The Siemens 3VA1510-5EF32-0JA0 is a SENTRON molded case circuit breaker rated 1000 A at 40 °C, with a 121 kA breaking capacity at 415 V AC across three poles. The shunt trip (STL) release allows remote trip via a control signal, so it integrates into emergency-stop or undervoltage protection schemes. Rated current holds flat at 1000 A from 40 °C up to 50 °C, then derates to 960 A at 55 °C and 900 A at 70 °C. In a warm enclosure or high-ambient panel, plan for that thermal curve — the breaker doesn't lose headroom until past 50 °C. The 120 mm depth keeps it within typical distribution panel clearances without requiring deep gland plates.
Sourcing and lifecycle — active, no LTB watch needed
That means a replacement shunt trip can be ordered separately if the release fails in service.
Breaking capacity across voltages — where it fits
Breaking capacity scales with system voltage: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, 52.5 kA at 690 V. At 415 V — the most common industrial distribution voltage — 121 kA covers virtually all transformer sizes up to 2500 kVA. At 690 V the 52.5 kA rating still suits heavy motor circuits with high short-circuit current.
Integration — panel fit and wiring notes
Three-pole design with line protection trip curve (TM240 thermal-magnetic release). No undervoltage release fitted, no ground-fault monitoring — those are add-on accessories if the application requires them. The 330 W maximum power loss means ventilation in the enclosure matters; in a sealed cabinet with other high-current devices, account for the heat load. The communication function is absent — this is a stand-alone breaker, not a metering or networked unit.