The breaker is designed for panel mounting in industrial distribution and motor control centers, with an IP40 protection rating on the front face — suitable for dry indoor environments where splash or dust ingress is limited.
The breaking capacity varies sharply with system voltage: 187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V. At 415 V — the most common three-phase industrial level — 121 kA is well above typical utility fault currents, so this breaker can be applied near the service entrance without upstream current-limiting fuses. The 690 V figure (17 kA) limits its use in 690 V drives or mining applications to lower-fault installations.
Thermal derating and continuous current
Above 50 °C it derates: 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C. In a sealed panel with multiple breakers ganged, expect the internal ambient to rise; size the breaker for the actual enclosure temperature, not the room temperature.
Dimensions: 158 mm height, 140 mm width, 70 mm depth. The 140 mm width is typical for a 4-pole MCCB in this frame size.