Must Have Square D Q1330 – 30A 3 Pole Molded Case Circuit Breaker

Built for commercial applications, this 30A, three-pole circuit breaker delivers essential overcurrent protection. It belongs to the legacy Square D Q1 series. Designed with a plug-on mounting style, it installs into older Q1 and NQO panelboards. It helps maintain existing systems, though it has been replaced by the QO330. The unit features a 10kAIC rating at 240VAC and accepts 14-8 AWG wiring. A Visi-Trip window helps electricians quickly identify tripped circuits during outages.