Omron MY4N 48VDC (S) Miniature Power Relay Technical Guide
The Omron MY4N 48VDC (S) miniature power relay is a 4-pole plug-in relay designed for DC control systems requiring a 48 VDC coil. It is commonly used in industrial control panels, automation equipment, signal switching systems, and machine interfaces where several circuits need to be controlled from one relay coil.
The relay uses a 48 VDC coil rated at approximately 17.6 mA, with a coil resistance of about 2725 ohms and power consumption around 0.9 W. It includes an LED operation indicator, a closed cover structure, plug-in terminals, and a 4PDT contact arrangement. These features make it practical for service teams and system builders who need both compact installation and clear status feedback.
Contact and Switching Performance
The contact system uses gold-clad silver alloy and supports 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 contact voltage is listed as 250 VAC or 125 VDC. The relay also has a contact resistance specification of 50 milliohms maximum under defined test conditions.
Response and Durability
The operating time is rated at 20 ms maximum, and the reset time is also rated at 20 ms maximum. Mechanical endurance reaches 100 million operations minimum under specified conditions, while electrical endurance is listed at 200,000 operations minimum at rated load. These values make the relay suitable for repeatable control duties when the load is correctly matched to the relay rating.
Best-Fit Applications
The Omron MY4N 48VDC (S) miniature power relay is especially useful in DC-based industrial systems, battery-backed control panels, telecom-related control circuits, automation machines, and interface panels. The 48 VDC coil is often selected where higher DC control voltage helps reduce current draw compared with lower-voltage relay coils.
Why Socket Mounting Helps
Socket mounting improves serviceability. When a relay reaches the end of its useful life or needs to be tested, technicians can remove it without disturbing field wiring. This is especially important in process equipment, production machinery, and control cabinets where wiring accuracy affects uptime.
Omron MY4N 48VDC (S) For more Omron component information, visit Omron automation components.
Omron MY4N 48VDC (S) FAQ
What is the Omron MY4N 48VDC (S) miniature power relay?
It is a 48 VDC coil, 4PDT plug-in relay used for switching multiple control or load circuits in industrial electrical systems.
What is the coil current?
The rated coil current is approximately 17.6 mA at 48 VDC.
What contact form does it use?
It uses a 4PDT contact form, also known as four-pole double-throw or 4 Form C.
Is the relay suitable for inductive loads?
Yes, but inductive loads must remain within the specified inductive ratings. Suppression components may be required depending on the circuit.
Why choose 48 VDC instead of 24 VDC?
48 VDC may be preferred in systems already standardized around that control voltage, especially where lower coil current is useful or where equipment architecture requires 48 VDC compatibility.