Omron MY4IN 48VDC (S) Miniature Power Relay
The Omron MY4IN 48VDC (S) miniature power relay is a 4-pole plug-in relay for DC control circuits. It is designed for control panels where reliable switching, visual operation feedback, and fast service replacement are important. With its 48 VDC coil, this relay fits automation systems that use higher DC control voltages for improved noise immunity and long cable runs.
Technical Overview
The relay features a 48 VDC coil, 18.8 mA coil current, approximately 2,560 ohms coil resistance, LED operation indication, plug-in terminals, and a 4PDT contact form. Its contact material is listed as gold-clad silver alloy in Omron industrial data, and the contact rated load includes 250 VAC 3 A resistive and 30 VDC 3 A resistive values for the listed MY4IN DC48 (S) model.
Why 48 VDC Matters
A 48 VDC control supply is common in industrial cabinets, communication equipment, battery-backed systems, and certain process control installations. Compared with lower DC voltages, it can reduce current for the same coil power class and may perform better where cable distance and voltage drop must be managed carefully.
Installation Notes
The socket-mounted design supports quick replacement. Engineers should confirm socket compatibility, polarity, load characteristics, ambient temperature, and safety requirements. DC coils with indicators must be wired with correct polarity. Contact protection is recommended when switching inductive loads, especially coils and solenoids.
Best-Fit Applications
This relay is suitable for auxiliary control, remote signaling, PLC output isolation, control cabinet retrofits, and multi-circuit switching. For more product family context, review Omron relay information.
FAQ
What is Omron MY4IN 48VDC (S) used for?
It is used to switch multiple control circuits from a 48 VDC signal in automation panels, machine controls, and auxiliary circuits.
Omron MY4IN 48VDC (S) What is the coil current?
The MY4IN DC48 (S) model is listed with 18.8 mA coil current.
Omron MY4IN 48VDC (S) Does it include LED indication?
Yes. The relay includes an LED operation indicator for easier troubleshooting.
What does the latching lever do?
The latching lever supports manual operation during testing. It should only be used under safe, approved maintenance procedures.
Can this relay replace another 48 VDC MY relay?
It may, but the contact form, socket, coil polarity, indicator type, and load rating must match the existing application.