Square D QO21001021 – 100A 2 Pole Miniature Circuit Breaker Budget

Part of the QO series, the Square D QO2100-1021 combines reliable 100A thermal-magnetic protection with a factory-installed shunt trip accessory. This allows the breaker to be tripped remotely via a control signal, making it ideal for emergency shutdowns or automated control systems in commercial facilities. The plug-on unit requires three panel spaces and mounts into QO load centers and NQ panelboards. It features a 10kAIC rating at 120/240VAC and accepts 4 to 2/0 AWG wiring.