Omron MY4IN 24VDC (S) Power Relay: Technical Guide, Applications and Installation
Industrial automation decisions are rarely reversed quickly. Choosing the Omron MY4IN 24VDC (S) Power Relay for industrial control panels applicationsat 24V DC is the kind of decision that stays looking smart years later, when the system is still running without issues.
Omron’s product range extends well beyond relays and switches. The company’s Omron Sensor portfolio covers inductive, photoelectric, and capacitive detection technologies — often integrated into the same panel alongside units like this one, creating a fully cohesive control system.
What Is the Omron MY4IN 24VDC (S) Power Relay?
The Omron MY4IN 24VDC (S) is a Power Relay rated at 24V DC, built to handle industrial control panels reliably over a long service life. Key engineering features include transparent cover, led coil-type indicator, 2.6 mm wide pins for low heat rise, and the unit mounts via din rail socket.
What separates this unit from generic alternatives is in the details: transparent cover, led coil-type indicator, 2.6 mm wide pins for low heat rise. The coil operates at 24V DC, making it straightforward to match to existing control voltage buses without additional transformers or converters.
Technical Specifications
The table below summarises the main technical parameters of the Omron MY4IN 24VDC (S). For full specifications, always refer to the official Omron product datasheet, as application-specific derating may apply.
| Parameter | Value |
|---|---|
| Product Type | Power Relay |
| Coil / Operating Voltage | 24V DC |
| Contacts / Channels | 4-pole (4PDT) |
| Contact Current | 10 A |
| Key Features | Transparent cover, LED coil-type indicator, 2.6 mm wide pins for low heat rise |
| Mounting | DIN rail socket |
| Mechanical Lifetime | 10 million mechanical operations |
| Operating Temperature | -25 °C to +70 °C |
| Compatible Socket | PYF14A |
Where Is It Used?
The Omron MY4IN 24VDC (S) Power Relay is commonly specified for the following applications:
- Industrial control panels
- Motor control
- Energy management
Across these use cases, the consistent thread is a need for dependable switching over a large number of operations, often in environments where an unplanned fault would create significant disruption. The Omron MY4IN 24VDC (S) is designed with exactly those conditions in mind.
The Omron MY4IN 24VDC (S) is designed to be used with PYF14A. Using a non-compatible socket model can compromise contact pressure and reduce overall service life, so always verify socket compatibility before ordering.
Installation Notes
One underrated aspect of working with Omron components like the MY4IN 24VDC (S) Power Relay is the consistency of the mounting system. If you have installed any other unit from the same family, the process is identical — same rail, same socket dimensions, same terminal layout. That repeatability genuinely speeds up panel assembly in high-volume projects.
For ongoing maintenance, periodically inspect for contact discolouration, check terminal screws for loosening, and look for any signs of heat stress on the housing. Catching these early avoids the much larger cost of an unplanned production stop.
Why Choose the Omron MY4IN 24VDC (S)?
The case for choosing the Omron MY4IN 24VDC (S) Power Relay is not built on marketing alone. It rests on measurable factors: documented mechanical and electrical lifespan ratings, certifications that satisfy CE and UL requirements, and a global spare parts network that means you can source a replacement quickly when a unit eventually reaches end of life.
Frequently Asked Questions
What is the difference between the Omron MY4IN 24VDC (S) and a mechanical contactor?
The Omron MY4IN 24VDC (S) Power Relay is designed for panel-level signal and load switching at the current ratings specified. A contactor is built for direct motor starting at higher currents. For applications within the rated capacity of the Omron MY4IN 24VDC (S), it offers faster switching, longer life, and a smaller footprint than a contactor.
How does temperature affect the Omron MY4IN 24VDC (S)?
Like all electromechanical devices, performance can be affected at the extremes of the operating temperature range. The Omron MY4IN 24VDC (S) is rated for use across a defined ambient temperature range — consult the datasheet for precise limits and any derating requirements at elevated temperatures.
Can I mount multiple Omron MY4IN 24VDC (S) units side by side on a DIN rail?
Yes. The Omron MY4IN 24VDC (S) Power Relay is designed for standard DIN rail assembly with adjacent units. Ensure adequate total load current is within the rail and busbar capacity, and that enclosure ventilation is sufficient for the combined heat dissipation.
Does the Omron MY4IN 24VDC (S) include a test facility?
Depending on the model variant, some Omron relay sockets include a manual test button or push-to-test function. Check the specific socket model specified for the Omron MY4IN 24VDC (S) to confirm whether this feature is available.
How long is the warranty on the Omron MY4IN 24VDC (S)?
Omron provides a standard 12-month manufacturer warranty on products purchased through authorised distributors. Extended warranty options may be available — contact your local Omron distributor for details.