Siemens ED43B015 Three-Phase Circuit Breaker 480V

Siemens Sentron ED43B015 is a three‑pole, 15 A molded‑case circuit breaker from the ED4 family, rated for 480 VAC (and 250 VDC) with a thermal/magnetic trip. The ED43B015 uses a non‑interchangeable trip unit and provides an 18 kA short‑circuit current rating at 480 VAC, making it suitable for protecting feeder and motor circuits in industrial control panels. Built for 40 °C ambient conditions, it features line and load side lug terminals and bolt‑on mounting for panel integration. As part of the Sentron ED4 line, the ED43B015 is commonly used to protect three‑phase feeders in switchgear, distribution panels, and machine control applications, helping prevent damage from overloads and short circuits. The part number ED43B015 denotes a 3P, 15A, 480V device with an 18 kAIC rating and a thermal/magnetic trip, designed for use where a compact, reliable protection device is needed in industrial electrical installations. When upgrading protection in an existing 3‑phase distribution network, this ED4 model provides interruption performance consistent with standard industrial panels without requiring extensive panel modification.