Omron MY4N 12VDC (S) General Purpose Relay Guide
The Omron MY4N 12VDC (S) general purpose relay is a compact 4PDT plug-in relay designed for DC control systems, automation panels, and multi-contact switching circuits. It is part of Omron’s MY series, a proven relay family widely used in industrial control and machine automation.
Technical Overview
This relay uses a 12 VDC coil with a rated current of approximately 72.7 mA and a coil resistance of about 165 ohms. It includes an LED operation indicator, plug-in terminal structure, closed cover protection, and socket mounting. The contact form is 4PDT, meaning four changeover contacts are controlled by a single coil.
The relay is designed to operate at 80 percent or less of rated coil voltage and release at 10 percent or more for DC coil versions. Power consumption is approximately 0.9 W, making it suitable for DC control circuits where predictable coil load is important.
Contact Performance
The Omron MY4N 12VDC (S) features single contacts made from gold-clad silver alloy. Typical rated loads include 220 VAC at 3 A for resistive loads, 220 VAC at 0.8 A for inductive loads, 24 VDC at 3 A for resistive loads, and 24 VDC at 1.5 A for inductive loads. Maximum switching power is commonly listed as 660 VA for resistive AC loads and 72 W for resistive DC loads.
Where This Relay Fits Best
A 12 VDC relay coil is commonly found in compact control circuits, battery-backed systems, machine interfaces, low-voltage automation devices, and signal control panels. The MY4N format is especially useful where several isolated circuits must be switched from one DC command signal.
Practical Engineering Value
In real panel work, visibility and serviceability matter. The LED indicator helps identify coil status without additional test equipment. The plug-in socket design allows the relay to be replaced quickly during maintenance. This can reduce downtime and make troubleshooting more efficient.
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Common Applications
The Omron MY4N 12VDC (S) is suitable for PLC output expansion, alarm circuits, auxiliary control switching, relay logic panels, battery-powered control systems, signal isolation, and machine status circuits. Its 4PDT contact structure gives designers flexibility when one control signal must influence multiple circuit paths.
FAQ
What is the Omron MY4N 12VDC (S)?
It is a 12 VDC coil general purpose relay with 4PDT contacts, plug-in terminals, and an LED operation indicator.
What is the rated coil current?
The rated coil current is approximately 72.7 mA.
What is the coil resistance?
The coil resistance is approximately 165 ohms.
Can this relay be used with 12 VAC?
No. This version is designed for 12 VDC. A 12 VAC control circuit requires the AC coil version.
What is the main advantage of 4PDT contacts?
Four changeover contacts allow one relay to switch several independent control paths at the same time.
Is this relay suitable for industrial control panels?
Yes. Its plug-in construction, indicator, and MY series socket compatibility make it suitable for many control panel applications.