The Siemens 3VA1163-3EF42-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 63 A and a 4-pole configuration. The TM240 thermal-magnetic release provides adjustable overload and fixed short-circuit protection, with a maximum short-circuit release setting of 630 A. Breaking capacity reaches 75.6 kA at 240 V AC and 52.5 kA at 415 V AC, figures that govern selectivity coordination in a distribution board.
Breaking capacity and thermal derating
Breaking capacity drops with system voltage: 32 kA at 440 V, 11.9 kA at 500 V, and 11.9 kA at 690 V. For a 415 V installation the 52.5 kA figure provides headroom above typical utility fault levels, but at 690 V the same 11.9 kA limit applies — confirm the available fault current at the point of installation. The continuous current rating holds at 63 A up to 50 °C ambient; above that it derates linearly to 58 A at 70 °C, as per the spec table.
Integration and mounting
The MCCB occupies a 101.6 mm width, 130 mm height, and 70 mm depth footprint — standard for a 4-pole SENTRON 3VA frame. Front IP40 protection suits enclosed panel mounting; no washdown rating. The optional motor drive (Product Extension / Optional / Motor Drive: Yes) allows remote trip or reset, useful for unattended switchgear.