Motor-protection MCCB with electronic LSI trip
The Siemens 3VA2140-5MP36-0AA0 is a 3-pole IEC molded case circuit breaker from the 3VA family, built on a 160 A frame and fitted with an ETU550M electronic trip unit for motor protection. The LSI protection profile — long-time (Ir), short-time (Isd), and instantaneous (Ii) — is adjustable: overload protection Ir spans 16…40 A, short-circuit protection Isd runs 1.2…15× In, and Ii covers 3…15× In. That means you can dial the trip curve to match a specific motor's locked-rotor and starting profile without swapping the breaker. Breaking capacity sits at Icu=55 kA @ 415 V (class M), which is enough for most industrial distribution panels fed by a medium-voltage transformer in the 1–2 MVA range. The 160 A frame gives headroom if the motor load grows — you can re-terminate up to that frame rating without swapping the entire breaker.
Integration and mounting
Terminal connection on a 3-pole IEC frame 160 breaker — mounts via the standard bolted or screw-clamp method into a panel or enclosure. The packaging dimensions (200 × 134 × 145 mm) give a rough envelope for panel layout. This is a manufactured-to-order product class (C), so it's not a shelf-stocked item; lead time and availability are confirmed at quote.