Abb cr123c131a Overload Relay Heater Class 20 Nema 1

Product Description

The ABB cr123c131a is a Class 20 overload relay heater element designed for motor protection in industrial control applications. Part of the CR123 Series, this heater element installs inside a compatible overload relay to provide thermal overload protection calibrated for specific current ranges: 1.11 to 1.24 amps on single-phase circuits and 1.05 to 1.15 amps on three-phase circuits. NEMA 1 rated for indoor, non-hazardous environments. Electricians and industrial maintenance technicians install this component as part of motor starter assemblies in panel boards and motor control centers.

This heater element is suited for light-duty industrial and commercial motor control applications where precise thermal overload protection is required at low current ranges. It fits within NEMA-rated motor starters and overload relay assemblies used in manufacturing, HVAC mechanical rooms, pump controls, and conveyor systems. The CR123 Series is a recognized line for replacement heater elements in existing overload relay installations.

Key Features

• Class 20 trip classification for motor overload protection
• Single-phase current range: 1.11 to 1.24 amps
• Three-phase current range: 1.05 to 1.15 amps
• NEMA 1 enclosure rating for indoor, non-hazardous use
• Part of the CR123 Series heater element lineup for consistent replacement compatibility

Compatibility

Designed as an OEM-style replacement heater element for CR123 Series overload relays used in NEMA-rated motor starter assemblies.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC requirements and local codes. De-energize and lockout/tagout the motor control circuit before removing or installing heater elements. Verify the current range stamped on the heater matches the motor full-load amperage as shown on the motor nameplate before placing the assembly back in service.