What this MCCB carries
The Siemens SENTRON 3VA1010-3ED42-0CH0 is a 4-pole molded case circuit breaker rated 100 A at 40 °C, with a breaking capacity of 75.6 kA at 240 V. It's designed for line protection and includes an undervoltage release (UVR) plus two auxiliary switches and one trip alarm switch (HQ). The insulation voltage is rated 800 V.
Breaking capacity across voltages
This MCCB delivers 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V. That spread tells you where it has headroom for high-fault installations and where it's limited — at 690 V the 7.5 kA rating means it's not for high-fault 690 V feeders unless the available fault current is well under that.
Thermal derating curve
Rated 100 A from 40 °C through 50 °C, then it starts to step down: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. If your panel ambient runs hot, that 91 A at 70 °C is the number to size against — not the 100 A sticker.
Panel fit and dimensions
The 3VA1010-3ED42-0CH0 measures 70 mm deep, 101.6 mm wide, and 130 mm high — a standard 4-pole MCCB footprint for DIN-rail or panel-mount integration. The 101.6 mm width (4 inches) matches the typical 4-pole slot in a SENTRON distribution panel.