Siemens ES Series S4242B3225 is an indoor 3‑phase, 4‑wire load center rated for 225 A with a 42‑space, 42‑circuit configuration, built in a 42‑inch tall NEMA Type 1 enclosure for scalable power distribution. It is designed for 120/208/240 V AC service and uses an aluminum bus, with the model configured as a main‑breaker unit (not convertible to main lug) and a 10 kAIC interrupting rating on the included main breaker. Ideal for commercial or multi‑load applications, this 225 A main breaker, 42‑space panel provides ample room for branch circuits while maintaining robust protection and serviceability in indoor environments.
