IDEC Relays RH1B-UAC120V Relay

The IDEC RH1B-UAC120V relay is a heavy-duty compact power relay designed for industrial and HVACR control circuits where panel space is at a premium. This SPDT relay (Single Pole Double Throw) features a robust 10A contact rating, making it a reliable choice for cycling fans, dampers, and auxiliary loads in commercial climate systems. Built with silver cadmium oxide contacts, it maintains a low contact resistance of 50m? maximum, ensuring minimal voltage drop across the circuit. The 120VAC coil is optimized for standard building automation and equipment power, with a dropout voltage rating of at least 30% to prevent nuisance chattering during minor voltage fluctuations.

For technicians working in tight enclosures, the RH series miniature relay utilizes a midget "ice cube" footprint compatible with standard SH1B-05 sockets and DIN rail mounting systems. The blade terminals (0.187-inch quick-connect) provide a secure mechanical connection capable of withstanding the high-vibration environment of a mechanical room. This plug-in relay is a versatile replacement for 120V control applications requiring a high switching capacity in a space-saving housing.

• 10-Amp Switching Capacity: Reliable handling of inductive and resistive loads in a compact frame.
• Space-Saving Geometry: Midget size allows for high-density mounting on DIN rails or internal panels.
• Robust Blade Terminals: Standard .187 quick-connect terminals ensure stable contact and easy field replacement.
• High-Performance Contacts: Silver cadmium oxide construction for extended electrical life cycles in HVACR control systems.
• Broad Compatibility: Fits industry-standard SH series sockets for rapid integration into existing control logic.

• What socket is required for the RH1B-UAC120V? This relay is designed for use with the IDEC SH1B-05 (standard) or SH1B-05C (finger-safe) DIN rail/surface mount sockets.
• Can this relay replace a standard DPDT relay? Only if the application only utilizes a single pole. As an SPDT midget relay, it provides one set of changeover contacts (1 Form C).
• Is this suitable for 24V control circuits? No, this specific model requires a 120V AC coil voltage for operation. Using a 24V signal will not provide enough magnetic force to pull in the contacts.

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.