Compressor Protection Overload Manufacturer,Supplier and Exporter in India
Product Code : EL-RACLE-12850
Jlab Export is a leading Compressor Protection Overload Manufacturer,and suppliers in India
An overload protector guards a compressor motor against too much current or too much heat. It sits in the motor supply, usually pressed against the compressor shell, and opens the circuit when it trips. This one is a flat, universal type rated 1/3 to 1/6 hp. Most protectors of this kind reset by themselves once they have cooled.
Specifications
| Type | Flat, universal |
| Rating | 1/3 to 1/6 hp |
| Before fitting | Unplug the refrigerator or switch off the circuit breaker, and wear gloves |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Practicals on Compressor Protection
Students wire the overload into a starting circuit with the current-type Compressor Start Relay. Two compressors in its rating band suit the exercise: the 1/6 hp Compressor and the 1/3 hp Compressor. Before power goes on, they check with a Digital Multimeter that the cold overload reads closed.
A teacher-led demonstration then shows a nuisance trip. The compressor is stopped and restarted at once, before the pressures have equalised. It stalls, the overload opens after a few seconds and the class times how long it takes to reset. The 400A Clamp Meter Compact on the common lead shows the high stalled current that caused the trip.
Frequently Asked Questions
How do I test an overload protector?
Disconnect it and let it cool to room temperature. Measure across its terminals: a reading close to zero ohms means the contacts are closed and the part is good. An open reading on a cold overload means it has failed.
Why does the compressor click on and off every few minutes?
That is the overload tripping and resetting. Common causes are a faulty start relay or capacitor, low supply voltage, a dirty condenser or a high head pressure. A weak overload can also trip on a sound compressor, so check the other causes before replacing it.
Which compressors does this overload fit?
It is a flat, universal type for 1/3 to 1/6 hp compressors. Match it to the compressor rating and check that it seats flat against the shell, so it senses the shell temperature as well as the current.
What precautions apply when replacing it?
Unplug the refrigerator or switch off the circuit breaker, and wear gloves to protect your hands. The compressor shell and terminals can be hot just after running, so let the unit stand for a while before you start work.
Other Parts for Compressor Circuits
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Last updated: 5 November 2026
