What this MCCB is and what it does
The Siemens SENTRON 3VA1010-4ED36-0AH0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection in distribution panels and industrial switchgear. It carries a continuous current rating of 100 A at 40 °C, derating to 91 A at 70 °C, and uses a TM210 thermal-magnetic overcurrent release — the fixed thermal element handles overloads, while the magnetic trip responds to short-circuit events. Breaking capacity is voltage-dependent: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That means on a 480 V system (common in North American industrial plants) you get the 52.5 kA rating at 440 V — ample headroom for most service-entrance and feeder applications where available fault current is under 50 kA. Rated insulation voltage is 800 V, so the breaker is suitable for 690 V line-to-line systems with adequate clearance. Power loss at rated current is 25 W maximum — a useful figure for enclosure thermal calculations when packing multiple breakers in a confined panel.
Panel fit and wiring
Dimensions are 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that fits SENTRON distribution boards and most DIN-rail-mounting adapter plates. The 76.2 mm width (3 inches) matches the typical 3-pole module pitch, so it occupies three 25.4 mm positions on a panel grid. The breaker ships with a factory-fitted auxiliary switch block: 2 auxiliary switches plus 1 trip alarm switch (HQ type). This covers status feedback to a PLC or SCADA without needing a separate accessory order — the alarm contact closes on a trip event, which is the one you wire to the safety or alarm input.