Overview
The IDEC RY4S-ULCAC110-120V is a plug-in miniature relay engineered for general-purpose industrial applications requiring reliable AC switching. Rated for 120VAC coil operation with a 5A contact current rating, this 4PDT relay delivers consistent performance in control circuits, motor starters, and automation systems. Each box contains 9 relays, providing convenient inventory for maintenance and new installations.
Key Features
- 4PDT (four-pole double-throw) contact configuration for flexible switching logic
- 120VAC coil rating with integrated indicator light and manual check button for quick diagnostics
- 5A maximum contact current rated at 240VAC and 30VDC contact voltage
- Plug-in solder terminal design for easy board mounting and replacement
- RoHS compliant and manufactured to IDEC quality standards
- Operating temperature range –25°C to +40°C
Technical Specifications
Verified specifications for the RY4S-ULCAC110-120V include coil resistance of approximately 4170 ohms, minimum control current of 11 mA at rated voltage, and maximum contact resistance of 50 milliohms. Contact configuration is 4PDT with bifurcated silver-palladium contacts for durability and minimal wear.
Typical Applications
- Industrial control panels and machine automation systems
- HVAC and refrigeration equipment control circuits
- Motor starter interlocking and auxiliary circuits
- Lighting control and power distribution systems
- General-purpose switching in 120VAC-controlled environments
Compatibility & Replacements
Compatible With
- Standard DIN rail and surface-mount relay sockets
- PCB-mount and panel-mount applications with plug-in sockets
- Industrial control systems using 120VAC control circuits
- IDEC relay sockets and accessories
Replaces / Drop-In Replacement For
The RY4S-ULCAC110-120V may replace other IDEC 4PDT relays with equivalent specifications. Verify compatibility with your system integrator before ordering, as contact voltage/current ratings and terminal styles vary across the RY series.
Works With
- AC power control circuits at 120V nominal
- Relay sockets: SY4S series and equivalent IDEC plug-in bases
- Standard industrial wiring and PCB layouts for relay mounting
- Control systems from ABB, Allen-Bradley, Siemens, and other major automation vendors
