What this MCCB carries — and where it stops
The Siemens SENTRON 3VA1132-6GF46-0KF0 is a 3-pole molded case circuit breaker rated for line protection, with a continuous current Iu of 100 A and a TM240 thermal-magnetic overcurrent release built in. Interrupting capacity is the headline here: 187 kA at 240 V AC, 121 kA at 415 V, 76 kA at 440 V, and 17 kA at both 500 V and 690 V. That 187 kA figure at 240 V means it can handle a direct fault on a high-capacity transformer secondary without upstream fuses needing to clear first — real selectivity headroom for a main or feeder position. Thermal derating is mild: it holds 100 A flat from 40 °C through 50 °C, then drops to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. That curve means you don't lose rating in a warm panel until you're past 50 °C ambient — useful when the breaker sits above heat-producing gear in a sealed enclosure.
Panel fit and auxiliary wiring
Height is 130 mm, width is 3 in — a standard 3-pole MCCB footprint that drops into most SENTRON panelboards and switchgear without re-drilling the mounting plate. Front protection is IP40, so it's fine for a clean indoor enclosure but not washdown areas. Comes with one auxiliary switch and one trip alarm switch (HQ type), plus a shunt trip release (STL) integrated. The shunt trip order code is 3VA9688-0BL33 — that's the add-on you need if you're wiring an emergency-stop or remote-trip circuit. No undervoltage release fitted, no communication module, no ground-fault monitoring.
Lifecycle and sourcing reality
For an independent-trader question: this 3VA1132-6GF46-0KF0 will not drop into a panel wired for the 3VA1010-2ED32-0JA0 without checking the mounting footprint and bus-bar spacing — the frame sizes differ (the 3VA1010 is a smaller frame). The auxiliary and shunt-trip wiring may line up, but the physical cutout and lug centers are not guaranteed to match. Best to compare panel cutout dimensions before assuming a swap.