It carries a continuous rated current Iu of 63 A and uses an ETU320 electronic trip unit for adjustable overcurrent protection.
This MCCB's interrupting rating varies sharply with system voltage. At 240 V it clears 187 kA; at 415 V and 440 V it handles 121 kA; at 500 V it drops to 75.6 kA; and at 690 V it is rated only 3.7 kA.
Thermal performance and ambient derating
This simplifies panel layout: you do not need to upsize the breaker for warm enclosures. The maximum power loss is 4 W, manageable even in a tightly packed panel.
The breaker measures 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that fits Siemens SENTRON 3VA2 panel cutouts and busbar systems. The depth of 86 mm (3.39 in) leaves clearance for rear-connected busbars or cable lugs inside a 200 mm deep enclosure.