The Coates heater contactor is designed for compatible heater applications where dependable high-load electrical switching is needed. A contactor like this is useful because it helps control the delivery of power to the heater circuit, supporting safe and reliable operation of the system.This 2-pole, 50 amp unit with a 220 volt coil is especially useful when the original contactor is stuck, chattering, burnt, or no longer switching power consistently. Replacing it can help restore cleaner electrical control and improve confidence in heater performance.The 21000100 is a practical replacement for compatible Coates heater systems that need renewed switching support and dependable electrical operation. Coates heater contactor 2-pole, 50A design with 220V coil Designed for dependable heater power switching Useful when the original contactor is failing or worn Supports cleaner and more reliable heater control