100 Amp Circuit Breakers

100 amp breakers feed subpanels and serve as the main breaker on 100 amp services. Most are 2-pole 240V plug-in breakers; some are main breakers that bolt or plug into a specific load center.

We stock about 70 100 amp breakers from Square D, Eaton, Siemens, GE and Leviton.

Match your panel first. A breaker only fits the panel brand and line it is made for: Square D QO (QO2100) or Homeline (HOM2100), Eaton BR (BR2100), Siemens (Q2100) or GE (THQL21100). Check the label inside your panel door, or send us a photo and we will match it.

Replacing the main breaker? See main circuit breakers and match the model listed on your panel label.

72 Products