Siemens SENTRON 3VA1150-6EF36-0JA0 — 50 A MCCB with Shunt Trip, Line Protection
The Siemens SENTRON 3VA1150-6EF36-0JA0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection in industrial and commercial distribution panels. It carries a continuous rating of 50 A at 40 °C, derating to 45 A at 70 °C — so in a warm enclosure or high-ambient panel, the actual load you can protect may be a few amps lower than the 50 A nameplate suggests. Breaking capacity is the headline here: 220 kA at 240 V, dropping to 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 500 V and 690 V. That 220 kA figure at 240 V means this breaker can safely interrupt a fault current of up to 220,000 A — typical for high-fault utility feeds or transformer secondaries where the available short-circuit current is severe. Rated insulation voltage is 800 V, so the breaker's internal clearance and creepage are sized for 800 V systems, giving headroom on 480 V or 600 V class panels. The shunt trip release (STL) allows remote tripping via a control signal — useful for emergency-stop circuits or supervisory shutdown.
Sourcing & Lifecycle — Active Production, Quoted to Order
The product brand is SENTRON, Siemens' standard line for molded case breakers up to 1600 A. No official successor or alternate MPN is listed in the lifecycle record, so the 3VA1150-6EF36-0JA0 remains the direct order code for this rating and release configuration.
Integration — Panel Fit and Mounting
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures. The 70 mm depth (2.76 in) is shallow enough for compact distribution boards; verify the enclosure depth clearance against the 70 mm plus wiring space. The overcurrent release is a TM240 thermal-magnetic type — fixed thermal and magnetic settings, no electronic adjustment. Trip indicator is not fitted; the breaker relies on the handle position for visual status. Communication function is absent, so this is a standalone breaker, not a smart or networked device.