The Siemens 3VA2063-6HL32-0KL0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current and a breaking capacity of 242 kA at 240 V AC. This 3-pole unit is designed for line protection in distribution panels and motor control centers, with a shunt trip (STL) release and a full complement of auxiliary switches: 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ). The 242 kA interrupting rating at 240 V means it can safely clear a fault up to that level without upstream devices needing to intervene — critical for high-fault locations like service entrances or industrial mains.
Breaking capacity and selectivity
The 242 kA at 240 V is the headline figure, but the breaker also carries 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V. This is a high-interrupting-capacity (HIC) MCCB — it maintains full selectivity downstream through a wide fault range. For a panel OEM coordinating with upstream fuses or a larger MCCB, the 63 A frame with this interrupting rating allows a single breaker to cover the entire fault spectrum without cascading, simplifying the coordination study.
Dimensions and panel fit
The breaker measures 86 mm deep, 105 mm wide, and 181 mm high. The 105 mm width fits a standard 3-pole MCCB footprint on a DIN rail or panel-mount base. Depth of 86 mm leaves clearance for rear-connected busbars or cable lugs in a typical 600 mm deep enclosure. Operating temperature range is -25 °C to 70 °C, with storage from -40 °C to 80 °C, covering most indoor industrial environments.
Auxiliary and release configuration
Factory-fitted with a shunt trip (STL) for remote tripping, plus 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ). The trip indicator and voltage trigger are present. No undervoltage release, no ground-fault monitoring, and no communication function on this variant. The shunt trip allows integration with emergency-stop circuits or supervisory control systems — wire it to a remote pushbutton or PLC output for controlled shutdown.