Square D QOB230 2 Pole Bolt On Circuit Breaker

The Square D QOB230 is a two-pole bolt-on miniature circuit breaker from Square D’s QO family, delivering reliable overcurrent protection for 120/240 V circuits. With a 30 A rating, it protects branch circuits against overloads and short circuits while enabling manual switching through its two-pole handle. The unit mounts via a bolt-on connection to compatible panels, providing a secure, permanent installation designed for QO load centers and panelboards. Rated for a 10 kA interrupt capacity, it can safely interrupt fault currents up to 10,000 A, helping protect wiring and devices downstream. This model is commonly used to protect circuits in residential and light commercial distributions where bolt-on breakers are specified by the panel design, offering the same electrical characteristics as other QO breakers but in a bolt-on form factor.