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Cutler Hammer-Eaton C440A1A045SDD Electronic Overload Relay C440

Rating:
5 5 2
2  Reviews Add Your Review
Special Price $529.86 Regular Price $588.15
In stock
SKU
C440A1A045SDD

The Cutler-Hammer Eaton C440A1A045SDD C440 is an electronic overload relay that is specifically developed to protect HVAC system motors against electrical overloads. It operates by continuously observing the motor's current flow. The circuit breaker is immediately tripped by the relay, which stops the current flow, if the current exceeds a predefined safe limit for a specified period of time. This safety precaution aids in avoiding electrical fires, motor burnout, and damage to other equipment. The electrical current passing through the motor is continuously monitored by the C440 relay.Applications for the C440 relay in HVAC systems include ventilation systems, heat pumps, and air conditioners. The C440 relay enhances the longevity, operational effectiveness, and overall system reliability of these systems by protecting the motors.

 

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HVAC Controls & Electrical, Relays, Overload Relays
Manufacturer:
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Manufacturer Name: Cutler Hammer-Eaton
Product Number: C440A1A045SDD
OEM Part Number: C440A1A045SDD
Product Description: C440 Elec.Overload Relay
Weight:0.78lbs/353.8g

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Product Questions (2)
Customer Questions
What maintenance is required for the Cutler Hammer-Eaton C440A1A045SDD Overload Relay?

Regularly inspect wiring connections and terminal tightness to ensure stable operation. Clean dust buildup and check for overheating signs on the relay body. Periodically verify overload settings and calibration accuracy to match motor load requirements.

What are common issues with the Cutler Hammer-Eaton C440A1A045SDD Overload Relay?

  • Nuisance tripping from incorrect overload settings.
  • Loose or faulty wiring causing intermittent operation failures.
  • Miscalibration leading to inaccurate current protection response.
  • Overheating due to Low ventilation or excessive load conditions.

Installation Steps

Step 1: Isolate power supply and lockout/tagout before installation.

Step 2: Mount overload relay securely on compatible contactor.

Step 3: Connect control and motor terminals per wiring diagram.

Step 4: Set current and trip parameters using dial/interface per specifications.

Step 5: Restore power and test overload trip function and verify operation.