S203-D16 - ABB - Products - Easy Semiconductor Technology (Hong Kong) Limited 易擇半導體科技(香港)有限公司

S203-D16

The ABB S203-D16 is a compact 3-pole miniature circuit breaker designed for overload and short-circuit protection in low-voltage electrical distribution systems. It features a D-type tripping characteristic, making it suitable for circuits with high inrush currents such as motors, transformers, and inductive loads. The breaker is part of the ABB System pro M compact S200 series, engineered for DIN-rail mounting in industrial, commercial, and residential control panels.

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Technical Parameters Electrical Ratings Rated Current (In): 16 A Number of Poles: 3P (three-pole) Tripping Characteristic: D-curve (high inrush tolerance) Rated Operational Voltage (Ue): Up to 400 V AC (IEC 60898-1) Up to 440 V AC (IEC 60947-2) Rated Insulation Voltage (Ui): up to 440 V Rated Frequency: 50 / 60 Hz Rated Short-Circuit Breaking Capacity (Icn / Icu): ~6 kA at 400 V AC (short-circuit interrupt level) 20 kA at 230 V AC ultimate breaking capacity Rated Service Short-Circuit Capacity: ~7.5 kA at 400 V AC Energy Limiting Class: 3 Overvoltage Category: III Pollution Degree: 3 Mechanical & Connection Mounting: DIN-rail (35 mm) Terminal Type: Screw terminals Contact Position Indication: Red “ON” / Green “OFF” Modular Width: 52.5 mm (3 modules) Approx. Dimensions (W × H × D): 52.5 × 88 × 69 mm Approx. Weight: ~0.375 kg Electrical Endurance: ~20,000 AC cycles Mechanical Endurance: ~20,000 cycles Connecting Capacity: Solid conductor: 0.75 – 35 mm² Stranded conductor: 0.75 – 35 mm² Flexible with ferrule: 0.75 – 25 mm² Tightening Torque: ~2.8 N·m Environmental Operating Ambient Temperature: approximately –25 °C to +55 °C Standards & Compliance Designed for compliance with international norms for miniature circuit breakers suitable for residential, commercial, and industrial use