IDEC Relays RH4B-UAC24 Relay

The IDEC RH4B-UAC24 is a professional-grade 4PDT compact power relay engineered for high-density control panels and industrial HVACR systems. As a core component of the IDEC RH Series, this 10A miniature relay features a 24VAC coil designed for reliable switching in demanding automation environments. Its 4 Form C contact configuration (four-pole double-throw) provides maximum versatility for controlling multiple circuits simultaneously, making it a standard choice for sequencing and interlocking applications. The blade terminals ensure a secure, low-resistance connection when paired with SH4B-05C DIN rail sockets, while the silver cadmium oxide contacts are specifically utilized to minimize voltage arcing and mechanical wear throughout the life of the unit.

Key Benefits for Technicians:

• High Switching Capacity: Handles up to 10 Amps at 110/220VAC, providing robust performance in a midget-sized footprint.
• Compact Midget Design: Reduces required rail space in crowded electrical enclosures without sacrificing switching power.
• Enhanced Durability: Features AgCdO contacts and a mechanical life rated for millions of operations to ensure long-term system stability.
• Universal Compatibility: Standard terminal arrangement allows for direct integration into existing relay sockets from IDEC and other major manufacturers.
• Industrial Standards: Fully UL Recognized and CSA Certified, meeting the rigorous safety requirements for commercial and industrial installations.

Common Questions:

What is the difference between the 4PDT configuration and standard DPDT relays?
A 4PDT relay like the RH4B-UAC24 provides four independent sets of changeover contacts, allowing you to manage twice the amount of circuit paths compared to a standard DPDT model within a single housing.

Will this relay fit into my existing SH series socket?
Yes, this blade terminal relay is specifically designed to seat into SH4B-05 or SH4B-05C base sockets, which are common in many HVACR control cabinets.

Can I use this relay for DC switching applications?
While optimized for 24VAC control circuits, the contacts are rated for 30VDC at 10A, making it suitable for hybrid AC/DC control logic where common voltage rails are utilized.

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.