The Siemens SENTRON 3VA2163-7MN32-0DL0 is a 3-pole molded case circuit breaker (MCCB) in the motor protection variant, rated for 63 A continuous current and carrying a 330 kA interrupting rating at 240 V. It is a current-production part, actively manufactured.
Breaking capacity and trip unit
The interrupting rating drops as system voltage rises: 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V. These numbers define the maximum fault current the breaker can safely clear at each voltage level — critical for selectivity studies and SCCR compliance on the line side. The ETU350M electronic trip unit handles the overcurrent protection. It includes phase failure detection, a useful feature for motor circuits where a lost phase can cause single-phasing damage. The breaker also ships with an undervoltage release (UVR) as the auxiliary release type.
Thermal derating and auxiliary contacts
The 63 A rating holds at ambient temperatures up to 50 °C. Above that, derating applies: 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, and 56.7 A at 70 °C. If the panel ambient runs hot, this is the curve that governs actual ampacity. The auxiliary contact block is configured as 2 auxiliary switches plus 1 trip alarm switch plus 1 electrical alarm switch (HQ designation). The integrated auxiliary trip is a separate orderable subassembly, order code 3VA9608-0BB25. The basic switch itself is order code 3VA2163-7MN32-0AA0.
Physical footprint and environmental limits
Dimensions are 181 mm high, 105 mm wide, and 86 mm deep. The 105 mm width is the standard 3-pole MCCB form factor for the SENTRON 3VA frame — panel layouts and busbar spacing designed for a 3-pole SENTRON will accept this unit without rework. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Maximum power dissipation is 75 W.