Siemens 5SX21C2 Circuit Breaker 1 Pole 2 Amp 230/400 Vac

Siemens 5SX21C2 is a compact, single‑pole circuit breaker designed to protect 230/400 V AC circuits in control panels and distribution boards. With a 2 A rated current and a Type C thermal‑magnetic trip characteristic, it provides reliable overcurrent protection for common loads while offering a 6 kA short‑circuit breaking capacity. The device is intended for DIN rail mounting and uses screw‑terminal wiring, with an enclosure footprint listed around 18 × 62 × 90 mm. The 5SX21C2 designation is widely listed as 5SX21‑C2 (1‑pole, 2 A, 230/400 V AC), aligning with Siemens catalogs and multiple third‑party suppliers. This makes it suitable for protecting individual feeders or control circuits in space‑constrained commercial panels where verified, single‑phase protection is required.