Technical Specifications
Parameter Value / Description Explanation
Series / Range System Pro M compact ABB's mainstream, compact distribution equipment series.
Product Type Miniature Circuit Breaker (MCB) Core function: Protection against overload and short circuit.
Model Breakdown C3SS2-10B-20 Code Decoded:
- C3: Product family/design platform.
- SS2: "S" for MCB, "S2" indicates a 2-pole device.
- 10: Breaking Capacity = 10 kA (I<sub>cn</sub>).
- B: Tripping Characteristic = Type B.
- 20: Rated Current = 20 Amperes.
Number of Poles 2 Poles (1+N) "1" = Fully protected phase pole. "N" = Neutral pole (primarily for isolation).
Rated Current (I<sub>n</sub>) 20 A The continuous current the device is designed to carry.
Rated Voltage (U<sub>e</sub>) 230/400V AC Suitable for single-phase (230V) and three-phase (400V) systems.
Tripping Characteristic Type B Trips between 3x and 5x I<sub>n</sub> (60A to 100A). For general use: lighting, sockets, residential circuits.
Breaking Capacity (I<sub>cn</sub>) 10 kA Maximum short-circuit current it can safely interrupt at rated voltage.
Insulation Voltage (U<sub>i</sub>) 500V Rated insulation voltage.
Impulse Withstand Voltage (U<sub>imp</sub>) 4 kV Resistance to voltage surges (e.g., from lightning).
Pollution Degree 2 For normal indoor environments.
Mounting DIN Rail Mounting Standard 35mm top-hat (TS35) DIN rail.
Standards Compliance IEC/EN 60898-1
IEC/EN 60947-2 International and European standards for circuit-breakers.
Terminals Screw Clamp Terminals Suitable for rigid and flexible conductors (check local guidelines for torque).
Electrical Life Typically >10,000 cycles Mechanical and electrical endurance.
Ambient Temperature -25°C to +55°C (for calibration) Operating temperature range.
Storage Temperature -40°C to +70°C
Approximated Dimensions (W x H x D) ~36mm x 78mm x 70mm 2-module width on a DIN rail.
The ABB C3SS2-10B-20 is a 2-pole (1+N) miniature circuit breaker with a Type B tripping characteristic and a 10 kA breaking capacity. It has a 20A rated current and is designed to protect electrical circuits against overloads and short circuits in residential, commercial, and light-industrial applications. The "1+N" configuration means the first pole ("1") provides full protection (overload and short-circuit), while the neutral pole ("N") functions primarily as an isolator or switching pole; it may provide short-circuit protection but typically does not have overload protection. It is designed for easy installation on a standard 35mm top-hat DIN rail.