The Omron MY4N-J 240VAC 5A 240VAC 28VDC 14pin Electromagnetic Relay is an industrial-grade miniature 4-Pole Double-Throw (4PDT) power relay engineered for sequence control, electrical isolation, automated switching panels, and industrial machinery. Featuring a high-voltage 220V–240V AC operating coil, it is equipped with an integrated mechanical flag indicator and a bright LED status lamp ("N" designation) that confirms coil energization in real time. Designed with standard 14-pin blade-type plug-in terminals, it interfaces seamlessly with DIN-rail mount sockets (such as the PYF14A series) or direct through-hole PCB/panel mount sockets, providing dependable multi-circuit control for resistive and inductive industrial loads.

Specifications

• Model / Series: Omron MY4N-J (Miniature Power Relay Series)
• Contact Configuration: 4PDT (4 Form C / 4 Pole Double Throw: 4 × NO, 4 × NC, 4 × COM)
• Number of Pins: 14 Blade/Spade Terminals (Standard industrial plug-in footprint)
• Nominal Coil Voltage: 220 V to 240 V AC (50/60 Hz)
• Coil Operating Voltage Range: 80% to 110% of rated voltage
• Must-Operate Voltage: ≤ 80% of rated coil voltage
• Must-Release Voltage: ≥ 30% of rated coil voltage
• Coil Power Consumption: Approx. 0.9 VA to 1.2 VA (at 60 Hz)
• Rated Contact Switching Voltage: 250 V AC / 30 V DC (Max. 250 V AC / 125 V DC)
• Rated Contact Current (Resistive Load): 5 A at 250 V AC / 5 A at 28 V–30 V DC
• Maximum Switching Power: 1250 VA (AC) / 150 W (DC)
• Contact Material: Silver Alloy / Gold-Clad Silver Alloy (Ag / Ag-Alloy)
• Contact Resistance: ≤ 50 mΩ (Initial at 1 A, 5 V DC)
• Operate / Response Time: ≤ 20 ms max.
• Release / Reset Time: ≤ 20 ms max.
• Dielectric Withstanding Voltage:
  • Between Coil and Contacts: 2,000 V AC (50/60 Hz for 1 min)
  • Between Open Contacts: 1,000 V AC (50/60 Hz for 1 min)
  • Between Adjacent Contact Poles: 2,000 V AC (50/60 Hz for 1 min)
• Insulation Resistance: ≥ 100 MΩ (at 500 V DC)
• Status Indication: Built-in LED Operational Indicator & Mechanical Contact Flag Indicator
• Mechanical Endurance: ≥ 50,000,000 operations min. (at 18,000 operations/hr)
• Electrical Endurance: ≥ 100,000 operations min. (at rated resistive load, 1,800 operations/hr)
• Operating Ambient Temperature: -55°C to +70°C (Without condensation or icing)
• Compatible Socket Base: Standard 14-pin DIN Rail Sockets (e.g., PYF14A, PYF14A-E, PY14)
• Dimensions: Approx. 27.5 mm × 21.5 mm × 35.5 mm (L × W × H excluding terminal pins)
• Net Weight: Approx. 35 g

Features

• Dual Status Indication ("N" Designation): Features both an internal LED that lights up upon coil energization and a bright mechanical indicator flag showing physical armature displacement at a glance.
• High-Density 4PDT Switching: Four isolated double-throw circuits permit simultaneous control of 4 separate loads or multi-phase line switching from a single 240VAC control trigger.
• Standardized 14-Pin Plug-in Architecture: Mates with widespread PYF14A-series DIN-rail sockets, enabling tool-less relay swap-outs and rapid field replacement without disconnecting terminal wiring.
• Environmentally Sealed Transparent Case: Heavy-duty clear polycarbonate enclosure protects contact surfaces from ambient dust, airborne particulates, and accidental contact while allowing visual inspection of internal mechanics.
• High Dielectric Isolation: Certified 2,000V AC isolation between coil and contacts provides robust safety separation between high-voltage power loads and secondary automation controls.

Common Applications

• Industrial Control Panels & Switchgear: Distributing control signals, interlocking safety circuits, and routing mains power inside factory automation cabinets.
• HVAC & Building Automation: Switching blower fans, damper actuators, compressor contactors, and condensate pumps driven by 240V utility line commands.
• Motor Starter Circuits & Interlocks: Forward/reverse motor directional interlocking, auxiliary emergency-stop safety disconnects, and status feedback loops.
• Packaging & Processing Machinery: Sequencing multi-stage solenoids, heating element bands, and conveyor drive systems in automated production lines.
• Lighting & Power Distribution: Controlling multi-zone commercial lighting banks and isolated auxiliary branch power circuits.

Usage Tips

• Coil Supply Requirements:
  • Ensure the coil is powered with dedicated 220V to 240V AC (50/60 Hz).
  • Do not power this AC coil with DC voltage; applying continuous DC will cause excessive current draw, severe coil overheating, and permanent burnout due to the absence of AC inductive reactance.
• Inductive Load De-Rating:
  • While rated for 5 A with purely resistive loads (cos φ = 1), de-rate the allowable switching current to 2 A to 3 A when driving inductive loads like small single-phase motors, solenoids, or magnetic contactors (cos φ  = 0.4, L/R = 7 ms).
  • For high-inductance AC circuits, install an external RC snubber circuit across the contacts to suppress back-EMF arcing and extend contact life.
• Socket Pairing & Wiring:
  • Always pair with an industrial 14-pin DIN-rail socket (such as the PYF14A) using the integrated metal retaining clip to lock the relay securely against machine vibration.
  • Coil terminals correspond to Pin 13 and Pin 14. Pins 9, 10, 11, and 12 serve as the Common (COM) poles, while Pins 1, 2, 3, 4 represent Normally Closed (NC) and Pins 5, 6, 7, 8 represent Normally Open (NO).
• Mechanical Installation Orientation: Mount sockets vertically where possible to facilitate natural heat dissipation around the enclosure and promote optimal gravity-assisted armature drop-out.
• Field Testing Precautions: Avoid forcefully manually prying the internal contact leaf arms with screwdrivers; use designated test-button levers (if available on the socket bracket) or check electrical continuity across terminals using a multimeter.