Siemens Q3100H QPH Molded Case Circuit Breaker

Siemens Q3100H QPH Molded Case Circuit Breaker is a three‑pole, 100 A protective device in the QPH frame rated for 240 V AC, designed for distribution panels and switchgear in commercial and light‑industrial installations. It delivers a 22 kA interrupt rating at 240 V, providing robust short‑circuit protection for feeders and circuit branches. This plug‑in breaker uses a thermal‑magnetic trip unit and operates as a common‑trip device to simultaneously protect all three phases; Insta‑Wire wiring is available on certain variants for faster connections. The QPH designation places it in Siemens' QP/MP family, commonly used in Siemens load centers and compatible panel systems. Typical uses include mains feeders and branch circuits within load centers or switchgear where precise overcurrent protection is required, with catalog entries such as Q3100H00S01 reflecting variants that include Insta‑Wire options. With 240 V operation and a 100 A rating, it is suited for protection of moderate distribution circuits in commercial spaces or light industrial environments, aligning with Siemens’ documentation of 3‑pole, 240 VAC, 22 kAIC QPH molded‑case breakers.