Square D 8501RS44V14 General Purpose Relay 10A 4PDT 24V

Product Description

The SQUARE D 8501RS44V14 is a plug-in electromechanical general purpose relay rated for 10 amps at 250 VAC with a 4PDT contact configuration. It operates on a 24 VAC coil at 50/60 Hz, making it suitable for control circuits in HVAC, industrial automation, and commercial electrical systems. The plug-in terminal design allows for fast swapping without rewiring the base socket. Licensed electricians and HVAC controls technicians are the primary installers. At 0.16 pounds and a compact footprint of 1.9 inches by 1.7 inches by 1.2 inches, it fits in standard relay sockets used in panel and enclosure applications.

This relay is commonly used in low-voltage control wiring for HVAC equipment, building automation panels, and light industrial machinery. The 4PDT configuration provides four independent switched circuits from a single coil, useful in sequencing, interlock, and switching applications. The 24 VAC coil voltage is standard across a wide range of commercial HVAC control boards, fan coil units, and packaged rooftop equipment. It is also applicable in motor control applications, rated at 1/2 hp at 120 volts and 3/4 hp at 240 volts for direct motor loads.

Key Features

• 4PDT contact form provides four independent switched circuits per coil activation
• Plug-in terminal type allows tool-free relay replacement without disturbing socket wiring
• 24 VAC coil at 50/60 Hz compatible with standard HVAC low-voltage control circuits
• 10-amp contact rating at 250 VAC supports resistive and moderate motor loads
• Motor load ratings: 1/2 hp at 120 volts and 3/4 hp at 240 volts
• Certified to CE, CSA, and UL Recognized standards; RoHS compliant

Compatibility

Designed as an OEM-style plug-in replacement for general purpose relay sockets used in HVAC control panels, building automation enclosures, and light industrial control applications requiring a 24 VAC 4PDT relay.

Installation Notes

Installation should be performed by a licensed electrician or qualified HVAC controls technician in accordance with the NEC and applicable local codes. De-energize the control panel and verify the circuit is safe before removing or inserting the relay. Confirm the socket base matches the 4PDT plug-in footprint before installing. Do not exceed the rated amperage or motor horsepower for the contact configuration in use.