Siemens 3VA2063-6KP46-0AA0 — SENTRON MCCB with ETU850 Release
The Siemens 3VA2063-6KP46-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed as the panel warms up. Its ETU850 electronic overcurrent release provides adjustable protection curves for line distribution, not just thermal-magnetic fixed trip. The 4-pole design handles three-phase plus neutral, and the 242 kA interrupting capacity at 240 V means it can clear a bolted fault at the service entrance without upstream fuses. Communication function is built in, so it can report status and trip events to a PLC or BMS over the plant network.
Interrupting Capacity and Selectivity
This MCCB delivers 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V. The steep drop at 690 V tells you this is a 600 V class frame — at 690 V the arc extinction limits the interrupt rating sharply. For a 480 V panel, the 187 kA figure gives you headroom for high-fault service entrances. The minimum rated current is 95 A, and the maximum is 756 A, which means the ETU850 release can be adjusted to protect conductors sized anywhere in that band.
Physical Fit and Panel Integration
Dimensions: 181 mm height, 140 mm width, 86 mm depth. The 86 mm depth is shallow enough to fit a 200 mm deep enclosure with clearance for rear-mounted busbars. Front IP40 protection means it's suitable for dry indoor panels only — no washdown environments. The 5.4 W maximum power loss at rated load is low enough that ventilation slots in a standard sheetmetal enclosure suffice; no forced cooling required.
Compliance and Documentation
The SENTRON 3VA series carries UL 489, CSA C22.2 No. 5, and IEC 60947-2 certifications as standard. RoHS and REACH declarations are included in the Siemens documentation package. The insulation voltage is rated at 800 V, which covers 480 V and 600 V systems with margin. Storage temperature range is -40 °C to 80 °C; operating range is -25 °C to 70 °C.