Siemens 3VA2450-7MQ32-0BK0 — IEC Frame 630, 110 kA @ 415 V, ETU860M LSIG
The Siemens 3VA2450-7MQ32-0BK0 is a 3-pole IEC frame 630 circuit breaker with breaking capacity class C, rated Icu=110kA @ 415V. It is fitted with the ETU860M electronic trip unit providing LSIG protection (long-time, short-time, instantaneous, ground fault) and a fixed In=500A rating with overload protection adjustable Ir=200A...500A. Short-circuit protection is set via Isd=1.2..15 x In and Ii=3..15 x In. Ground-fault protection can be switched off, with Ig adjustable 0.2...1 x In and time delay tg=0.05-0.8s. The breaker includes an undervoltage release rated 24 V DC, one auxiliary switch changeover H, one trip alarm switch changeover, and one electrical alarm switch HQ.
Lifecycle & Sourcing
For BOM commitments or volume requirements, this unit is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
Deployment Context
As a 3VA2 frame breaker, it mounts on a DIN rail or panel base in standard switchgear and motor control center enclosures. The 110 kA @ 415 V SCCR provides substantial fault-current headroom for industrial distribution and motor protection applications where selectivity and coordination are critical. The integrated undervoltage release (24 V DC) and auxiliary/trip alarm switches make it suited for safety circuits requiring undervoltage protection and remote status indication — typical in process lines and critical motor feeders.