Schneider RXM2AB2P7 — 230V AC DPDT Relay Buying Guide

By Abdullah Zahid
14 min read
Schneider Electric RXM2AB2P7 miniature plug-in relay 230V AC DPDT installed in motor control panel socket base

Schneider RXM2AB2P7 Miniature Plug-in Relay, Harmony Electromechanical Relays, 12A, 2CO, with LED, Lockable Test Button, 230V AC — Specifications, Installation, and Alternatives

When a controls engineer or panel builder searches for the Schneider RXM2AB2P7, they are typically at one of two moments: confirming a direct replacement for an existing installation, or locking in a spec before a panel build ships. Either way, the decision hinges on three hard constraints — coil voltage, contact configuration, and contact current rating. The RXM2AB2P7 is a miniature plug-in electromagnetic relay in Schneider Electric's Zelio Relay family, rated for a 230V AC coil, DPDT (2 change-over) contact configuration, and a compact 40x27x21mm footprint that fits standard panel designs without rework. It includes an LED indicator and a lockable test button, two features that pay for themselves the first time a technician commissions a motor starter circuit in the field.

If you have already confirmed this is the correct part for your application, check current pricing and availability for the RXM2AB2P7 at LeadTime.ca — ships worldwide.

Who Should Buy the RXM2AB2P7 — and Who Shouldn't

The RXM2AB2P7 is the right relay for panel builders, system integrators, and maintenance teams who need a compact, socket-mounted auxiliary relay in an established 230V AC control circuit. Confirm all of the following before ordering:

  • Your control circuit supply is 230V AC (50/60 Hz) — not 24V DC, 48V, or 110V
  • Your application requires DPDT / 2CO contact logic — two independent changeover circuits
  • Maximum continuous load current does not exceed the contact rating (derate by 20–30% for inductive loads such as motor coils or solenoids)
  • A compatible RXZE-series socket base is already installed or will be ordered alongside this relay
  • Switched voltage does not exceed 250V AC or 28V DC
  • Ambient installation temperature falls within the -40 to +55°C operating range

If your control supply is 24V DC, order the RXM2AB2D7 instead. If you need four changeover contacts rather than two, the RXM4AB2P7 is the correct variant. If load current exceeds the relay's contact rating under continuous inductive duty, a larger contactor is required — this relay is a pilot duty device, not a main power switching device.

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What the RXM2AB2P7 Actually Does in a Control Circuit

The RXM2AB2P7 is an electromagnetic auxiliary relay — not a contactor and not a solid-state device. When 230V AC is applied to the coil (drawing just 0.9W and 1.2VA), an internal electromagnet closes the relay's two changeover contact pairs simultaneously. Remove the coil voltage and the contacts spring back to their resting state. That mechanical simplicity is exactly why this relay class remains the backbone of motor starter interlocking, pilot duty switching, and changeover logic in industrial control panels worldwide.

The DPDT configuration gives the engineer two independent circuits per relay body. Each pole provides a normally open (NO) contact, a normally closed (NC) contact, and a common (COM) terminal. This means a single RXM2AB2P7 can interlock forward and reverse motor commands simultaneously — a function that would otherwise require two separate single-pole relays. The LED indicator provides instant visual confirmation that the coil is energized, and the lockable test button allows a technician to manually switch the contacts without applying load voltage, which is invaluable during panel commissioning before the downstream system is live.

The 0.9W coil power consumption is low enough that this relay can be driven directly from PLC output cards, small control transformers, and battery-backed emergency control circuits without measurable voltage drop concerns. Its operating temperature range of -40 to +55°C covers unheated Canadian warehouses, outdoor pump enclosures, and HVAC mechanical rooms without requiring panel heating or special derating.

Typical System Architecture for This Relay

The RXM2AB2P7 sits in the control signal chain between a low-current command source — a PLC output, pushbutton, or thermostat — and a higher-current load device such as a motor contactor coil or solenoid valve. It is an intermediary switching device, not a power switching device.

  • 230V AC control supply feeds upstream protection device (typically a 2–5A fuse or circuit breaker in the control circuit)
  • Protected control supply connects to relay coil terminals (A1 and A2), housed in an RXZE-series socket base mounted on DIN rail or panel backplate
  • Command source (PLC digital output, pushbutton, limit switch, or thermostat) switches coil circuit continuity
  • RXM2AB2P7 contacts switch load circuit — typically the coil of a larger motor contactor, a pilot lamp, or a second control device
  • Downstream contactor or device then switches main power to motor, pump, fan, or actuator

Motor Control, HVAC, and Other Real-World Applications

Motor starter interlocking is the most common deployment for the RXM2AB2P7. In a forward/reverse motor circuit, two of these relays are wired so that energizing one physically prevents the other from closing — the changeover contact of the first relay breaks the coil supply of the second. This mechanical interlock is a safety requirement in conveyor, mixer, and hoist applications where simultaneous forward and reverse commands would cause catastrophic mechanical failure.

Pump and compressor control circuits frequently use this relay as the pilot switching device between a pressure switch or float switch and the main motor contactor. The low coil power draw (0.9W) means a simple float switch or pressure switch contact can energize the relay without contact degradation from inductive coil currents.

In HVAC systems, the RXM2AB2P7 handles thermostat-to-contactor switching logic — the low-current thermostat output energizes the relay coil, and the relay contacts switch the higher-current heating or cooling contactor coil. Multi-stage temperature control uses both changeover circuits to switch between heating and cooling modes from a single relay body.

Elevator floor-selection logic and conveyor directional control are additional applications where the DPDT configuration provides value: a single relay can simultaneously close the forward coil circuit and open the reverse coil circuit, ensuring clean directional changeovers without momentary overlap.

Application Typical Deployment
Motor starter interlocking Pilot relay preventing simultaneous forward/reverse contactor energization in conveyor and hoist panels
Pump and compressor on/off control Float switch or pressure switch drives relay coil; relay contacts switch main motor contactor coil
HVAC thermostat pilot switching Low-current thermostat output energizes relay; relay contacts switch heating/cooling contactor in air handler unit
Conveyor directional control PLC digital output energizes relay; DPDT contacts simultaneously close forward and open reverse contactor coil circuits
Elevator floor-level selection logic Floor call logic switches relay coil; changeover contacts route direction command to lift motor starter
Status signaling and auxiliary indication Relay energizes in parallel with main contactor coil; NC contact drives fault alarm circuit when contactor drops out unexpectedly

Key Specifications and Purchase-Decision Data

Specification Value
Relay Type Electromagnetic (electromechanical) auxiliary relay
Rated Coil Voltage 230V AC, 50/60 Hz
Contact Configuration DPDT — 2 change-over (2CO) contacts
Contact Current Rating 12A (per Schneider Electric official product page; TME distributor lists 5A — consult official Schneider datasheet to confirm for your application)
Maximum Switched Voltage (AC) 250V AC
Maximum Switched Voltage (DC) 28V DC
Coil Power Consumption 0.9W / 1.2VA
Contact Resistance 100 mΩ
Operating Temperature Range -40 to +55°C
Body Dimensions (W x D x H) 40 x 27 x 21 mm

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

RXM2AB2P7 vs. Other RXM Variants: Which One Do You Actually Need?

Model Coil Voltage Contact Configuration Key Difference from RXM2AB2P7
RXM2AB2P7 230V AC DPDT / 2CO This model — baseline reference
RXM2AB2D7 24V DC DPDT / 2CO DC coil only — same contacts and form factor; order when control supply is 24V DC
RXM4AB2P7 230V AC 4CO (four changeover contacts) Double the switching circuits — use when four independently switched loads are required from one relay
RXM2AB2P8 230V AC DPDT / 2CO Different socket base compatibility — verify base type installed before ordering this variant

If your control supply is 24V DC, the RXM2AB2D7 is the correct order — the physical form and contacts are identical, but applying 230V AC to a 24V coil will immediately destroy it. If your interlocking logic requires switching four separate circuits from a single relay energization, specify the RXM4AB2P7. For the standard 230V AC DPDT application, the RXM2AB2P7 is the correct choice — check current availability at LeadTime.ca.

Expert Verdict: Is This Relay Worth Specifying?

The RXM2AB2P7 earns its place in the Schneider Zelio Relay lineup by solving a specific problem extremely well: low-cost, compact, plug-in auxiliary switching in 230V AC control circuits where diagnostic convenience and proven reliability matter. The 40x27x21mm footprint drops into standard panel designs without modification, the 0.9W coil draw imposes negligible burden on control transformers, and the combination of LED indicator and lockable test button reduces commissioning time measurably. For panel builders standardizing on Schneider equipment, maintenance departments replacing failed relays in existing Schneider installations, and system integrators specifying pilot duty relays for motor starter, pump, or HVAC switching circuits, this relay delivers consistent value with minimal application risk.

Where the RXM2AB2P7 has genuine limits: it is not the answer when continuous load current approaches or exceeds its contact rating under inductive duty — always derate for motor coil and solenoid loads, and if sizing is borderline, move up to a larger device. It is strictly an AC coil relay; DC control supply systems require the RXM2AB2D7. High-frequency or pulse-duty switching applications — anything cycling faster than a standard industrial control sequence — belong on a solid-state relay, where contact wear is not a factor. And for new installations with full design flexibility, a PLC digital I/O module offers superior diagnostics and logic flexibility, though at significantly higher system cost. If any of these constraints apply to your project, the correct variant or alternative is available — be specific when you specify.

From a procurement standpoint, the RXM2AB2P7 is a standard catalog item in Schneider Electric's distribution network, which translates to predictable availability for single-unit replacements and multi-unit panel builds alike. The single most important thing to verify before submitting a purchase order is coil voltage — part numbers in the RXM family differ only by one or two suffix characters, and ordering RXM2AB2D7 when your panel runs 230V AC will cost you a project delay and an emergency replacement call. A specialist distributor can catch that error before shipment. View current pricing and stock status for the RXM2AB2P7 at LeadTime.ca — we ship worldwide.

For volume pricing on panel builds or to confirm lead time before committing to a production schedule, contact the LeadTime.ca team directly — we ship worldwide.

What Engineers Need to Know Before Ordering the RXM2AB2P7

Unlike consumer electronics or commodity electrical components, industrial auxiliary relays generate very little public forum discussion — not because problems don't exist, but because professional maintenance environments route technical questions through distributor technical support and official manufacturer documentation rather than public communities. Searches across Reddit automation communities, PLCTalk, PLCS.net, MrPLC, and distributor Q&A sections returned no relevant discussion threads specific to the RXM2AB2P7 or the broader RXM family. This absence is normal for a proven industrial component in professional service channels, and it means the most reliable guidance comes from the specification itself and from experienced distributors who field pre-sales technical questions on these products daily.

What that means practically is that the risk in ordering this relay is almost entirely in the specification phase, not in the product itself. The most consequential mistakes engineers and procurement teams make with this relay happen before the part ships: ordering the wrong coil voltage due to the near-identical part number suffixes (P7 for 230V AC versus D7 for 24V DC), assuming an existing socket base in the panel is compatible without verifying the RXZE series number, and sizing the relay for rated nameplate load current on an inductive device without applying a derating factor. These are not obscure failure modes — they are the predictable errors that occur when a specification is confirmed verbally rather than in writing, or when a purchasing team assumes two similar part numbers are interchangeable.

LeadTime.ca's pre-sales team works through exactly these verification steps before an order ships. Confirming that your panel's control supply is 230V AC, that the socket base installed is RXZE-series compatible, and that the load current after derating falls within the relay's contact rating takes minutes at the order stage and can prevent days of project delay. For engineers specifying this relay into a new panel design or ordering a replacement for a failed unit in the field, that technical checkpoint is where a specialist distributor provides value that a transactional online catalog cannot replicate.

Wiring and Installation Overview

  • Before handling: de-energize the control circuit completely and verify the socket base part number matches RXM relay compatibility (RXZE2S114M, RXZE14P, or equivalent RXZE-series base) — mismatched bases cause pin misalignment and contact shorts
  • Coil connections: 230V AC supply connects to coil terminals A1 and A2 using wire rated for 230V AC service; install a 2–5A fuse upstream of the coil circuit for protection
  • Contact connections: each pole provides NO, NC, and COM terminals — for simple on/off switching use COM and NO; for changeover logic (motor forward/reverse) use COM and NO on one pole, COM and NC on the second pole
  • Insertion: align relay pin 1 marker with socket pin 1 marking, insert straight down until relay body seats flush against socket — relay should not rock or shift laterally when seated
  • Commissioning verification: apply 230V AC to coil and confirm LED illuminates; use the lockable test button to manually switch contacts before load voltage is applied, verifying mechanical switching with a multimeter on NO/NC/COM terminals

Engineers requiring complete wiring diagrams, detailed pin-out documentation, and full installation procedures should consult the official Schneider Electric installation manual and datasheet for the RXM2AB2P7.

Compatible Socket Bases and Accessories

The RXM2AB2P7 is a plug-in relay — it requires a compatible socket base for mounting. The socket base must be ordered and installed separately. The following components are confirmed compatible with the RXM relay series:

  • RXZE2S114M — RXZE-series socket base, compatible with RXM 2-pole plug-in relays; DIN rail or panel mount
  • RXZE14P — RXZE-series socket base, alternative base option for RXM 2-pole series; verify against your panel DIN rail configuration
  • External fuse or circuit breaker (2–5A rated for 230V AC) — required upstream of the relay coil circuit for overcurrent protection
  • Multimeter — required for commissioning continuity checks on NO/NC/COM terminals and coil voltage verification at relay terminals

Do not assume that an existing socket base in the panel is compatible with the RXM2AB2P7 without confirming the base part number. Installing an RXM relay into an incompatible base causes terminal misalignment, potential contact shorts, and a fault that resembles relay failure but is actually a mounting error.

Wrong-Part Prevention Checklist

Before submitting your purchase order for the RXM2AB2P7, confirm every item on this checklist. Each point corresponds to a real ordering mistake that causes project delays and emergency replacement procurement:

  1. Confirm exact coil voltage is 230V AC (not 24V, 48V, or 110V — similar part numbers differ only in voltage)
  2. Verify contact configuration is DPDT / 2CO (not SPDT or other pole arrangement)
  3. Check maximum load current does not exceed relay contact rating (5–12A; derate for inductive loads like motor coils)
  4. Confirm socket base compatibility (RXM relays mount in RXZE-series bases; incompatible bases cause misalignment)
  5. Validate switched voltage limits: maximum 250V AC or 28V DC (exceeding damages contacts)
  6. Verify operating temperature range meets installation environment (-40 to +55°C standard)
  7. Confirm LED and test button features are necessary (adds cost; not needed for all applications)
  8. Check that pilot duty (low current control of larger contactors) is appropriate use case, not main power switching

If you are uncertain about any item on this checklist, contact the LeadTime.ca technical team before ordering — confirming the specification takes minutes and prevents costly re-orders.

Frequently Asked Questions

Can I use the RXM2AB2P7 to directly switch a 230V motor load?

No. The RXM2AB2P7 is a pilot duty relay rated for auxiliary switching circuits, not direct motor power switching. Use this relay to control the coil of a larger motor contactor, which then switches the motor load. Applying the motor's full running or inrush current directly through the relay contacts will cause rapid contact wear and eventual welding.

What is the difference between the RXM2AB2P7 and the RXM2AB2D7?

Coil voltage only. The RXM2AB2P7 has a 230V AC coil; the RXM2AB2D7 has a 24V DC coil. Contact configuration, physical dimensions, and socket base compatibility are identical between these two variants. Verify your control circuit supply voltage before ordering — applying 230V AC to a 24V DC coil will destroy the relay immediately.

Which socket base do I need, and can I use an existing base already mounted in my panel?

The RXM2AB2P7 is compatible with RXZE-series socket bases including the RXZE2S114M and RXZE14P. Do not assume an existing base in the panel is compatible without confirming the base part number. An incompatible socket base causes pin misalignment and terminal shorts that present as relay failure. If the existing base model is unknown, replace it when installing the new relay.

Does the LED indicator affect relay switching performance if it fails?

No. The LED indicator is a diagnostic aid that illuminates when the coil is energized. LED failure is a cosmetic issue only and does not affect the relay's switching function. The relay will continue to switch contacts normally regardless of LED condition. However, a non-illuminating LED during commissioning should prompt voltage verification at the coil terminals before assuming the LED is faulty.

How do I confirm the RXM2AB2P7 has failed versus a wiring or supply fault?

With the control circuit de-energized, use a multimeter in resistance mode: check coil terminals for a finite resistance reading (an open reading indicates a burned coil). Check NC-to-COM terminals on each pole — should read near zero ohms when coil is de-energized. Check NO-to-COM terminals — should read open when coil is de-energized. Then re-energize the coil (LED should illuminate) and verify NO-to-COM reads near zero and NC-to-COM reads open on each pole. Any reversal of expected readings, or an open coil reading, confirms relay failure and replacement is required.

Why Order From LeadTime.ca

  • Ships worldwide — no geographic restriction on orders, whether you are sourcing for a single replacement or a multi-unit panel build
  • Pre-sales technical verification — team confirms coil voltage, socket compatibility, and contact rating before the order ships, catching the most common RXM ordering errors at no charge
  • Hard-to-find and standard catalog parts sourced from the same place — no need to split orders across multiple distributors
  • Volume pricing available for panel builder and OEM orders — contact for current quote on quantities of 10 units or more
  • Direct access to Schneider technical support escalation when field issues arise beyond standard troubleshooting

At-a-Glance Summary

  • Relay family: Schneider Electric Zelio Relay / Harmony Electromechanical Relays — RXM series
  • Coil voltage: 230V AC, 50/60 Hz — suffix P7 confirms AC coil; D7 suffix indicates 24V DC (different model)
  • Contact configuration: DPDT / 2CO — two independent changeover circuits, each with NO, NC, and COM terminals
  • Contact current rating: 12A per Schneider official product page (5A per TME source — verify official datasheet for application sizing)
  • Maximum switched voltage: 250V AC or 28V DC — do not exceed either limit
  • Coil power consumption: 0.9W / 1.2VA — compatible with PLC outputs and battery-backed control circuits
  • Contact resistance: 100 mΩ
  • Operating temperature: -40 to +55°C — covers outdoor, unheated, and HVAC mechanical room environments
  • Body dimensions: 40 x 27 x 21 mm — drops into standard panel designs without modification
  • Mounting: socket-mounted plug-in — requires RXZE-series base (RXZE2S114M or RXZE14P) ordered separately
  • Features: LED indicator illuminates when coil energized; lockable test button for manual contact switching during commissioning
  • Critical ordering check: confirm full part number RXM2AB2P7 against electrical schematic coil voltage before submitting order

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