Enhance the performance and protection of your CR101 starters with the ABB CR123H171B Overload Relay Heater. Designed as a crucial component for NEMA contactors and starter accessories, this heater ensures reliable operation and safeguards your motor from overcurrent conditions. Its compact design and straightforward integration make it an essential upgrade for industrial applications..The ABB CR123H171B is an overload relay heater designed for use with CR101 starters. It is part of ABB's NEMA Contactor & Starter Accessories line. The product has a package level of 1 piece with dimensions of 1 inch in width, 1.75 inches in depth, and 0.5 inches in height, with a gross weight of 0.025 lb. It is classified under eClass V11.1 as 27370905 and ETIM 6, 7, and 8 as EC001037 (Motor starter/Motor starter combination).