The Siemens SENTRON 3VA2010-6HL42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection at 100 A continuous, with no derating across the full ambient range from 40 °C to 70 °C — all nine temperature points in the spec table show 100 A flat. That means the breaker holds its full rating inside a warm panel without a de-rate factor to track. The interrupting ratings climb to 242 kA at 240 V AC and 187 kA at 415 V AC, dropping to 3 kA at 690 V AC — the high short-circuit capacity at the lower voltages suits it for fault-current-heavy installations like transformer secondaries or large busway feeds.
Trip unit and protection logic
It carries an ETU320 electronic trip unit — that's the adjustable thermal-magnetic equivalent in the 3VA platform, giving you LSIG (long-time, short-time, instantaneous, ground-fault) protection curves. The N-conductor protection is configurable to OFF, 50%, or 100% of the phase rating, which matters when you're feeding a panel where the neutral load differs from the phase load.
Front-face protection is IP40, so it's suitable for dry indoor panels but not washdown areas. If you need remote signaling or a UVR, you'd look at the -8HL42 or -7HK42 siblings that carry those options.