Omron MY4N-GS 220/240VAC Miniature Power Relay Guide
The Omron MY4N-GS 220/240VAC miniature power relay is a general-purpose plug-in relay for industrial and commercial control panels. With a 220/240 VAC coil, LED operation indication, and 4PDT contact arrangement, it is a practical component for switching multiple circuits from a single AC control signal.
Core Technical Features
This relay has four poles with single changeover contacts, often described as 4PDT or 4 Form C. It uses plug-in terminals and is designed for socket mounting. The LED indicator provides quick confirmation of coil energization, while the enclosed relay body helps protect the internal mechanism in normal panel environments.
The MY4N-GS 220/240VAC relay is often selected where the control circuit voltage is already available at 220 to 240 VAC. It can be used to interface signals, multiply auxiliary contacts, operate indication circuits, or switch moderate control loads. Its compact format helps reduce panel space compared with larger contactor-based solutions when only relay-level switching is required.
Typical Use Cases
This model is suitable for machine control cabinets, HVAC panels, lighting automation, pump control systems, production lines, and industrial auxiliary circuits. In many panels, a 4PDT relay is used when several devices must respond together, such as pilot lights, alarms, PLC inputs, and interlock chains.
Why Plug-in Relays Remain Useful
Even in advanced automation systems, plug-in electromechanical relays remain valuable because they provide physical isolation, visible operation, simple replacement, and flexible contact wiring. The Omron MY4N-GS 220/240VAC relay supports these advantages while keeping installation straightforward through compatible 14-pin sockets.
Selection and Installation Notes
Before choosing this relay, verify coil voltage, socket compatibility, contact load, ambient conditions, and wiring layout. AC coils should be matched exactly to the control voltage. Loads such as solenoids, small motors, and contactor coils may require attention to inrush current and contact protection. Correct socket selection is also important for reliable long-term panel operation.
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Omron MY4N-GS 220/240VAC FAQ
What is the Omron MY4N-GS 220/240VAC relay?
It is a 4PDT plug-in miniature power relay with a 220/240 VAC coil, intended for general control panel switching applications.
Does it include an operation indicator?
Yes. The relay includes an LED operation indicator, making it easier to identify coil status during operation.
What socket type is generally used?
It is used with compatible 14-pin Omron MY relay sockets. The exact socket should be selected based on panel mounting and wiring requirements.
Can this relay switch several circuits at once?
Yes. Its 4PDT contact form allows four separate changeover circuits to operate from one coil signal.
Is it suitable for low-voltage DC coil systems?
No. This model has a 220/240 VAC coil. A DC coil version should be used for DC control systems.
Why choose this model in a control panel?
It offers compact size, clear indication, socket-based maintenance, and four contact sets, which makes it useful for organized relay logic and auxiliary switching.