pin assignments, and contact terminal numbering for each variant are available in the Omron G2R/G2RS datasheet. Engineers requiring complete installation procedures should reference official Omron documentation.

Wrong-Part Prevention Checklist Before You Order the Omron G2R-2-SN

Most field problems and return orders for the G2R-2-SN trace back to one of the following pre-order oversights. Verify each point before finalizing the part number:

  1. Confirm exact coil voltage and type printed on the relay (e.g., 24 VDC vs 24 VAC vs 110 VAC) matches control voltage in the panel.
  2. Verify DPDT contact form and 5 A rating are adequate for the load type (AC vs DC, resistive vs inductive) and safety margins.
  3. Check that the relay style is plug-in with 8-pin base (G2R-2-SN) and not a PCB-mount or different footprint G2R variant.
  4. Match the relay to a compatible socket (e.g., Omron P2RF/P2R 8-pin base); confirm pinout and mounting style (DIN-rail or panel-mount).
  5. Decide whether LED indicator and mechanical flag are required; ensure the suffix ordered includes these features (G2R-2-SN (S), etc.).
  6. Check control system polarity for DC coils; LED/diode versions can be polarity-sensitive.
  7. Confirm any required approvals (e.g., for use in North American industrial panels) are met by the specific variant.
  8. Verify operating environment (ambient temperature, vibration, humidity) is within the relay's ratings.

If you are unsure about any item on this checklist, contact the LeadTime.ca team before ordering — confirming the correct variant up front is faster and less expensive than handling a misorder after the fact.

Frequently Asked Questions

What socket is compatible with the Omron G2R-2-SN, and will it fit my existing base?

The G2R-2-SN uses an 8-pin plug-in base and is designed for use with Omron's P2RF or P2R series sockets. These sockets are available in DIN-rail mount and panel-mount styles, with screw-clamp or spring-clamp terminal options. If you have an existing socket installation, verify the socket part number and pinout against Omron's compatibility documentation before assuming the G2R-2-SN will drop in — the MY2 series uses a different socket family and is not interchangeable.

Can I replace an Omron MY2 relay with a G2R-2-SN without rewiring?

No — this is one of the most frequently reported ordering mistakes in the community. The MY2 and G2R-2-SN are both DPDT 5 A plug-in relays, but they have different physical footprints and pin arrangements. Replacing a MY2 with a G2R-2-SN requires a change of socket as well as the relay body; the contact and coil wiring on the socket will also need to be confirmed against the new pinout. Plan for a socket changeover if you are migrating between families.

How do I confirm whether my G2R-2-SN has an AC or DC coil?

The coil voltage and type are encoded in the part number suffix — for example, DC24 indicates a 24 VDC coil, and AC24 indicates a 24 VAC coil. This information is also printed on the relay body label. If you are receiving stock, physically check the relay marking against your BOM before installation; the part number suffixes for common coil voltages are similar enough that AC and DC versions can be mixed up during picking or ordering.

Is the G2R-2-SN rated for switching small motor or contactor loads, or only control signals?

The G2R-2-SN is rated at 5 A per pole and is suitable for switching control-level loads including contactor coils, solenoid valves, indicator lamps, and similar devices. For inductive loads, the contact current should be kept within the rated limits with appropriate derating, and contact protection such as RC snubbers (for AC inductive loads) or flyback diodes (for DC inductive loads) should be used to prevent excessive arcing and contact wear. The relay does not provide overcurrent protection — external fusing is required. Direct motor switching above the rated current should use a contactor or appropriately rated device.

What does the LED indicator on the G2R-2-SN (S) actually show — coil status or contact status?

The LED on the (S) variant indicates coil energization — it confirms that control voltage is present at the coil terminals and the coil is conducting. It does not directly indicate contact position or load current. The mechanical operation flag provides a secondary confirmation of physical armature movement. Together, these two indicators allow a technician to distinguish between a coil-voltage fault (LED off, flag stationary) and a contact fault (LED on, flag moved, but load circuit not switching), which significantly narrows troubleshooting time.

Are common G2R-2-SN variants typically in stock, and what are typical lead times for less common coil voltages?

Based on distributor and manufacturer literature, common DC coil variants such as the G2R-2-SN DC24 (S) are generally stocked by major industrial automation distributors and available for fast shipment. Less common coil voltages and special option variants are frequently factory-order items with multi-week lead times. For critical-path orders or large builds, confirming current stock status with a specialist distributor before committing to the BOM is advisable.

Why Order the Omron G2R-2-SN Through LeadTime.ca

  • LeadTime.ca specializes in industrial automation components and can confirm exact coil voltage suffix, (S) indicator options, and socket compatibility before the order ships — reducing misorder risk.
  • Global shipping: LeadTime.ca ships worldwide, not limited to any single region, making it a viable source for procurement teams, OEMs, and MRO buyers regardless of location.
  • Access to current stock information and lead time estimates on both common and less common G2R-2-SN variants, including compatible P2RF/P2R sockets.
  • Volume pricing available for OEM builds and panel shops ordering multiple relays and sockets — contact the team directly for project quantities.
  • Specialist advice when a specific variant is on extended lead time: the team can identify in-stock alternatives within the G2R/G2RS family and confirm compatibility before you adjust the BOM.

At-a-Glance Summary

  • The Omron G2R-2-SN is a DPDT plug-in relay with 2 poles and a rated carry current of 5 A per pole from the G2R/G2RS general-purpose family.
  • Slim profile of approximately 16 mm width supports high-density DIN-rail relay rows in compact control panels.
  • Uses an 8-pin plug-in socket — Omron P2RF or P2R series; not interchangeable with MY-series sockets or PCB-mount G2R variants.
  • Available in both DC and AC coil versions; coil voltage and options are encoded in the part number suffix (e.g., DC24 (S) for 24 VDC with LED and mechanical flag).
  • The (S) variant includes both a mechanical operation flag and an LED indicator for visual diagnostics without test equipment.
  • Common DC coil variants are typically stocked by major industrial automation distributors; less common coil voltages frequently require factory ordering with multi-week lead times.
  • Most field failures and misorders trace to wrong coil voltage (especially AC vs DC confusion), exceeding contact ratings on inductive loads without suppression, and socket incompatibility — all preventable with the pre-order checklist above.
  • For high-frequency switching, silent operation, or loads above 5 A per pole, consider solid-state relays or the G2R-1-SN (SPDT, 10 A) respectively.

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