Square D 8501RS44V20 General Purpose Relay 10A 4PDT

Product Description

The SQUARE D 8501RS44V20 is a plug-in electromechanical general purpose relay rated for 10 amps at 250 VAC with a 4PDT (4-pole double-throw) contact configuration. It operates on a 120 VAC coil at 50/60 Hz and supports motor loads up to 1/2 hp at 120 volts or 3/4 hp at 240 volts. The plug-in design allows for quick socket-based installation and field replacement without rewiring. Electricians and controls technicians use this relay in industrial control panels, HVAC equipment, and general-purpose switching applications where a compact, socketed relay is required.

This relay is suited for light commercial and industrial control circuits where reliable electromechanical switching is needed. Common applications include motor control, panel automation, and load switching in HVAC systems, machinery, and building automation equipment. The 4PDT contact form provides four independent switching circuits from a single coil, making it versatile for complex control logic in a compact footprint.

Key Features

• 10 amp contact rating at 250 VAC for robust switching capacity
• 4PDT contact form provides four independent circuits per energization
• 120 VAC coil at 50/60 Hz for compatibility with standard North American and international control voltage
• Motor load rating of 1/2 hp at 120 volts and 3/4 hp at 240 volts
• Plug-in terminal type enables fast socket installation and replacement
• Meets CE, CSA, RoHS, and UL Recognized standards

Compatibility

Designed as an OEM-style plug-in replacement relay for general purpose control panel and HVAC applications requiring a 4PDT, 120 VAC coil relay in a standard socketed footprint.

Installation Notes

Installation should be performed by a licensed electrician or qualified controls technician in accordance with applicable NEC requirements. De-energize the control panel and verify zero voltage at the socket before inserting or removing the relay. Ensure the relay socket matches the 8501RS44V20 pin configuration before installation. Do not exceed the rated contact current or motor load ratings.