The Siemens SENTRON 3VA2116-5KQ42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 160 A continuous current, designed for line protection in distribution panels. It carries a 187 kA interrupting capacity at 240 V, derating to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — so at typical 400 V industrial feeds, it clears faults up to 121 kA without cascading upstream. That SCCR headroom matters for coordination studies: you can leave downstream breakers with lower ratings as long as the let-through energy is coordinated.
Fit and panel integration
At 140 mm wide, 181 mm tall, and 86 mm deep, this MCCB fits standard SENTRON mounting footprints — no surprise for a panel built around the 3VA platform. The 4-pole body takes up the same width as a 3-pole unit with a neutral pole integrated, so if you're swapping in from a 3-pole spec, check the gland plate clearance on the neutral side. Depth at 86 mm (3.39 in) means it clears most 200 mm deep enclosures with room for rear busbars. Power loss hits 25.5 W maximum at rated load — that's warm enough to consider lateral spacing in a densely populated panel, but within the range of a standard SENTRON MCCB. No derating needed across the full ambient range from -25 °C to 70 °C; the 160 A rating holds flat from 40 °C through 70 °C, which is useful for hot-side installations like near furnace controls or outdoor enclosures in direct sun.
Protection and monitoring functions
This breaker includes ground-fault monitoring via summation current formation on L + N conductors. It also carries a communication function and an other measurement function. No undervoltage release or voltage trigger on this variant. The trip unit is set with a full-scale value of 160 A and an initial pickup of 32 A — that suggests an electronic trip with adjustable long-time and short-time thresholds. No mechanical trip indicator on this unit, so fault events need to be read via the communication interface or local display if fitted.