Abb CR123C180B Overload Heater Element

Product Description

The ABB CR123C180B is a heater element designed for use with overload relays in motor control and protection applications. Heater elements generate a calibrated amount of heat in proportion to motor current, allowing the overload relay to trip and protect the motor from sustained overcurrent conditions. This part is installed by licensed electricians and industrial maintenance technicians working on motor control centers, panelboards, and combination starters. The CR123C180B is sized to match a specific current range and must be selected carefully to match the motor full-load amperage and service factor.

Heater elements like the CR123C180B are used in residential, commercial, and light industrial motor control applications wherever thermal overload relays are employed to protect single-phase or three-phase motors. Typical installations include HVAC equipment, pump panels, conveyor controls, and other motor-driven systems that rely on bimetallic or eutectic thermal overload protection. Selection is based on motor nameplate full-load amps and ambient temperature correction factors per the overload relay manufacturer's sizing tables.

Key Features

• Calibrated heater element sized to a specific current range for accurate overload tripping
• Designed for use with compatible thermal overload relay blocks
• Provides motor protection against sustained overcurrent and locked-rotor conditions
• Compact form factor fits directly into the overload relay heater pocket

Compatibility

Designed as an OEM-style replacement heater element for use with compatible ABB thermal overload relay assemblies. Verify the current range and relay series compatibility using the ABB heater selection table before installation.

Installation Notes

Installation should be performed by a qualified electrician in accordance with NEC requirements. Disconnect and lock out all power to the motor control circuit before removing or installing heater elements. Confirm the heater element current rating matches the motor full-load amperage and ambient temperature derating requirements before energizing the circuit. Do not operate the overload relay without the correct heater element installed, as improper sizing will compromise motor protection.

Technical Specifications

• UPC: 78316630882

Standard Information

• Brand: ABB
• Manufacturer Part Number: CR123C180B