Continuous rating and thermal performance
The Siemens SENTRON 3VA1116-5EF32-0AG0 is a 3-pole molded case circuit breaker (MCCB) rated for 160 A continuous current at 40 °C, and it holds that full 160 A rating all the way up to 50 °C ambient. Above that, the rating steps down in a controlled derate curve: 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. That means in a warm panel — say, a packed enclosure near a process line — you still have 150 A of headroom at the upper end of the operating range.
Breaking capacity across system voltages
This MCCB carries a 187 kA interrupting rating at 240 V AC, dropping to 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. That 187 kA at 240 V is a high-fault figure — suited for large transformer secondaries or high-capacity busway feeds where available fault current can exceed 100 kA. At 690 V the 17 kA rating still covers most industrial motor-control-center (MCC) applications.
Overcurrent release and auxiliary switching
The TM240 thermal-magnetic release provides fixed thermal and magnetic trip settings for line protection — no field adjustment, which simplifies specification and avoids mis-coordination downstream. The breaker ships with one auxiliary switch and one trip-alarm switch (HP design) factory-installed, so you get remote status and fault indication without an extra wiring pass. A mechanical trip indicator on the front face gives local visual confirmation of a trip event.
Electrical and environmental limits
Rated insulation voltage is 800 V, and maximum power loss at rated current is 38 W — a figure to consider when calculating enclosure heat rise, especially in a multi-breaker panel. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C, which covers most warehouse and shipping extremes without special handling.
Mounting and panel fit
Dimensions are 130 mm height, 76.2 mm width, and 70 mm depth. The 70 mm depth is shallow enough to fit in a standard 200 mm deep enclosure with room for rear wiring or bus bars. The 76.2 mm width (3 inches) matches the standard SENTRON 3-pole MCCB footprint — it drops into the same panel cutout and bus connection pattern as other 3VA1 frame-size breakers.