The Siemens SENTRON 3VA1010-4ED36-0KC0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current — the line protection version, meaning it's built for feeder and distribution duty rather than motor branch-circuit protection. The TM210 thermal-magnetic release handles overload and short-circuit tripping in one package, no external relay needed.
Breaking capacity — what the voltages mean
This breaker's interrupting rating varies sharply with system voltage: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. That 121 kA figure at 240 V is what you'd see on a 240 V delta secondary or a 120/240 V center-tapped service — high enough for most distribution panels. At 415 V (common in European industrial grids) the 75.6 kA still covers high-fault locations. The 690 V rating drops to 11.9 kA, so verify available fault current if you're on a 690 V system.
Thermal derating and panel fit
Rated continuous current holds at 100 A from 40 °C up to 50 °C ambient. Above that it steps down: 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, 90 A at 70 °C. If the panel ambient runs hot — say a crowded enclosure with drives — factor that derating into the load schedule. Dimensions are 70 mm deep, 76.2 mm wide, 130 mm tall. The 76.2 mm width (roughly 3 inches) is standard for a 3-pole MCCB footprint; it'll fit existing SENTRON busbar and mounting base without panel rework.
Integrated accessories and wiring
Ships with 2 auxiliary switches (HQ type) pre-installed — no separate order for basic status feedback. The shunt trip (STL) is built in, part number 3VA9688-0BL33 for the integrated auxiliary trip. No undervoltage release, no communication module, no phase failure detection. Rated insulation voltage is 800 V, so it's suitable for 480/277 V and 600 V systems within the breaking capacity envelope. Front protection is IP40 — fine for enclosed panel mounting, not for washdown.