It is a 4-pole, 4-protected-pole device (neutral protection set at 1 x Ir, 4D) rated for AC networks at 50/60 Hz. The TM-D trip provides L (thermal overload) and I (magnetic short-circuit) protection in one compact package. Rated 100 A at 50 °C, this breaker is sized for distribution and feeder circuits in commercial and industrial panelboards. The 40 kA Icu at 240 V AC (25 kA at 415 V, 20 kA at 440 V, 15 kA at 500 V) gives it solid fault-interrupting capability for most low-voltage distribution applications — enough headroom to coordinate with downstream branch breakers without cascading failure. Pollution degree 3 (IEC 60664-1) means it handles conductive dust and humidity typical of industrial enclosures without tracking.
Front-front connections — line and load both terminate on the front face, which simplifies busbar routing in a panel but means you need clearance in front for cable entry. Dimensions: 161 mm H × 140 mm W × 86 mm D. Connection pitch is 35 mm per pole, standard for 4-pole MCCB busbar systems. IP40 front face (finger-safe), IK07 impact rating. Suitable for enclosure mounting where the operator interface is behind a door. Relative humidity 0–95 % non-condensing. Overvoltage category III — suitable for fixed-installation distribution boards.
Durability and endurance
Mechanical endurance: 40,000 operations. Electrical endurance varies by load: 40,000 cycles at 440 V at half rated current (In/2), 20,000 cycles at full rated current (In) at 440 V, 15,000 cycles at 690 V In/2, and 7,500 cycles at 690 V In. These numbers matter for frequent-switching applications like lighting or motor feeder panels where the breaker cycles regularly.