Siemens 3RV2021-4BA10 Motor Protection Circuit Breaker

Siemens SIRIUS 3RV2021-4BA10 Motor Protection Circuit Breaker is a compact, three‑pole S0‑size motor protector designed for 220–690 VAC environments, combining overload and short‑circuit protection in a single device. It features an adjustable A‑release from 13 to 20 A and a fixed N‑release of 260 A for instantaneous protection, with Class 10 thermal protection and AC‑3 Duty rating, making it suitable for motor protection in on‑panel drives and centralized control schemes. Wiring uses screw terminals, and the unit is intended for DIN‑rail mounting, offering standard switching capacity within the Sirius 3RV2 family for space‑conscious electrical panels.