Siemens NGB3B090 is a three-pole molded-case circuit breaker rated for 90 A at 600Y/347 VAC, designed to protect three‑phase feeders in commercial and light‑industrial distribution panels. It offers thermal‑magnetic trip protection with an interrupt rating of 14 kA at 600Y/347 VAC (and 25 kA at 480 VAC), and ships with load lugs included for straightforward installation. As part of the Siemens NGB family, this unit provides a compact, high‑amp protection solution for panelboards and MCCBs in systems powered by 347/600 VAC. Common applications include feeders and distribution circuits in commercial facilities powered by 347/600 VAC networks.
