Omron MY4IN-GS-R AC12 Plug-in Power Relay Guide

The Omron MY4IN-GS-R AC12 plug-in power relay is a 14-pin, 4PDT electromechanical relay designed for control panels, machine control circuits, and low-voltage AC command systems. Its 12 VAC coil makes it suitable for applications where a compact relay must respond to a low AC control signal while switching multiple independent circuits through one device.

Key Technical Profile

This relay belongs to Omron’s MY series and uses a plug-in socket mounting format. It has four changeover contact sets, commonly described as 4PDT or 4 Form C. The rated carry current is 6 A, and the contact arrangement allows one coil input to operate four separate circuits at the same time. This is valuable in interlock logic, alarm circuits, auxiliary signaling, motor control panels, and automation cabinets where space and wiring clarity matter.

The MY4IN-GS-R AC12 version includes mechanical and LED indicators, helping technicians confirm relay status without removing the unit. The lockable push test button is especially useful during commissioning and maintenance because it allows manual actuation for functional checks. The transparent case supports quick visual inspection, while the plug-in design simplifies replacement compared with hard-wired relay formats.

Omron MY4IN-GS-R AC12 Where This Relay Is Commonly Used

Because it combines a 12 VAC coil with a four-pole output structure, this relay is often selected for low-voltage control transformers, panel logic, building control circuits, test benches, and machine safety-related auxiliary indication. It is not a replacement for a safety relay, but it can support status transfer, signal multiplication, and auxiliary control tasks in properly designed systems.

Selection Notes

When specifying the Omron MY4IN-GS-R AC12 relay, engineers should confirm coil voltage, load type, socket compatibility, contact current, switching voltage, and environmental conditions. Resistive loads are generally less demanding than inductive loads, so motors, solenoids, and contactor coils should be reviewed carefully. A compatible 14-pin Omron socket should be selected to match the mounting method and wiring standard.

For broader Omron relay options, visit more information about Omron.

FAQ

What is the Omron MY4IN-GS-R AC12 used for?

It is used to switch multiple control circuits from a 12 VAC coil signal. Typical uses include machine control panels, indication circuits, interlocks, auxiliary switching, and automation cabinet wiring.

Omron MY4IN-GS-R AC12 What does 4PDT mean on this relay?

4PDT means four-pole double-throw. The relay has four independent changeover contacts, so one coil can transfer four separate circuits between normally closed and normally open states.

Does this relay have an indicator?

Yes. The MY4IN-GS-R AC12 includes both mechanical and LED indication, making it easier to check whether the relay is energized during operation or troubleshooting.

Why is the push test button useful?

The lockable push test button allows technicians to manually operate the relay during testing. This helps verify downstream wiring, signal paths, and panel logic before full system operation.

Is this relay suitable for 24 VDC control circuits?

No. This specific model has a 12 VAC coil. For 24 VDC systems, a model with a 24 VDC coil should be selected.

Can it be replaced quickly?

Yes. Its plug-in format allows the relay body to be removed from a compatible socket, reducing wiring disturbance during maintenance.