Omron MY4IN 100/110VDC (S) Power Relay: Technical Guide, Applications and Installation
There is a reason certain relay and switch models appear in panel after panel across different industries: they simply work. The Omron MY4IN 100/110VDC (S) Power Relay is one of those models— it operates at 100/110V DC and has become a go-to choice for industrial control panels applications.
For projects where sensing and switching decisions need to be made together, Omron’s Omron Sensor products are a natural companion to this unit. Both families are built to the same quality standards and documented to the same CE and UL requirements, which simplifies the declaration of conformity process.
About the Omron MY4IN 100/110VDC (S) Power Relay
The Omron MY4IN 100/110VDC (S) is a Power Relay rated at 100/110V 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.
The engineering case for the Omron MY4IN 100/110VDC (S) Power Relay rests on a clear set of advantages: transparent cover, led coil-type indicator, 2.6 mm wide pins for low heat rise. Operating voltage of 100/110V DC slots neatly into most European and global panel designs.
Specifications at a Glance
The table below summarises the main technical parameters of the Omron MY4IN 100/110VDC (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 | 100/110V 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 |
Industry Use Cases
The Omron MY4IN 100/110VDC (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 100/110VDC (S) is designed with exactly those conditions in mind.
The Omron MY4IN 100/110VDC (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 Checklist
The Omron MY4IN 100/110VDC (S) Power Relay follows standard DIN rail mounting practice. Before inserting the unit into its socket or fixing it to the rail, always verify the circuit is fully de-energised. Check that cable cross-sections are appropriate for the load, and after commissioning, mark the panel clearly with the device type and rated voltage for future maintenance reference.
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.
Omron MY4IN 100/110VDC (S): Long-Term Value
Omron’s reputation in automation did not come from clever advertising. It came from decades of components performing reliably in factories, warehouses, and process plants around the world. The MY4IN 100/110VDC (S) Power Relay is a current embodiment of that engineering culture — nothing superfluous, nothing compromised.
Frequently Asked Questions
What is the difference between the Omron MY4IN 100/110VDC (S) and a mechanical contactor?
The Omron MY4IN 100/110VDC (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 100/110VDC (S), it offers faster switching, longer life, and a smaller footprint than a contactor.
How does temperature affect the Omron MY4IN 100/110VDC (S)?
Like all electromechanical devices, performance can be affected at the extremes of the operating temperature range. The Omron MY4IN 100/110VDC (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 100/110VDC (S) units side by side on a DIN rail?
Yes. The Omron MY4IN 100/110VDC (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 100/110VDC (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 100/110VDC (S) to confirm whether this feature is available.
How long is the warranty on the Omron MY4IN 100/110VDC (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.