Omron MY3N 220/240VAC Miniature Power Relay Technical Guide
The Omron MY3N 220/240VAC miniature power relay is a plug-in industrial control relay developed for systems that use 220 VAC or 240 VAC control voltage. As part of the Omron MY relay family, this model is known for dependable switching performance, compact dimensions, and practical maintenance features suitable for industrial automation environments.
Relay Construction and Contact Configuration
This relay features a 3PDT contact arrangement with three independent changeover contacts. The design allows one energized coil to control multiple circuits simultaneously, making the relay suitable for control logic, interlocking, signal distribution, and auxiliary switching tasks.
The relay body includes a transparent protective cover and an integrated LED indicator that helps technicians monitor relay operation visually during maintenance and troubleshooting.
Electrical Performance
The Omron MY3N 220/240VAC miniature power relay supports resistive contact loads up to 5 A at 220 VAC and 5 A at 24 VDC. Inductive applications require lower ratings because switching electromagnetic loads produces higher electrical stress on relay contacts.
The relay coil is designed for 220/240 VAC operation. Typical coil current values include approximately 4.8 mA at 220 VAC 50 Hz, 4.2 mA at 220 VAC 60 Hz, 5.3 mA at 240 VAC 50 Hz, and 4.6 mA at 240 VAC 60 Hz. Coil resistance is approximately 18,790 ohms.
Installation and Socket Compatibility
The relay is compatible with Omron 11-pin socket families including PYF11A, PY11, PY11QN, and PY11QN2. Socket mounting supports easier relay replacement and minimizes downtime because the control wiring remains connected during maintenance procedures.
This maintenance-friendly design is especially valuable in industrial facilities where system availability and rapid servicing are operational priorities.
Common Applications
The Omron MY3N 220/240VAC miniature power relay is widely used in automation cabinets, process control systems, HVAC panels, industrial machinery, pump stations, fan controls, alarm circuits, and auxiliary control logic. The three changeover contacts provide flexibility when multiple outputs must be controlled simultaneously.
For additional industrial relay references, visit Omron automation information.
Main Advantages
- Reliable high-voltage AC coil operation
- Compact industrial relay body
- 3PDT contact flexibility
- Integrated LED operation indicator
- Transparent protective housing
- Plug-in maintenance convenience
- Wide socket compatibility
Omron MY3N 220/240VAC FAQ
What is the Omron MY3N 220/240VAC miniature power relay used for?
This relay is commonly used in industrial systems with 220 VAC or 240 VAC control voltage, including automation panels, machine controls, process equipment, and HVAC applications.
Omron MY3N 220/240VAC What does the 3PDT contact configuration provide?
The 3PDT arrangement provides three separate changeover contacts, allowing several independent circuits to be switched from one relay coil signal.
Does the relay include a status indicator?
Yes. The integrated LED indicator allows technicians to verify relay energization quickly during operation or troubleshooting.
Why are socket-mounted relays popular in industry?
Socket mounting simplifies relay replacement and reduces maintenance downtime because technicians do not need to disconnect control wiring.
Can this relay switch inductive loads?
Yes, but inductive loads require reduced current ratings and proper circuit protection because of the higher electrical stress created during switching.