Siemens Q310000S01U is a Q Series molded‑case circuit breaker rated for 120/240 VAC and 100 A, with a 10 kA interrupting capacity at 240 VAC. This three‑pole unit uses a thermal‑magnetic trip and includes a 120 V shunt trip option for remote shutdown. It features Insta Wire terminal connections for faster wiring and is designed for plug‑in mounting in Siemens QP/MP panelboards, with UL 489 listing. Common applications include protecting feeders and branch circuits in commercial electrical distribution where reliable overcurrent protection and rapid trip are essential.
