Technical Data
Parameter Specification
Product Type Miniature Circuit Breaker (MCB)
Manufacturer Series ABB BK (Basic) / BKM
Order Code / Article Number BK15291
Number of Poles 3P (3 protected poles)
Rated Operational Current (Iₙ) 1 A
Rated Voltage (Uₑ) 230/400 V AC, 50/60 Hz
Tripping Characteristic Type B
Utilization Category AC: A (for general resistive/lighting loads)
Breaking Capacity (Icn) BK: 6 kA (at 400V AC, to EN 60898)
BKM: 10 kA (at 400V AC, to EN 60898)
Insulation Voltage (Ui) 500 V
Impulse Withstand Voltage (Uimp) 4 kV
Rated Frequency 50/60 Hz
Terminals Suitable for solid and stranded copper conductors (up to 16 mm²). Torque settings as per manufacturer's instructions.
Mechanical Life ≥ 20,000 operating cycles (on-load)
Electrical Life ≥ 10,000 operating cycles (at Iₙ)
Standards Compliance IEC/EN 60898-1 (Standard for circuit-breakers for overcurrent protection for household and similar installations). May also conform to IEC/EN 60947-2 for industrial use.
Mounting DIN Rail Mounting (EN 60715 - 35 mm symmetrical rail)
Ambient Temperature -25°C to +55°C (for calibration)
Package Unit Usually sold as a single unit (1 piece).
The ABB BK15291 is a 3-pole, 1 A miniature circuit breaker from the BK/BKM Series. It is designed for domestic and commercial installations to provide reliable protection against overloads and short circuits.