SENTRON 3VA2163-7MN36-0BA0 — 63 A MCCB for Motor Protection
The Siemens SENTRON 3VA2163-7MN36-0BA0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. Breaking capacity is 330 kA at 240 V, dropping to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. That 330 kA figure at 240 V is the headline number — it handles high-fault scenarios at lower voltages common in industrial distribution, while the 3.7 kA at 690 V reflects the physical limits of the arc extinction at higher potential. Maximum power loss is 6.5 W, manageable for dense enclosures.
That simplifies panel design: if your load is 63 A or less and the ambient stays under 70 °C, this breaker carries it without margin games. No separate UVR module to order and install. Phase failure detection is standard, so the breaker will trip on loss of any one phase — essential for motor protection where single-phasing can burn out a winding before the overload curve responds.