Siemens Sentron ED41B020 is a 1-pole, 20 A molded‑case circuit breaker designed for protection of 120/277 VAC circuits and 125 VDC sources in commercial distribution panels. Part of the ED4 family and identified by its blue label, it provides thermal‑magnetic trip protection with a 22 kA interrupt rating at 277 V, making it suitable for branch‑circuit protection in light commercial installations. Load‑side connections support conductors in the 14–10 AWG range, and the unit is intended for panel‑mount service in typical low‑voltage panel boards (up to 40°C ambient).
