Resideo - Honeywell Home R8845U1003 Universal Hydronic Switching Relay

Universal Hydronic Switching Relay from Resideo—Honeywell Home (R8845U1003) delivers reliable control for hydronic heating systems. This AC-operated relay combines SPST contacts with a built-in transformer and enclosure for a compact, ready-to-install solution.

Equipped to work with standard 24V programmable controls, it features a 120 VAC contact rating and a full-load current of 7/44.4 A, while the 24 VAC coil operates at 60 Hz. The unit includes an integral transformer (24 VAC secondary), a rugged enclosure, and a #8 captivated screw terminal for secure wiring, all designed for surface mounting.

• Type: AC operated, SPST contact configuration
• Electrical rating: 120 VAC, 7/44.4 A full load
• Coil: 24 VAC at 60 Hz
• Transformer: Integral 24 VAC secondary
• Terminals: #8 Captivated Screw Terminal
• Mounting: Surface mounting with enclosure
• Dimensions: 4-7/16" W x 3-1/2" D x 6-1/4" H
• Environment: -20°F to 120°F; 0–90% RH

Includes integral transformer and enclosure, making this a plug-and-play solution for reliable hydronic control.