The Siemens SENTRON 3VA2063-6HL32-0CA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 63 A continuous current across the full ambient range from -25 °C to 70 °C with no derating. That flat thermal curve means the 63 A rating holds at 40 °C, 50 °C, even 70 °C — no need to oversize for a warm panel.
Interrupting capacity and selectivity
Interrupting capacity hits 242 kA at 240 V AC, 187 kA at 415/440 V, and 121 kA at 500 V — figures that put it in the high-fault tier for an MCCB this size. At 690 V the rating drops to 3 kA, so if your service voltage is above 500 V, this breaker is not the primary fault-interrupt device; it is a downstream feeder or branch protector coordinated upstream of a higher-rated main. Rated insulation voltage is 800 V, which covers 480/600 V class systems with headroom. The 7.9 W maximum power loss matters for thermal budgeting in a sealed or densely packed enclosure — every watt counts when calculating internal temperature rise.
Built-in undervoltage release
This variant ships with an integrated undervoltage release (UVR) of the supplied basic switch 3VA20636HL320AA0. The UVR trips the breaker when control voltage drops below a set threshold — standard for applications where a loss of control power must open the circuit (e.g., emergency-stop chains, machine safety circuits). No external undervoltage module to mount or wire.
Physical fit and panel integration
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures. No trip indicator or communication function on this variant; it is a straight electromechanical breaker with the UVR as the only auxiliary release.