What this 160 A MCCB brings to a panel
The Siemens SENTRON 3VA2116-5JP36-0AA0 is a 3-pole molded case circuit breaker rated for 160 A continuous current, built around the ETU550 electronic trip unit. That trip unit gives you adjustable overload and short-circuit protection curves, plus a communication function onboard for remote monitoring or integration into a higher-level control system. It's designed for line protection — meaning it sits at the feeder or main distribution point, not downstream on a specific motor or load. Rated insulation voltage is 800 V, and the interrupting ratings climb to 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That's the short-circuit current it can safely clear at those voltages — important for coordination studies and ensuring the breaker holds up under fault without taking out upstream gear. One thing that stands out: the breaker carries its full 160 A rating from 40 °C all the way up to 70 °C ambient. No derating curve to chase. That simplifies panel design in warm environments — switchgear rooms, outdoor enclosures, or any spot where heat builds up. The operating range spans -25 °C to 70 °C, storage from -40 °C to 80 °C.
Dimensions and panel fit
The breaker measures 181 mm high, 105 mm wide, and 86 mm deep. That's the standard 3VA frame size for this current class — it bolts into the same footprint as other 160 A SENTRON MCCBs. Front protection is IP40, meaning tools and fingers stay out, but it's not sealed against water spray; keep it inside the enclosure.
What the ratings mean for your application
The ETU550 electronic trip unit provides adjustable long-time pickup, short-time pickup, instantaneous, and ground-fault (if equipped) protection. The communication function lets the breaker talk to a PLC or SCADA system. Power loss at full load is 25.5 W maximum. Not a huge heat load in a panel, but worth accounting for when you're stacking multiple breakers in a confined space. The no-derating-to-70°C spec already helps with that.