Brand New Siemens E43B090 – 90A 3 Pole Molded Case Circuit Breaker

Operating with a 40C ambient calibration, this 90A molded case breaker provides consistent commercial power distribution. The three-pole configuration utilizes a non-interchangeable trip unit for precise LI protection. Installation is straightforward across Siemens Sentron panelboards, SB switchboards, and older ITE F-Series enclosures. When maintenance requires a modern equivalent, the ED43B090 serves as the official replacement. Tested to deliver 18 kAIC at 480VAC, the device is HACR rated.