The Siemens SENTRON 3VA1196-3EF42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, carrying a TM240 thermal-magnetic release and a continuous current of 16 A up to 55 °C ambient — no derating needed until 60 °C, where it steps to 15 A. The interrupting capacity hits 75.6 kA at 240 V, 52.5 kA at 415 V, and still holds 11.9 kA at 690 V, so it handles high-fault service-entrance and distribution panels without cascading upstream breakers.
Sizing and selectivity
The TM240 release is a fixed thermal-magnetic design — no interchangeable trip units, no electronic adjustment. That keeps the part simple and repeatable for BOM consistency: every unit in the panel trips at the same curve. The 800 V rated insulation voltage (Ui) means it can sit in a 690 V distribution board with full coordination margins.
Panel fit and wiring
Dimensions are 101.6 mm wide, 130 mm high, 70 mm deep — a standard 4-pole MCCB footprint that drops into most DIN-rail or screw-mounted SENTRON bases without re-drilling the backplate. No undervoltage release, no shunt trip, no communication module on this variant; it is a straight line-protection breaker with no auxiliary functions.