63 A, 4-pole MCCB with TM210 trip — what the ratings mean for your panel
The Siemens 3VA1163-5GD46-0AA0 is a SENTRON molded case circuit breaker rated for 63 A continuous on a 4-pole frame, using a TM210 thermal-magnetic overcurrent release. The TM210 designation means the thermal element is fixed at 63 A (the frame rating), with magnetic pickup adjustable between 5x and 10x In — so for a 63 A breaker, the instantaneous trip point can be set between 315 A and 630 A. That matters when you need to ride through motor inrush without nuisance tripping, but still clear a bolted fault fast. Interrupting capacity is the headline number here: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. At 415 V — common for European industrial distribution — 121 kA SCCR means this breaker can safely clear a fault up to that level without welding contacts or cascading upstream. That gives you headroom for high-fault panels near large transformers. Thermal derating is published: it holds 63 A up to 50 °C ambient, then drops to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. If your panel runs hot — say, a packed enclosure near a furnace line — you lose 5 A by 70 °C. Plan your load margin accordingly.
DIN-rail integration and panel fit
The breaker measures 101.6 mm wide, 130 mm tall, and 70 mm deep — a 4-pole MCCB that fits a standard DIN-rail mount. The 70 mm depth is shallow enough for most 200 mm deep enclosures; you won't need a deep gland plate or offset brackets. Front IP40 protection keeps dust out of the trip mechanism in a clean panel environment. Power loss is listed at 17.3 W maximum. In a multi-breaker lineup, that heat adds up — account for it in your thermal calculation if the panel is sealed or has limited convection.