Abb CR123C440B Overload Heater Element

Product Description

The ABB CR123C440B is an overload heater element designed for use with thermal overload relays in motor protection applications. Heater elements generate a calibrated amount of heat proportional to motor current draw, allowing the relay's bimetal strip to trip and disconnect the motor before damage from sustained overload occurs. This part is installed by licensed electricians and industrial maintenance technicians as part of a motor starter or contactor assembly.

Overload heater elements like the CR123C440B are used in residential, commercial, and light industrial motor control applications. They are selected based on the full-load amperage rating of the motor being protected, then installed into a matching thermal overload relay body. Common applications include pump motors, fan motors, conveyor drives, and other single- or three-phase induction motor circuits.

Key Features

• Calibrated thermal response for accurate overload protection at rated motor current
• Drop-in heater element format for compatible ABB thermal overload relay bodies
• Protects motors from sustained overcurrent conditions that cause winding damage
• Suitable for commercial and light industrial motor control panels

Compatibility

Designed as an OEM-style replacement heater element for compatible ABB thermal overload relay assemblies. Verify relay body compatibility and motor full-load amperage rating before installation.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the National Electrical Code (NEC). De-energize and lock out the motor control panel before removing or installing any heater element. Select the correct heater element based on the motor nameplate full-load amps and the relay manufacturer's selection chart. Do not operate the relay with a mismatched or missing heater element.

Technical Specifications

• UPC: 78316630902

Standard Information

• Brand: ABB
• Manufacturer Part Number: CR123C440B