ABB Compact S201-B25 1-Pole Miniature Circuit Breaker, 25A, 6kA, Type B

The ABB Compact S201-B25 is a premium 1-pole miniature circuit breaker rated at 25 A. With a 6 kA breaking capacity and B-curve tripping, it provides reliable protection for lighting and general-purpose circuits in residential and commercial installations.

Overview

This MCB from the renowned ABB System pro M Compact range combines robust construction with user-friendly operation. Its compact 1-module design saves space in distribution boards, while the snap-in DIN rail mounting ensures quick and secure installation. The device meets international standards, guaranteeing safety and performance in diverse electrical environments.

What stands out

• 6 kA rated short-circuit breaking capacity (Icn)
• B-curve tripping characteristic for fast response to short circuits
• Energy limiting class 3 minimizes thermal stress on downstream equipment
• Screw terminals with ample clamping capacity for conductors up to 25 mm² flexible
• High electrical endurance (10,000 cycles) and mechanical endurance (20,000 cycles)
• Clear ON/OFF indication with a stable toggle lever

Technical details

• Number of poles: 1
• Rated current (In): 25 A
• Tripping characteristic: B
• Rated operational voltage (Ue): 230 V AC
• Rated insulation voltage (Ui): 440 V
• Rated impulse withstand voltage (Uimp): 4 kV
• Rated short-circuit breaking capacity (Icn): 6 kA
• Frequency: 50/60 Hz
• Energy limiting class: 3
• Electrical endurance: 10,000 AC cycles
• Mechanical endurance: 20,000 cycles
• Terminal type: Screw terminals
• Terminal capacity (flexible): up to 25 mm²
• Terminal capacity (rigid): up to 35 mm²
• Mounting type: DIN rail (35 mm)
• Degree of protection: IP20 (terminals), IP40 (enclosure)
• Ambient air temperature: -25 °C to +55 °C
• Standards: IEC/EN 60898-1

Our verdict

For electricians seeking dependable overcurrent protection, the ABB S201-B25 delivers proven performance and build quality. Its high breaking capacity and clear trip indication make it a trusted choice for modern electrical installations.