The Siemens 3VA1110-1AA32-0JA0 is a SENTRON 3VA1 switch disconnector in MCCB design, IEC frame 160, 3-pole, rated for a continuous current Iu of 100 A. It is configured without overload or short-circuit protection — this is a disconnect-only device, not a circuit breaker. The integrated shunt trip (STL) release operates on 110-127 V DC or AC 50/60 Hz, per the product designation.
The 100 A rated continuous current (Iu) sets the maximum load it can carry continuously without exceeding temperature limits. Rated insulation voltage Ui is 800 V, with max operational voltage 690 V AC 50/60 Hz and 500 V DC. That covers standard 400/480 VAC three-phase systems and many DC bus applications up to 500 V. The 2 kA limited short-time withstand (1 s and 0.5 s) tells you this disconnector is rated to hold closed under fault current up to 2 kA for those durations. It is not a breaker — it does not interrupt faults. Upstream protection must clear any fault before the disconnector's short-time rating is exceeded.
Deployment context
This is a panel-mounted switch disconnector for isolating a load circuit. The busbar connection on the front terminals means it integrates into a busbar distribution system — typical for main incomers or large sub-feed disconnects in industrial switchboards. The 76.2 mm width (roughly 4.5 module spaces) and 70 mm depth fit standard SENTRON 3VA1 panel cutouts.