63 A MCCB for line protection, active in the SENTRON family
The Siemens 3VA1063-3ED36-0CH0 is a 3-pole SENTRON molded case circuit breaker rated for 63 A continuous current (Iu) at 40 °C, with a TM210 thermal-magnetic overcurrent release. Breaking capacity varies with system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V.
Above that, it derates linearly to 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, and 56.7 A at 70 °C — useful to know when the MCCB sits in a crowded enclosure near other heat sources. Footprint is 76.2 mm wide, 130 mm tall, 70 mm deep — a standard 3-pole MCCB width that fits SENTRON panel-mounting systems and most DIN-rail adapters.
This variant ships with two auxiliary switches plus one trip-alarm switch (HQ configuration) and an integrated undervoltage release (UVR). The UVR coil is designed for the 3VA9608-0BB24 auxiliary release module — if you need to add or replace the undervoltage coil, that is the order code to cross-reference. Mechanical endurance is rated at 15,000 operations — typical for a line-protection MCCB that sees infrequent switching (mostly fault clearing and maintenance isolation).