Description
OMRON MY‑4J
Technical Specifications: Contact configuration 4PDT (four change‑over contacts); rated contact load AC250V 3A, DC24V 3A; coil options multiple AC and DC voltage grades; mechanical service life ≥50 million operations; electrical service life ≥200 000 operations under resistive rated load; coil power consumption approx 0.9W for DC coil type; operating temperature ‑25‑70°C; storage temperature ‑40‑85°C; 14‑pin plug‑in terminal structure; weight approx 35g.
Functional Features: Four groups of independent change‑over contacts, each channel provides NO and NC signal; plug‑in base mounting mode for fast replacement without re‑wiring; compact size saves cabinet installation space; stable electromagnetic‑driven mechanical contact action; wide‑range operating temperature adaptability; multiple coil voltage options for diverse control‑system power conditions.
Application Scenarios: PLC signal amplification output; instrument control circuit switching; automation cabinet auxiliary‑circuit control; small‑size solenoid‑valve drive; signal‑conversion circuits of various industrial equipment.
Performance Parameters: Meets IEC61810‑1 electromechanical‑relay standard; excellent anti‑vibration and anti‑shock capability for cabinet‑mount environment; consistent contact performance under rated load conditions.
Material Composition: Black flame‑retardant plastic housing; copper alloy internal coil winding frame; high‑permeability iron‑core electromagnetic components; silver‑alloy contact pieces; tin‑plated plug‑in pin terminals; internal return spring metal parts.
Structural Features: Rectangular compact plastic housing; 14‑pin plug‑in pin array at bottom; internal electromagnetic coil and armature mechanical assembly; four‑set independent contact groups inside housing; top‑surface indicator window showing coil energization status.
Working Principle: When rated voltage is applied to relay coil, electromagnetic iron‑core generates magnetic force, pulling armature to drive contact spring assembly. Each set of contacts completes switching action between normally‑closed and normally‑open states. After coil power cuts off, armature resets by spring force, and all contacts revert to original static state.
Installation Requirements: Install matched 14‑pin relay socket on DIN rail or control‑board mounting holes; insert MY‑4J relay body fully into socket and ensure pins are fully seated; separate relay‑socket wiring of coil circuit and load circuit; keep adequate ventilation clearance around relay body inside cabinet.
Usage Notes: Never exceed rated contact voltage and current value; add surge‑absorbing components for inductive‑load driving scenarios; select coil voltage matching control‑system power supply; avoid continuous over‑temperature operating environment; replace relay periodically under high‑frequency switching‑cycle conditions.
