Line protection MCCB with ETU320 release
Its ETU320 electronic overcurrent release provides adjustable thermal-magnetic characteristics, letting you tailor the trip curve to the load without swapping the breaker. Breaking capacity hits 242 kA at 240 V and still delivers 187 kA at 415 V and 440 V, dropping to 121 kA at 500 V and 3 kA at 690 V.
Dimensions are 181 mm tall, 140 mm wide, 86 mm deep — a 4-pole MCCB that fits the standard Siemens 3VA frame footprint. The 86 mm depth means it clears a 100 mm deep enclosure without gland-plate interference. Mounts via the rear fixed contacts or optional plug-in base; no DIN rail adapter needed. Power loss is 5.4 W maximum, low enough that thermal rise in a sealed panel stays manageable.