IDEC Relays RH3B-UAC24V Relay

The IDEC RH3B-UAC24V is a heavy-duty 3PDT (3 Pole Double Throw) power relay designed for high-density control panels and HVACR logic circuits. This compact midget relay features a 24VAC coil and provides a reliable 10A switching capacity, making it a staple for contractors handling industrial machinery and motor load switching. Its blade-style terminals ensure a secure fit into standard socket mounting configurations, allowing for rapid field replacement without re-wiring the entire circuit. Built with silver cadmium oxide (AgCdO) contacts, this relay minimizes contact resistance and handles resistive loads up to 110VAC/30VDC with ease. The RH series is engineered for a broad operating temperature range of -30°C to +70°C, ensuring stability in demanding mechanical rooms. Whether you are managing three-pole switching for fan motors or multi-stage cooling components, this non-latching relay offers the mechanical durability needed for millions of operations.

Key Benefits for Contractors:

• Space-Saving Footprint: The compact midget size allows for more relays per DIN rail in tight electrical enclosures.
• High Current Rating: Supports a 10-Amp contact rating, providing a robust solution for inductive and resistive loads.
• Universal Compatibility: Standard blade terminal arrangement fits common RH series sockets (like the SH3B-05) for seamless retrofitting.
• Rugged Construction: Features high dielectric strength (2,000VAC) between contacts and coil to prevent internal arcing.
• Efficient Troubleshooting: Clear housing allows for quick visual inspection of contact status during system diagnostics.

Common Questions & Support:

• What is the coil resistance for this 24VAC model? The nominal coil resistance is approximately 103 ohms, which is critical for verifying coil integrity with a multimeter.
• Can I use this for 3-phase switching? While it is a 3-pole relay, verify that the 10A rating meets the specific amperage requirements of your 3-phase motor or load.
• Does this include a built-in LED? This specific model (RH3B-UAC24V) is the standard version without an integrated LED indicator.

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.