Siemens Q27000S01 NN 70A 240V 2P Circuit Breaker

Siemens Q27000S01 NN is a 2‑pole molded‑case circuit breaker from the QP/MP family rated for 70 A at 120/240 VAC. It uses a thermal‑magnetic trip and delivers a 10 kA short‑circuit current rating at 240 V, making it suitable for protecting larger residential branch circuits and feeders in standard panelboards. The S01 variant includes a factory‑installed 120 V shunt trip for remote or interlock control, and it employs Insta Wire terminals for quick, secure terminations. This unit is UL 489 listed and designed for plug‑in mounting in compatible Siemens load centers and panelboards that accept QP/MP breakers. Typical applications include protection of 70 A circuits in homes or small offices where 120/240 V distribution is used, and where remote trip capability is beneficial. As a member of Siemens’ QP/MP lineup, it can often replace ITE/QP breakers in panels that support 2P 70 A devices and 120/240 V operation, provided the panel’s ratings align with the device’s specifications.