Coleman 3030-3781 Defrost Relay – 24V Heat Pump Control Relay Replacement

Product Description

The Coleman 3030-3781 Defrost Relay is a replacement control relay used in compatible Coleman heat pump systems. The relay uses a 24V AC coil and switches electrical loads used by the heat pump’s control and defrost system.

This is an older-style Essex control relay with multiple quick-connect terminals and a metal mounting bracket. It is intended as a direct replacement where the original Coleman 3030-3781 / Essex 3030-378 relay is specified.

Because Coleman used several similar-looking relays with different internal configurations, customers should verify the part number, terminal arrangement, coil voltage, and equipment model before ordering.

Key Features

• Brand: Coleman / Essex
• Coleman Part Number: 3030-3781
• Relay marking: 3030-378
• Heat pump defrost/control relay
• Coil Voltage: 24V AC, 50/60 Hz
• Multiple quick-connect spade terminals
• Metal mounting bracket
• Replacement for compatible Coleman heat pump systems
• Motor load rating:
  • 10 FLA / 30 LRA at 125V AC, 60 Hz
  • 2 FLA / 15 LRA at 250V AC, 60 Hz
• Pilot/control rating:
  • 125 VA at 125/250V AC, 60 Hz
  • 5A at 125V AC
  • 3A at 250V AC
• Designed for HVAC control applications
• Verify existing relay and wiring configuration before replacement