Siemens ED42B090 Molded Case Circuit Breaker 90 Amp

Siemens ED42B090 is a Sentron ED4-series molded‑case circuit breaker, a two‑pole device rated for 90 A at up to 480 V AC, designed to protect feeders in low‑voltage distribution panels and switchgear. It features a thermal‑magnetic trip and an 18 kA interrupting rating at 480 V AC, with load‑side lug terminals available in the ED42B090L configuration for direct termination; the unit also supports a 250 V DC rating on the load side. Sized to the ED4 frame, its dimensions align with typical panelboard footprints, roughly 17 in long by 8 in wide by 6 in high, making it a drop‑in fit for standard enclosures and equipment that require 90 A protection and 480 V supply.