The Siemens 3VA2110-5KQ32-0AA0 is a SENTRON molded case circuit breaker rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C.
Trip unit and protection profile
It ships with the ETU860 electronic overcurrent release — that's the programmable unit with LSIG (long-time, short-time, instantaneous, ground-fault) capability, not a fixed thermal-magnetic. Ground-fault monitoring is configured as summation current formation on the L-conductor. The N-conductor protection is adjustable: it can be switched OFF or set from 20 % to 160 % of the phase rating. That adjustability matters when you're feeding a panel that may or may not have a full-capacity neutral, or when you need to coordinate with downstream sub-feed breakers.
Integration and panel fit
The 3VA2110-5KQ32-0AA0 occupies 105 mm width, 181 mm height, and 86 mm depth. It is a 3-pole unit with no trip indicator and no undervoltage release. Front face carries an IP40 protection class.
Environmental and compliance
Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Maximum power loss is 10 W. Rated insulation voltage is 800 V.