Schneider Electric QOB2100 Bolt-on Circuit Breaker

Schneider Electric's Square D QOB2100 is a 2-pole, 100 A bolt-on mini circuit breaker built for QO panelboards. It is rated for 120/240 VAC and provides thermal-magnetic overcurrent protection with a 10 kA interrupt rating, protecting feeders and branch circuits against short circuits and overloads. The bolt-on design requires a compatible QOB mounting base, consistent with the QOB bolt-on family, and is typical for use in Square D QO load centers and other compatible panelboards in residential or light commercial installations. The QOB2100 also supports conductor ranges up to 4 AWG to 2/0 AWG copper or aluminum, per common retailer specifications, making it suitable for higher-capacity branch circuits. In any installation, this unit's 2-pole construction ensures simultaneous protection of both hot legs, and its 100 A rating makes it a suitable upgrade or replacement when upgrading service panels or feeders that demand higher protection, while maintaining standard 120/240 VAC operation and a clearly labeled amp rating for code compliance.