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S202-B25

The ABB S202‑B25 is a compact 2‑pole miniature circuit breaker from the ABB System pro M (S200) series, engineered to provide reliable overload and short‑circuit protection in low‑voltage electrical distribution systems. It combines a thermal trip for extended overload protection and a magnetic trip for fast response to short circuits.

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Technical Parameters Electrical Ratings Rated Current (In): 25 A Number of Poles: 2P (two poles) Tripping Curve: B‑curve (for low inrush loads) Rated Operational Voltage (Ue): Up to 400 V AC (IEC 60898‑1) Up to 440 V AC (IEC 60947‑2) Rated Insulation Voltage (Ui): 440 V Rated Frequency: 50 / 60 Hz Rated Short‑Circuit Breaking Capacity (Icn): 10 kA at 230/400 V AC Rated Ultimate Breaking Capacity (Icu): up to 15 kA Current Limiting Class: 3 Overvoltage Category: III Rated Impulse Withstand Voltage (Uimp): 4 kV Operational Voltage Range: AC/DC 12 V to AC 440 V (typical) DC Interrupting Capability: Up to 125 V DC (depending on certification) Mechanical & Installation Mounting: Standard DIN‑rail (35 mm) Terminal Type: Screw terminals Tightening Torque: Approx. 2 N·m Mechanical Endurance: ~20,000 operations Electrical Endurance: ~20,000 AC cycles Contact Position Indication: ON (red) / OFF (green) Housing Material: High‑quality insulation (light grey) Environmental Ambient Operating Temperature: approx. −25 °C to +55 °C Pollution Degree: 3 Protection Rating: IP20 (installed within enclosure) Mounting Position: Any