IDEC Relays RH3B-ULAC24V Relay

As a veteran tech, you know the value of a high-capacity relay that actually fits in a tight control panel. The IDEC RH3B-ULAC24V is a workhorse 3PDT (3 Form C) power relay engineered for industrial HVACR and automation systems where reliability is non-negotiable. Operating on a 24Vac coil, this compact midget power relay handles a full 10Amp switching capacity, making it ideal for managing multiple circuits, motors, and solenoid loads simultaneously. The blade terminals (.187 quick connect) ensure a secure fit into various DIN rail mount sockets or panel-mount bases, allowing for rapid swaps during maintenance calls. This specific model features an integrated LED indicator for immediate visual diagnostics of coil energization, saving you time with a multimeter. With Silver Cadmium Oxide (AgCdO) contacts to minimize arcing and improve longevity, this IDEC RH series relay is the industry standard for 3-pole switching in high-density electrical enclosures.

• High Power Density: Provides 10A contact ratings in a miniature footprint to conserve rail space in complex control cabinets.
• Visual Diagnostics: Built-in status indicator light allows for instant troubleshooting of the 24Vac control circuit.
• Triple Pole Versatility: 3PDT configuration enables the simultaneous switching of three independent circuits or phases.
• Durable Construction: Features high-grade AgCdO contacts for superior arc resistance and long mechanical life in high-cycle applications.
• Universal Compatibility: Industry-standard blade design fits most 11-pin relay sockets used in commercial HVAC and industrial controls.

• Can I use this relay for 24VDC applications? No, this is an AC coil relay specifically designed for 24V 50/60Hz systems. Applying DC voltage to this coil will cause failure.
• What mounting socket is required for the RH3B-ULAC24V? It is compatible with IDEC SH3B-05 or equivalent 11-pin blade-style sockets for DIN rail or surface mounting.
• Does this model include a manual check button? No, this particular "UL" version features the LED indicator but does not include the manual push-to-test button.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.