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Nidec-Secop 117U4129 Starting Relay W/Klixon 115V

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Special Price $20.03 Regular Price $26.04
In stock
SKU
117U4129
The Nidec-Secop 117U4129 Starting Relay is an electromechanical control element, which is applied to air conditioning and heat pump HVAC systems to allow start of compressor motors. It is made up of a starting relay and a thermal-protected Klaxon switch to momentarily connect the start winding of the compressor to 115V, and then to disconnect it when the motor has attained operating speed. It is fitted in the electrical compartment of the outdoor unit, where it is connected to the compressor terminals using specified spade or lead connections.
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HVAC Controls & Electrical, Relays,
Manufacturer:
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Manufacturer Name: Nidec-Secop
Product Number: 117U4129
OEM Part Number: 117U4129
Product Description: Starting Relay W/ Klixon 115V
Weight:0.11lbs/49.9g

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Product Questions (2)
Customer Questions
What maintenance is required for the Nidec-Secop 117U4129 Starting Relay?

Inspect the relay for overheating, pitting, or burnt contacts during routine checks. Ensure secure wiring connections and proper mounting alignment. Test relay response to confirm accurate motor startup operation. Proper maintenance helps prevent compressor starting failures and electrical faults.

What are common issues with the Nidec-Secop 117U4129 Starting Relay?

  • Failure to connect the compressor motor at startup.
  • Burnt or welded contacts are causing stuck operation.
  • Overheating leading to intermittent performance.
  • Electrical connection faults are causing startup delay.

Installation Steps

Step 1: Disconnect power to unit and verify no voltage is present.

Step 2: Remove old starting relay and inspect terminals for burn or damage.

Step 3: Install new relay onto compressor pins aligning correct orientation and secure firmly.

Step 4: Reconnect wiring according to diagram and ensure klixon overload is seated properly.

Step 5: Restore power, test startup operation, and monitor for overheating.