Abb cr123c118a Overload Relay Heater Class 20 Nema

Product Description

The ABB cr123c118a is a Class 20 overload relay heater element designed for motor protection in industrial control applications. Rated for 1.06 to 1.10 amps in 1-phase two-heater configurations and 0.94 to 1.04 amps in 3-phase three-heater configurations, this heater element provides thermal overload protection sized to motor full-load amperage. It carries a standard trip classification of Class 20 and is sold in a standard package of three heaters per pack, making it suitable for a complete 3-phase overload relay assembly. Licensed electricians and industrial control technicians are the primary installers of this component.

The cr123c118a is compatible with panel-mounting configurations and is used across NEMA sizes 0, 1, M-0, and M-1. It is designed for use with CR124C series overload relays, CR1062R and CR1062S series manual starters, and CR340 and CR341 series pumping panels. These applications span light commercial and industrial motor control installations where thermal overload protection is required at the relay heater level.

Key Features

• Class 20 standard trip type for motor overload protection
• 1-phase rating: 1.06 to 1.10 amps (two-heater unit)
• 3-phase rating: 0.94 to 1.04 amps (three-heater unit)
• Sold in a standard pack of three heaters for complete phase coverage
• Panel-mounting configuration for NEMA sizes 0, 1, M-0, and M-1
• Part of the ABB CR123 Series heater element lineup

Compatibility

Designed for use with CR124C series overload relays, CR1062R and CR1062S series manual starters, and CR340 and CR341 series pumping panels in panel-mounting installations at NEMA sizes 0, 1, M-0, and M-1.

Installation Notes

Installation should be performed by a licensed electrician familiar with motor control equipment and applicable NEC requirements. De-energize and lock out the control panel before removing or installing heater elements. Verify that the selected heater element amperage range matches the motor nameplate full-load amperage before installation. Install all three heaters when servicing a 3-phase overload relay to maintain balanced thermal protection across all phases.