What this MCCB carries and where it fits
The Siemens SENTRON 3VA2116-5HN36-0AJ0 is a 3-pole molded case circuit breaker rated for 160 A continuous current at 40 °C through 70 °C — no derating needed across that span, which simplifies panel design in warm enclosures. Breaking capacity reaches 187 kA at 240 V AC, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA figure at 240 V covers high-fault utility feeds and transformer secondaries where available short-circuit current runs high. Insulation voltage is rated 800 V, so the breaker can sit on a 690 V line with margin. It is a line-protection device (no ground-fault monitoring, no undervoltage release, no communication module) — a straightforward main or feeder breaker for distribution panels, motor control centers, and switchboards.
Breaking capacity — what the voltage steps tell you
The 187 kA at 240 V is the headline number, but the 121 kA at 415 V is the one that matters for most European and Asian 400 V class panels. At 500 V it still holds 75.6 kA — enough for most industrial 480 V feeds in North America. The drop to 3.7 kA at 690 V means this frame is not intended for high-impedance 690 V systems; if your line side is 690 V with significant fault current, you need a larger frame or a current-limiting upstream device. The 160 A rating holds flat across the full 40–70 °C ambient range — no temperature derating curve to apply, which is unusual for an MCCB and saves a calculation step during panel build.
Physical fit and auxiliary wiring
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — a standard SENTRON 3VA2 frame footprint. The breaker ships with 2 auxiliary switches plus 1 trip alarm switch (HP type) factory-fitted, so you get position feedback and a separate alarm contact on fault without ordering add-on modules. No communication function, no undervoltage release, no shunt trip — if you need remote trip or status over a bus, this is not the variant. The supplied basic switch order code is 3VA21165HN360AA0, which is the internal switching mechanism; you order the complete breaker as 3VA2116-5HN36-0AJ0.