Siemens AG 5SY4-210-5 Miniature Circuit Breaker

Siemens AG 5SY4-210-5 miniature circuit breaker (5SY4210-5) is a two-pole protective device rated for 400 V AC with a nominal current of 10 A. It offers a breaking capacity of 10 kA (Icu) and uses a Type A instantaneous trip characteristic, providing reliable short‑circuit protection for 10 A circuits. The unit depth is 70 mm and it is part of the SENTRON 5SY4 family, designed for compact installation in low‑voltage panel assemblies. Typical applications include protecting individual circuits within 400 V AC distribution panels in commercial or light‑industrial environments, where two‑pole protection and defined trip behavior are required.