The Siemens SENTRON 3VA1110-5GE46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated 100 A continuous at 40 °C, with a TM220 thermal-magnetic trip unit. It is a line-protection device — meaning it protects cables and busbars from overload and short-circuit, not motor or generator circuits. The 4-pole construction (three phases plus switched neutral) makes it suitable for three-phase systems where the neutral must be disconnected and protected alongside the phases.
Breaking capacity — the real-world fault current it can interrupt
This breaker's interrupting capacity varies sharply with system voltage: 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. At 690 V the 17 kA rating is still adequate for most motor-control-center lineups.
Thermal current and ambient derating
Above that the TM220 release begins to derate: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. In a sealed, uncooled enclosure near other heat sources, plan for the 70 °C column.
The 4-pole width (101.6 mm) is standard for a 100 A frame in the SENTRON 3VA platform. No undervoltage release, no voltage trigger, no communication module — this is a plain thermal-magnetic breaker with no auxiliary electronics.