Relay 4 Terminal IC102-SU ERP IC102-SU

Refrigerator Compressor Start Relay – ERP

ERP / Supco IC102 solid-state compressor start relay is a 120 VAC, four-terminal PTC relay for compatible refrigeration compressors. It can be used on systems with or without a run capacitor and replaces many two-terminal PTC relay applications. Product specifications Brand: ERP / Supco Part number: IC102 (listing SKU IC102-SU) Voltage: 120 VAC Compressor range: 1/20 to 1/3 horsepower Terminals: 4 Compressor connections: 2 Resistance: 4.7 ohms ±25% Mounting position: universal Replaces: 5303007173, WR7X190, WR7X10011, WR7X5142, WR7X240 Symptoms of failure Compressor will not start, repeated clicking, compressor starts and stops quickly, overload trips, relay shows heat damage, or relay resistance is open or outside specification. Installation instructions Disconnect power and discharge any capacitor using an approved procedure. Photograph the original relay, overload, capacitor, and terminal wiring; verify compressor common, start, and run terminals; install the relay and correctly sized overload securely; reconnect any run capacitor exactly as documented; replace the terminal cover; restore power and monitor starting current and compressor operation. Compatibility and safety Confirm compressor voltage, horsepower, running amperage, terminal pattern, original relay numbers, overload sizing, and run-capacitor arrangement. Compressor terminals carry hazardous voltage; qualified refrigeration service is recommended.

Compatible Part Numbers

• IC102
• IC102-SU
• 5303007173
• WR7X190
• WR7X10011
• WR7X5142
• WR7X240

Key Features

• Product type: Refrigerator Compressor Start Relay
• SKU / MPN: IC102-SU

Fixes These Symptoms

• Compressor does not start
• repeated clicking
• rapid start-stop cycling
• overload trips
• heat-damaged relay
• relay resistance open or outside the 4.7-ohm ±25% specification.

Compatible Brands

• ERP
• GENERIC REPLACEMENT PART

Always verify your complete appliance model number before ordering.

Installation Guidance

Disconnect power and safely discharge capacitors. Document all relay, overload, capacitor, and compressor-terminal wiring. Verify common/start/run terminals and overload sizing, install securely, reconnect the run capacitor exactly as documented, replace the terminal cover, restore power, and monitor starting operation.