Description
Omron LY4N-J 14-Pin Electromagnetic Power Relay (4PDT) The Omron LY4N-J is an industry-standard, heavy-duty electromagnetic power relay designed for sequential control systems and high-capacity power switching. Featuring a 4PDT (4 Pole Double Throw) configuration, this relay allows a single control signal to manage four independent electrical circuits simultaneously. The “N” designation indicates the inclusion of a built-in LED indicator for easy visual troubleshooting, making it a favorite for industrial automation panels and machinery maintenance. Key Features Contact Configuration: 4PDT (4 Form C: 4 Normally Open / 4 Normally Closed contacts). High Switching Capacity: Capable of handling substantial loads, typically rated for 10A at 240V AC or 10A at 28V DC. Built-In LED Indicator: Integrated neon/LED status light illuminates when the coil is energized, allowing field technicians to quickly verify control circuit functionality. Pin Design: 14 flat plug-in terminal blades designed for robust contact and high current handling compared to smaller miniature relays. Dielectric Strength: Offers exceptional insulation resistance, easily withstanding up to 2,000V AC between coil and contacts to prevent high-voltage arc-over. Compatibility Guide The LY4N-J is heavily used across commercial automation, manufacturing plants, and heavy-duty mechanical control systems. 1. Compatible Control Voltages (Coil Types) While the form factor is identical, you must match your system’s control voltage to the exact coil rating stamped on the relay chassis. Common variants include: AC 220V / 240V Coils (Most Common): Designed for standard industrial control transformers and mains voltage pilot circuits. DC 24V Coils: Ideal for interfacing directly with Programmable Logic Controllers (PLCs) and standard industrial DC power supplies. DC 12V / AC 110V Coils: Utilized in specialty automotive, marine, or legacy machinery wiring networks. 2. Compatible Base Sockets (Mounting) To avoid manual soldering or direct wiring to the blades, this plug-in relay interfaces with standard DIN-rail mount sockets: PTF14A / PTF14A-E Sockets: The standard 14-pin matching screw-terminal track base. It allows installers to mount the hardware to a standard 35mm DIN rail and use a flathead screwdriver to terminate utility lines. 3. Compatible Systems & Applications Industrial Automation & PLCs: Acts as an intermediary high-power switch to protect delicate, low-amperage PLC digital outputs from heavy motor loads. Motor Control Circuits: Controls small fractional-horsepower three-phase motors, exhaust fans, and industrial pumps. Elevator & Lift Systems: Frequently deployed in control logic banks for elevators, hoists, and automated cargo gates. Heating & Ventilation (HVAC): Manages heavy heating elements, commercial AC compressors, and industrial dampers.
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