Switch Disconnector for Load-Break Isolation
The Siemens 3VA1163-1AA42-0AA0 is a SENTRON switch disconnector built in an MCCB form factor — IEC frame 160, 4-pole, rated 63 A continuous — designed for safe load-break isolation without overload or short-circuit protection. It is a pure disconnecting means: no trip unit, no undervoltage release, no auxiliary contacts. That makes it the right choice when you need a visible-break isolator that fits a standard MCCB footprint and handles full rated current across the entire operating temperature range. Rated current holds flat at 63 A from 40 °C through 70 °C — no derating curve to track. That simplifies panel thermal budgeting in warm enclosures or near other heat sources. Insulation voltage is rated 800 V; operating voltage is 690 V AC or 600 V DC, so it covers 480 V and 600 V class systems with headroom. Mechanical service life is 15,000 operating cycles typical. That is adequate for routine isolation in a panel that sees weekly or monthly switching.
Mounting and Connection
Main circuit connection is busbar-compatible via front terminals — the busbar connection type and front terminal arrangement mean it integrates into standard panel busbar systems without adapters. Dimensions: 70 mm deep, 101.6 mm wide, 130 mm tall. That width is a standard 4-pole MCCB footprint; verify busbar pitch matches your existing layout. Front protection is IP40 — suitable for enclosed panel mounting where the front face is behind a door. No auxiliary switch or release fitted, and no communication function. Optional motor drive can be added via the product extension slot if remote operation is needed.
Lifecycle and Sourcing
For compliance documentation: as a Siemens SENTRON product, it carries the usual CE marking for the European market and is designed to relevant IEC standards (IEC 60947-3 for switch-disconnectors). RoHS and REACH declarations are available from Siemens documentation portal using the order code.