ABB 1SDA071459R1

The E1.2B 1250 air circuit breaker is constructed with a fixed design and is suitable for AC applications, specifically featuring the Ekip Hi-Touch LSIG release. It has a rated current of 1250 A and operates at a rated voltage of 690 V AC. The device integrates four auxiliary contacts and is designed to handle electrical durability with a life expectancy of 8000 cycles at Ue ≤ 440 V and 6500 cycles at Ue between 500 and 690 V, with a mechanical durability rating of 20000 cycles.

This model supports a comprehensive range of short-circuit breaking capacities, with an ultimate short-circuit breaking capacity (Icu) of 42 kA across various voltages, ensuring reliable protection for transformers, generators, and installations. The rated impulse withstand voltage is 12 kV according to IEC 60947-2 standards, and it maintains a short-circuit performance level of B. The terminal connection type is bolt, allowing for secure installation, and the recommended tightening torque is 45 N·m.

For environmental compliance, the product adheres to RoHS directives and has an EPD available, showcasing a recyclability rate of 77.6% in accordance with EN45555 standards. The product is classified under ETIM 9 as a power circuit-breaker for installation protection. The compact dimensions of 280 mm width, 296 mm height, and 183 mm depth make it suitable for various applications while maintaining a net weight of 16 kg.