Omron MY4ZIN-CR 220/240VAC (S) Miniature Power Relay

The Omron MY4ZIN-CR 220/240VAC (S) miniature power relay is widely used in industrial automation panels where reliable switching and stable control logic are required. Designed as part of Omron’s MY relay series, this model combines compact dimensions with dependable switching performance, making it suitable for control cabinets, HVAC systems, machine automation, and interface circuits.

This relay operates with a 220/240VAC coil and features a 4PDT contact structure, allowing multiple independent circuits to be controlled simultaneously. Engineers and panel builders often select this relay when several signal paths must be switched from a single relay operation while maintaining electrical isolation between contacts.

Technical Characteristics of the Omron MY4ZIN-CR 220/240VAC (S) Miniature Power Relay

The relay includes bifurcated contacts that help improve switching reliability, especially in low-level signal applications. Bifurcated contact construction supports stable electrical continuity because the contact surface is divided into dual contact points. This design is beneficial in automation systems where signal consistency matters.

The built-in CR circuit is another important technical advantage. Coil surge suppression helps reduce electrical noise generated during switching operations. In industrial environments that include PLC systems, sensors, timers, and counters, reduced electrical interference can contribute to more stable system behavior.

The plug-in design simplifies relay replacement and maintenance. Instead of disconnecting multiple wires, technicians can remove the relay directly from its socket during troubleshooting or replacement procedures.

Industrial Applications

The Omron MY4ZIN-CR 220/240VAC (S) miniature power relay is commonly installed in industrial control cabinets, conveyor systems, packaging equipment, HVAC control systems, and auxiliary machine circuits. Because the relay offers four independent changeover contacts, it can support several control tasks simultaneously.

Many automation designers use this relay in interlock systems where multiple outputs must respond to one control signal. It is also frequently integrated into alarm systems, motor control logic, and switching interfaces between PLC outputs and field devices.

Its visual operation indicator supports easier diagnostics during maintenance procedures. This can reduce downtime because technicians can quickly verify relay activation status.

For more information about industrial relay technologies and compatible Omron automation components, visit Omron.

Benefits for Automation Panels

One of the main advantages of the Omron MY4ZIN-CR 220/240VAC (S) miniature power relay is installation flexibility. The compact body allows efficient cabinet organization while still offering multiple contact outputs. In modern industrial control panels where space optimization matters, compact relays help simplify layout planning.

The relay is also designed for long-term operational stability. Omron relays are widely recognized in automation environments because they support dependable switching cycles under continuous industrial use.

Frequently Asked Questions

What is the Omron MY4ZIN-CR 220/240VAC (S) miniature power relay used for?

This relay is used in industrial control systems for switching multiple circuits from a single control signal. Common applications include automation panels, HVAC systems, conveyor controls, and machine interfaces.

What does 4PDT mean?

4PDT stands for four-pole double-throw. This means the relay contains four independent changeover contacts that switch simultaneously when the coil is energized.

Why are bifurcated contacts important?

Bifurcated contacts improve switching reliability because they create two contact paths instead of one. This helps maintain stable electrical continuity in low-current signal circuits.

Does the relay include surge protection?

Yes. The relay contains a built-in CR circuit that helps suppress coil surge and reduce electrical interference during switching operations.

Can this relay be used in PLC systems?

Yes. The relay is commonly used in PLC-based automation systems when the electrical ratings match the application requirements.

Is the relay socket mounted?

Yes. The Omron MY4ZIN-CR 220/240VAC (S) miniature power relay is designed for plug-in socket installation, simplifying replacement and maintenance.