Siemens ED43B030 Three-Phase 3P 30A Circuit Breaker

Siemens ED43B030 is a three‑pole molded‑case circuit breaker rated for 30 A at up to 480 V AC, part of the Siemens ED (Sentron) low‑voltage MCCB family. It delivers thermal‑magnetic protection with an 18 kA interrupting capacity at 480 V, enabling reliable interruption of faults in distribution panels and feeders. The model is available in variants such as ED43B030BP (bolt‑on terminals) and ED43B030L (lug terminals), providing installation flexibility to match different panel configurations. As a compact, low‑voltage molded‑case breaker, the ED43B030 is designed for automatic overload and short‑circuit protection in commercial and industrial electrical assemblies, incorporating long‑time and instantaneous trip elements to respond to varying fault conditions. This 3P, 30A device is commonly used to protect feeders, auxiliary circuits, and control circuits within 480 V systems in panelboards and switchgear, where a reliable, code‑compliant protective device is required.