What it is and what it does
The Siemens SENTRON 3VA1110-6GD42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 100 A continuous current (Iu). It carries the TM210 thermal-magnetic release — a fixed thermal pickup with an adjustable magnetic short-circuit trip, max setting 1000 A. This is the line-protection version, meaning it's built for feeder and main breaker duty, not motor protection. Breaking capacity is the headline number here: 220 kA at 240 V AC, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 500 V and 690 V. That's a high-interrupting rating — it can ride through a major fault without upstream fuses or a bigger breaker. Rated insulation voltage is 800 V, and max DC operational voltage is 600 V.
Thermal derating — the real-world limit
The 100 A rating holds at 45 °C and 50 °C, but starts to step down above that: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. If this breaker lives in a hot panel — say, next to a drive or in a non-climate-controlled enclosure — size your load against the derated figure, not the nameplate. Maximum power loss is 25 W.
Dimensions and panel fit
Footprint: 130 mm high, 101.6 mm wide, 70 mm deep. The depth is worth noting — at 70 mm (2.76 in), it's a shallow-body MCCB, which helps in tight backpanel layouts or shallow enclosures. Front face carries IP40 protection, so it's splash-safe from panel tools but not washdown-rated.
What the TM210 release means for coordination
The TM210 is a thermal-magnetic release with fixed thermal element (the '10' indicates the thermal rating multiplier) and an adjustable magnetic short-circuit pickup. The adjustable response value (Ii) max is 1000 A. That lets you dial in the magnetic trip to coordinate with downstream branch breakers — a common need on distribution panels feeding multiple subfeeds. No communication function, no ground-fault monitoring built in; those are add-on options (motor drive accessory is available).