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Black cylindrical crankcase heater with flexible lockstrap and wire leads

Raychem

Raychem 652255-000 crankcase heater 240V AC 32 W air treatment

SKU CH-DVVH-04QYM

A crankcase heater that activates at 50 degrees Fahrenheit, delivers 32 watts at 240 volts AC and includes a flexible lockstrap with 28-inch pre-stripped leads

  • Product colorBlack
  • Prevents compressor damage by warming crankcase at 50 °F
  • Delivers 32 W of heat at 240 V AC for reliable starts
  • Flexible lockstrap simplifies mounting on curved surfaces
  • 28 in pre-stripped leads speed up wiring installation
  • CCSA US listing confirms compliance with safety standards

Application and purpose

The Raychem 652255-000 is a crankcase heater designed for HVAC and refrigeration compressors. It supplies 32 W at 240V AC to keep oil warm and prevent refrigerant migration during off cycles. The unit activates automatically when ambient temperature falls to 50 degrees F. It is intended for technicians and facility managers who need reliable compressor protection in cold environments.

Build and connections

The heater body is black and measures 4 ft in length with a flexible lockstrap for secure mounting on curved compressor shells. Pre-stripped wire leads extend 28 in for direct connection to 240V AC control circuits. Construction meets CCSA US standards for safety and durability in commercial and industrial air treatment systems.

Upgrade context

This heater replaces failed or missing OEM crankcase heaters on compatible compressors. The jump is worthwhile when a system shows signs of liquid slugging or hard starts after low-temperature shutdowns. It is not suited for compressors requiring a different wattage, voltage or mounting profile.

How it compares

Measured against everything we stock in Air Purification & Protection, at today’s prices. Recalculated every night.

Price $84.99
Pricier than about 80% of the 59 comparable items (median $29.99).

Specifications

Product
Brand nameRAYCHEM
Product colorBlack

Questions about this item

How does the 240 V AC supply limit the crankcase heater's 32 W output?

The heater is rated for 240 V AC and draws 32 W at that voltage; the fixed resistance of the element means power is determined by the supply voltage and cannot exceed 32 W under normal operation.

What physical mounting features does the 4 ft black heater include for a compressor crankcase?

A flexible lockstrap is supplied with the 4 ft heater body to secure it around the crankcase during installation.

What is the correct wiring step for the 28 in pre-stripped leads, and what mistake should be avoided?

Connect the pre-stripped leads directly to the 240 V AC supply using appropriate connectors; the common error is leaving the connection exposed to moisture instead of sealing it for outdoor HVAC use.

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