Challenger CH1020 Circuit Breaker

Challenger CH1020 is a 1-pole, 20-amp molded-case circuit breaker rated for 277 V operation, designed to protect single‑phase branch circuits in compatible Challenger panelboards. This bolt-on, CH-series device delivers a 14 kA interrupting capacity at 277 V, enabling rapid fault clearance on common lighting and equipment circuits in commercial buildings. The molded‑case construction provides durability and a compact footprint for CH panel installations, while the bolt-on mounting offers a secure, field-friendly installation method. As part of the Type CH family, the CH1020 protects circuits up to 20 A and is commonly chosen for 277‑V single‑pole protection in office, retail, and other commercial facilities that rely on Challenger panel systems. When diagnosing or upgrading CH panels, CH1020 offers a direct, compatible option for safeguarding a 20‑amp, 277‑V branch circuit with reliable performance across typical load profiles.