Siemens Industry, Inc. BQCH3B070 Circuit Breaker

Siemens BQCH3B070 is a 3-pole molded‑case circuit breaker rated at 70 A for 277/480 VAC three‑phase service, engineered to protect feeders and equipment within commercial and industrial power distribution networks by interrupting fault currents and preventing damage to downstream devices. This specific BQCH‑series device carries a 14 kA interrupting rating at 480 V, meaning it can interrupt higher fault currents typical of larger installations, and it adheres to Siemens' BQCH design standards for reliable operation in demanding environments. As a 3‑pole unit, it is intended for three‑phase protection in switchgear, panelboards, and distribution panels where high-line voltage protection is required, aligning with Siemens' lineage of molded‑case breakers. Catalog designation BQCH3B070 identifies a 70-amp, 277/480‑volt, three‑pole breaker from Siemens Industry, Inc., a component commonly used where robust overcurrent protection is needed in modern electrical installations.