What this MCCB delivers for the panel
The Siemens 3VA1163-3ED46-0AA0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels. It carries a continuous 63 A at 40 °C without derating — the rating holds flat through 50 °C, then drops 1 A per 5 °C step to 58 A at 70 °C, so a panel running warm at 55 °C still gets 62 A of headroom. The TM210 thermal-magnetic release handles overload and short-circuit protection in one package — no auxiliary trip unit needed for standard feeder or branch protection. Breaking capacity hits 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V, which covers most industrial service-entrance and panelboard fault levels in North American and IEC installations. Four poles give you the option to switch the neutral or use the fourth pole for a second load circuit — common in three-phase-plus-neutral distribution or dual-feed configurations. The 70 mm depth and 101.6 mm width fit standard MCCB panel cutouts; the 130 mm height leaves room for busbar connections above and below.
Lifecycle and sourcing posture
Rated insulation voltage is 800 V, so the breaker is suitable for 480/277 V and 600 V systems with margin. Power loss at rated current is 17.3 W — relevant for panel thermal calculations when grouping multiple breakers in a closed enclosure. Front-face protection is IP40 — tools and fingers are kept out, but the breaker is not sealed against hose-down or dust ingress. Mount it inside a panel with a door; it is not a standalone outdoor enclosure.
Integration and fit notes
The 70 mm depth and 101.6 mm width match the standard footprint for 4-pole SENTRON 3VA1 breakers. No special adapter plate needed for most DIN-rail or panel-mount enclosures — the breaker bolts directly to the mounting base with the supplied hardware. No undervoltage release, no shunt trip, no communication module on this variant — it is a straight thermal-magnetic breaker for manual or remote-operated applications where the trip signal is the only disconnect command. If you need undervoltage protection or remote tripping, look at the 3VA1 with the appropriate accessory slot. Storage temperature range is -40 °C to 80 °C, so it can sit in an unheated warehouse or a hot shipping container without damage. Operating range is -25 °C to 70 °C — fine for most indoor industrial environments.