Square D 8501KPDR12V56 Dpdt Octal Plug-in Relay 48 Vdc

Product Description

The SQUARE D 8501KPDR12V56 is an octal plug-in general purpose relay designed for control circuit switching in industrial and commercial electrical systems. It features a DPDT (double-pole, double-throw) contact configuration with an 8-pin octal base, allowing fast installation and field replacement without rewiring. The coil operates at 48 VDC, and the contacts are rated at 10 amps at 250 VAC. Motor load ratings are 1 hp at 277 volts and 1/3 hp at 120 volts, with a coil power draw of 3 VA. Licensed electricians and control panel technicians are the primary installers of this relay type.

This relay is suited for general-purpose control applications in residential, commercial, and light industrial environments. Typical uses include HVAC control panels, motor starters, lighting contactors, and programmable logic controller (PLC) output circuits where a compact, socketed relay is required. The octal base style allows it to seat in standard 8-pin octal relay sockets. Its small footprint makes it a practical choice for crowded panel layouts or DIN-rail mounted socket assemblies.

Key Features

• DPDT contact form provides two independent switched circuits per relay
• 48 VDC coil voltage suits low-voltage DC control circuits
• 10-amp contact rating at 250 VAC supports resistive and motor loads
• Octal 8-pin plug-in base enables tool-free swap in compatible relay sockets
• 3 VA coil power draw reduces heat load in densely populated panels
• Meets CE, CSA, UL 508, IEC 61984, and RoHS requirements

Compatibility

Designed as an OEM-style plug-in replacement for standard 8-pin octal general purpose relay sockets in control panel and HVAC applications.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC requirements and any applicable local codes. De-energize and lock out the control panel before removing or inserting the relay. Seat the relay firmly into the octal socket until it is fully engaged to ensure proper contact alignment. Verify coil voltage and contact ratings against the circuit requirements before energizing.