Schneider Electric’s Square D QHB120N miniature circuit breaker is a 1-pole, 20-amp protection device designed for 120/240-volt circuits. It carries a 65 kA interrupt rating and uses bolt-on mounting for secure installation in compatible Square D QO/QHB panels. As a member of the QHB/QO family, this 20 A MCB fits single-slot, 1-pole applications that require reliable overcurrent protection for branch circuits within residential and light commercial panel infrastructure.
