IDEC RH2B-UAC220-240V Relay

When your control circuit demands high-capacity switching in a midget-frame footprint, the IDEC RH2B-UAC220-240V is the standard for veteran HVACR technicians and industrial contractors. This compact power relay features a Double Pole Double Throw (DPDT) contact arrangement, engineered specifically to handle 10A resistive loads at 240VAC. By employing silver cadmium oxide (AgCdO) contacts, this unit effectively minimizes voltage arcing and ensures reliable conduction through millions of mechanical cycles. The blade terminal design provides a secure, low-resistance interface compatible with standard DIN rail or panel-mount sockets, making it a direct drop-in for replacing aging midget relays in commercial furnace controls, motor starters, or complex automation panels. With a nominal coil voltage range of 220-240Vac and a fast 20ms response time, this miniature power relay delivers the rapid switching performance required for modern HVACR diagnostics and heavy-duty sequence control.

• 10A Switching Capacity: Delivers the power handling of much larger relays in a space-saving miniature housing.
• Silver Cadmium Oxide Contacts: Designed for high-duty cycles with superior resistance to contact welding and arcing.
• Universal Compatibility: Standard .187-inch blade terminals fit most universal midget sockets, streamlining field service calls.
• Wide Operating Range: Rated for temperatures from -30°C to +70°C, ideal for unconditioned mechanical rooms and control cabinets.
• Industrial Approvals: UL recognized and CSA certified to meet strict code requirements in commercial HVACR installations.

What is the primary application for the RH2B-UAC220-240V?
This relay is typically used for controlling small motors, solenoids, and heating elements in 240V HVACR systems where a DPDT configuration is necessary for simultaneous circuit switching.

Can this relay be mounted directly to a PCB?
No, this specific model features blade terminals for socket mounting. If you require a solder-terminal or PCB-mount version, please verify the terminal type in your panel before procurement.

How do I verify if the coil is energized?
While the RH2B-U standard version does not include an LED, the mechanical movement of the armature can be observed through the transparent dust cover to confirm status during troubleshooting.

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.