The Siemens SENTRON 3VA1116-6EF32-0AG0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a TM240 thermal-magnetic overcurrent release. At 40 °C it handles 160 A continuous, derating to 150 A at 70 °C. The interrupting ratings are the headline here: 220 kA at 240 V, 154 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500/690 V — meaning it can clear high-fault currents on a transformer secondary or bus riser without upstream coordination headaches. Insulation voltage is rated 800 V, so it's comfortable on 480 V/600 V systems.
What the ratings mean for fit
The 220 kA at 240 V is the peak short-circuit rating — this breaker is sized for high-available-fault locations like main switchboards or industrial distribution panels where the utility transformer sits close. The 160 A frame with TM240 release means the thermal pickup is adjustable up to 240 A, so you can dial it for the actual load, but the continuous ampacity at the terminals is 160 A at 40 °C. The 3-pole design covers three-phase loads; the built-in auxiliary switch plus trip alarm switch (HP type) gives remote status without an add-on module. Width is 76.2 mm (3 in), depth 70 mm, height 130 mm — fits standard MCCB panel cutouts and busbar spacing. The line protection designation means it's configured for cable/feeder protection out of the box, not motor or generator duty, so the trip curve is optimized for overload and short-circuit on distribution circuits.
Panel integration
Snap-on mounting for standard DIN rail or direct panel screw-mount via the rear slots. The 70 mm depth leaves clearance for rear-connected busbars in a typical 200 mm deep enclosure. Power loss at full load is 38 W — factor that into enclosure ventilation if the panel is densely packed. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C.