Siemens SENTRON 3VA1116-4EF36-0AH0 — 160 A MCCB for Line Protection
The Siemens SENTRON 3VA1116-4EF36-0AH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 160 A continuously at 40 °C ambient with no derating needed up to 50 °C — a solid fit for main feeder or large subfeed applications in industrial distribution panels. Breaking capacity reaches 121 kA at 240 V AC, dropping to 75.6 kA at 415 V and 52.5 kA at 440 V — enough headroom for high-fault utility feeds without cascading upstream breakers. The TM240 thermal-magnetic release provides fixed thermal and magnetic trip settings, suited for cable and busbar protection where adjustable electronic releases aren't required.
Ratings & What They Mean for Panel Fit
Rated insulation voltage is 800 V. Power loss at rated load is 38 W maximum — factor that into enclosure thermal calculations if the panel is densely packed or operating near the upper ambient limit. Operating temperature range is -25 °C to +70 °C, with full 160 A rating holding through 50 °C; above that the current derates gradually to 150 A at 70 °C. Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that fits most Siemens SENTRON mounting bases and busbar systems without panel rework.
Auxiliary & Alarm Switching
This variant includes 2 auxiliary switches plus 1 trip alarm switch (HQ design) — enough for remote status indication and trip signalling without an external relay interface. No undervoltage release, no ground-fault monitoring, and no communication function are fitted on this order code — it's a straight line-protection breaker with basic signalling.