The Siemens SENTRON 3VA1110-1AA36-0JA0 is a 3-pole switch disconnector in MCCB design, rated at 100 A continuous current across the full operating temperature range from 40 °C to 70 °C — no derating needed up to the 70 °C ceiling. It is built on the IEC frame 160 platform and intended for isolation and switching duty where overload or short-circuit protection is handled separately upstream or by a downstream device.
What the ratings mean for fit
Rated operational voltage is 690 V AC and 500 V DC, with an insulation voltage of 800 V. That covers most 400 V and 480 V distribution panels cleanly, and the DC rating handles battery or UPS circuits up to 500 V. The shunt trip release (STL) operates on 110-127 V DC or AC 50/60 Hz — if your control voltage is 24 V DC, this release won't pull in; you'd need a different auxiliary release variant. Mechanical service life is 15 000 operating cycles, typical for a disconnect switch in this frame class — fine for infrequent isolation, not for daily motor starting.
Panel integration notes
The switch disconnector measures 70 mm deep, 76.2 mm wide, and 130 mm high. It uses front terminal connections for the main circuit, with lug-type terminals. The front face carries an IP40 protection rating — suitable for enclosed panel mounting, not for washdown or outdoor exposure. Maximum power loss is 38 W at rated current; plan for that heat dissipation inside the enclosure, especially if multiple units are ganged.