Challenger BQ320 is a three‑pole, 20‑amp, 240‑volt circuit breaker designed as a plug‑in replacement for Challenger panels. This 3P device is rated for 240V operation and is intended to protect a 20‑amp branch circuit in residential or light commercial electrical setups. It’s marketed as a plug‑in replacement, with cross‑brand compatibility that includes Challenger panels such as PL/PM/PMF and other brands like Westinghouse, GL, GLC, WL, WIB, and Novaline, making it a commonly used option when upgrading aging breakers in compatible panels.
