Universal Commercial Refrigeration Compressor Start Relay
The Universal Commercial Refrigeration Compressor Start Relay is an electromechanical starting device suitable for selected single-phase hermetic compressors used in commercial refrigerators, freezers and cooling equipment.
The relay temporarily energises the compressor start winding when power is applied. As the compressor reaches operating speed and the motor current changes, the relay disconnects the start winding and allows the compressor to continue running through its normal run circuit.
Product Features
- Part type: Commercial refrigeration compressor start relay
- Electromechanical current-operated relay design
- Generic aftermarket replacement component
- Suitable for selected single-phase hermetic compressors
- Commonly used in commercial refrigeration equipment
- Temporarily energises the compressor start winding
- Disconnects the start winding after successful startup
- Designed for use with a correctly rated separate overload protector
- Suitable for replacing burnt, damaged or unreliable start relays
Common Applications
- Commercial display refrigerators
- Beverage and bottle coolers
- Commercial chest freezers
- Under-counter refrigeration cabinets
- Cold rooms and freezer rooms
- Ice machines
- Refrigerated counters
- Selected commercial hermetic compressors
Common Symptoms This Part May Fix
- Compressor humming but not starting
- Compressor starting intermittently
- Compressor requiring several attempts to start
- Overload protector clicking repeatedly
- Start winding not being energised correctly
- Relay buzzing or chattering during startup
- Burnt, pitted or damaged relay contacts
- Visible overheating around the relay terminals
- Compressor starting only after cooling down
- Compressor switching off shortly after startup
Important Diagnostic Note
A compressor that hums or repeatedly trips the overload does not automatically have a faulty start relay. The compressor windings, thermal overload, start capacitor, run capacitor, supply voltage, wiring and refrigeration-system pressures must also be checked.
A mechanically seized or electrically damaged compressor may immediately overload or damage the replacement relay. Test the compressor winding resistance, insulation to earth and starting current before installation.
Package Note
This product is the compressor start relay only unless specifically stated otherwise. The overload protector, start capacitor, run capacitor, terminal cover, wiring and mounting hardware are not included.
Important Fitment Note
This is a universal-style commercial compressor relay and is not suitable for every compressor. Do not select the relay using compressor horsepower or physical appearance alone.
Before ordering, confirm the compressor model, supply voltage, frequency, rated running current, locked-rotor current, winding arrangement, relay pickup and drop-out characteristics, terminal layout and capacitor requirements.
Compare the number and position of the electrical terminals, mounting arrangement and internal relay configuration with the original starting device.
The relay must be used with the correctly rated thermal overload protector. Incorrect selection or wiring may prevent the compressor from starting or cause damage to the compressor windings, capacitors or replacement relay.
Disconnect the refrigeration equipment from the electrical supply before testing or replacing compressor starting components.
Commercial Refrigeration Compressor Start Relay
R130,00
Universal Commercial Refrigeration Compressor Start Relay
The Universal Commercial Refrigeration Compressor Start Relay is an electromechanical starting device suitable for selected single-phase hermetic compressors used in commercial refrigerators, freezers and cooling equipment.
The relay temporarily energises the compressor start winding when power is applied. As the compressor reaches operating speed and the motor current changes, the relay disconnects the start winding and allows the compressor to continue running through its normal run circuit.
Product Features
- Part type: Commercial refrigeration compressor start relay
- Electromechanical current-operated relay design
- Generic aftermarket replacement component
- Suitable for selected single-phase hermetic compressors
- Commonly used in commercial refrigeration equipment
- Temporarily energises the compressor start winding
- Disconnects the start winding after successful startup
- Designed for use with a correctly rated separate overload protector
- Suitable for replacing burnt, damaged or unreliable start relays
Common Applications
- Commercial display refrigerators
- Beverage and bottle coolers
- Commercial chest freezers
- Under-counter refrigeration cabinets
- Cold rooms and freezer rooms
- Ice machines
- Refrigerated counters
- Selected commercial hermetic compressors
Common Symptoms This Part May Fix
- Compressor humming but not starting
- Compressor starting intermittently
- Compressor requiring several attempts to start
- Overload protector clicking repeatedly
- Start winding not being energised correctly
- Relay buzzing or chattering during startup
- Burnt, pitted or damaged relay contacts
- Visible overheating around the relay terminals
- Compressor starting only after cooling down
- Compressor switching off shortly after startup
Important Diagnostic Note
A compressor that hums or repeatedly trips the overload does not automatically have a faulty start relay. The compressor windings, thermal overload, start capacitor, run capacitor, supply voltage, wiring and refrigeration-system pressures must also be checked.
A mechanically seized or electrically damaged compressor may immediately overload or damage the replacement relay. Test the compressor winding resistance, insulation to earth and starting current before installation.
Package Note
This product is the compressor start relay only unless specifically stated otherwise. The overload protector, start capacitor, run capacitor, terminal cover, wiring and mounting hardware are not included.
Important Fitment Note
This is a universal-style commercial compressor relay and is not suitable for every compressor. Do not select the relay using compressor horsepower or physical appearance alone.
Before ordering, confirm the compressor model, supply voltage, frequency, rated running current, locked-rotor current, winding arrangement, relay pickup and drop-out characteristics, terminal layout and capacitor requirements.
Compare the number and position of the electrical terminals, mounting arrangement and internal relay configuration with the original starting device.
The relay must be used with the correctly rated thermal overload protector. Incorrect selection or wiring may prevent the compressor from starting or cause damage to the compressor windings, capacitors or replacement relay.
Disconnect the refrigeration equipment from the electrical supply before testing or replacing compressor starting components.
Unsure about compatibility with your machine? Please confirm compatibility before ordering. Send us your model number and we’ll confirm it for you.
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