Siemens NSB BQ2B070 Miniature Circuit Breaker

The Siemens BQ2B070 is a two-pole molded-case circuit breaker rated for 70 A at 120/240 VAC, designed to protect branch circuits in electrical panelboards. It delivers thermal-magnetic protection with a 10 kA interrupt rating, suitable for use in commercial and light industrial distribution where short-circuit currents may occur. The device ships with load-side lugs and supports Lug-In/Lug-Out connections, enabling secure, code‑compliant terminations in Siemens BQ panel systems. As part of the BQ family, the BQ2B070 provides common-tripping protection for 120/240 V circuits and is used to safeguard feeders and branch circuits in appropriate Siemens panel installations.