63 A MCCB with full-rated interrupting capacity across voltage bands
The Siemens SENTRON 3VA2063-5HN36-0BH0 is a 3-pole molded case circuit breaker rated for 63 A continuous current with no derating required across the full operating temperature range from -25 °C to 70 °C — the same 63 A holds at 40 °C, 55 °C, and 70 °C alike, so you size the feeder once and don't recalculate for panel ambient. Interrupting capacity is specified per voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That 187 kA figure at 240 V covers high-fault utility feeds; the 121 kA at 415 V matches typical industrial distribution in 400 V class systems. The drop to 3 kA at 690 V is expected for this frame size — the 63 A continuous rating governs the load side, not the fault rating at the highest voltage. Designed for line protection (cable/feeder protection per IEC 60947-2), with a built-in undervoltage release (UVR) that trips the breaker when supply voltage drops below a set threshold — useful for preventing motor re-acceleration after a sag or for coordinated undervoltage protection schemes.
Panel fit and auxiliary wiring
Dimensions are 105 mm wide × 181 mm tall × 86 mm deep — a standard 3-pole MCCB footprint for DIN-rail or panel-mount installation. The 86 mm depth fits within typical 200 mm deep enclosures with clearance for rear-connected busbars. Factory-fitted auxiliary switch block carries 2 auxiliary switches plus 1 trip alarm switch (HQ type), giving three independent contact sets for status feedback to a PLC or alarm annunciator. The basic switch assembly is order code 3VA20635HN360AA0 for replacement reference. Power loss is 7.9 W maximum at rated current — negligible for enclosure thermal budgeting but worth noting if the panel is densely packed with multiple breakers.
Lifecycle and sourcing posture
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time. The part is specified into BOMs as a direct fit; no cross-reference or second-source substitution is required.