What this MCCB is and what it carries
The Siemens SENTRON 3VA1010-4ED42-0JC0 is a 4-pole molded case circuit breaker (MCCB) rated for 100 A continuous current, built for line protection duty — meaning it protects cables and busbars from overloads and short circuits, not motor overloads (no phase-failure detection, no undervoltage release). The thermal-magnetic release is a TM210, a fixed-trip type that needs no field adjustment — set and forget for distribution panels. It ships with a factory-installed shunt trip (STL) release and 2 auxiliary switches (HQ type) for remote tripping and status feedback, a common spec for panel builders who need emergency-off or PLC interlock circuits.
Breaking capacity — what the voltage columns tell you
This MCCB delivers 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V — the full SCCR curve across common industrial voltages. At 415 V — the standard three-phase distribution voltage in much of Europe and Asia — 75.6 kA puts it comfortably above the 50 kA or 65 kA that most main switchboards require, giving selectivity headroom for downstream feeders. The 690 V figure (11.9 kA) is low enough that you need to check coordination if this breaker sits on a 690 V bus; it's not a high-fault device at that voltage.
Thermal derating — the real current you can run
Rated 100 A from 40 °C through 50 °C ambient, then derates to 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C — a mild drop that reflects the TM210's thermal element staying stable until the upper end of the operating range. The operating ambient range is -25 °C to 70 °C, storage from -40 °C to 80 °C; the derating curve governs the continuous load at the panel's internal temperature, not the room ambient.
Physical fit and panel integration
Dimensions are 130 mm height, 101.6 mm width, 70 mm depth — a 4-pole MCCB that fits standard SENTRON mounting footprints; the 101.6 mm width is exactly 4 × 25.4 mm (4 module spaces) on a DIN rail or panel-mount adapter. Front protection is IP40 — suitable for enclosed distribution boards; not rated for washdown or outdoor exposure without an additional enclosure.
Lifecycle and sourcing posture
Rated insulation voltage is 800 V, mechanical endurance 15,000 cycles, and the integrated shunt trip accessory is order code 3VA9688-0BL32 if you need a spare release module.