The Siemens SENTRON 3VM1463-4ED42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 630 A and a TM210 thermal-magnetic overcurrent release. Its breaking capacity reaches 121 kA at 240 V and 76 kA at 415 V, which covers most industrial distribution panels where fault currents can climb into that range. The IP40 front protection means it's suited for enclosure mounting where the front face is accessible but the interior is sealed from tool or finger contact.
Ratings and what they mean for fit
The 630 A continuous rating holds across ambient temperatures up to 50 °C without derating; at 55 °C it's 618 A, at 60 °C it's 607 A, and at 70 °C it's 583 A. That thermal curve matters when the breaker sits in a warm enclosure near other heat sources — you don't lose headroom until the panel hits 55 °C. The TM210 release has an adjustable Ir up to 630 A and a fixed instantaneous pickup (Ii) at 5 040 A (8× Ir), so it clears high-impedance faults fast while riding through motor inrush. Rated insulation voltage Ui is 690 V, and the breaker's dimensions — 110 mm deep, 184 mm wide, 248 mm tall — fit standard MCCB panel cutouts. The 4-pole configuration handles three-phase plus neutral (solid or switched), though the N-conductor protection is not built in (design without).