Siemens 5SX21-C5 1-Pole Circuit Breaker, 230-400V 0.5Amp

Siemens 5SX21‑C5 is a miniature circuit breaker designed for reliable protection of low‑current electrical circuits, featuring a C‑curve trip characteristic suitable for moderate inrush current applications in industrial and commercial systems. Manufacturer: Siemens Country of Manufacture: Germany Product Type: Miniature Circuit Breaker (MCB) Model: 5SX21‑C5 Number of Poles: 1‑Pole Rated Current: 0.5 A Rated Voltage: 230–400 VAC (commonly marked 277 VAC on unit) Trip Curve: C‑Curve (magnetic trip for moderate inrush currents) Frequency: 50/60 Hz Breaking Capacity: Typically 6 kA (series standard, may vary by exact version) Mounting Type: DIN rail mount Connection Type: Screw terminal connections Terminal Capacity: Suitable for solid and stranded conductors (typical small cross-section range) Housing Material: Insulated thermoplastic enclosure Actuator Type: Toggle switch Color: White housing with black toggle Standards Compliance: IEC 60898 / EN 60898 Certifications: CE marked, UL/CSA (series dependent) Protection Type: Overload and short‑circuit protection Application Category: Residential, commercial, and industrial control circuits Mechanical Life: High durability switching cycles (typical >10,000 operations) Electrical Life: Designed for repeated protection operations Operating Temperature: Typically −5°C to +40°C ambient Storage Temperature: Typically −25°C to +55°C Installation Position: Any (recommended vertical for optimal performance) Application Type: Circuit protection device Typical Use: Control panels, lighting circuits, low current distribution systems Construction: Compact modular breaker with internal thermal‑magnetic trip mechanism Approximate Dimensions: 90 mm height, 17.5 mm width, 70–75 mm depth Approximate Weight: 0.1–0.2 kg