Weil McLain 510-312-167 Combination Transformer and DPST Relay 120/24V 40VA

The Weil McLain 510-312-167 is a combination transformer and DPST (Double Pole Single Throw) relay designed for residential and commercial heating systems. This unit converts standard 120-volt AC power to 24-volt AC output, providing reliable low-voltage power for control circuits in boilers and hydronic heating equipment.

Key Features:

• Integrated transformer and relay design eliminates the need for separate components
• 40 VA power rating provides sufficient capacity for control circuits and accessories
• DPST relay configuration enables dual circuit switching applications
• Primary voltage: 120V AC, Secondary voltage: 24V AC
• Factory-tested for quality and reliability in HVAC applications
• Direct replacement part for compatible Weil McLain boiler systems

This combination unit simplifies installation and reduces panel space requirements while providing both power conversion and relay switching functionality. Ideal for replacement in existing systems or new installations requiring both transformer and relay capabilities in a single package.