What it is and what the ratings mean
The Siemens SENTRON 3VA2116-5HN32-0JH0 is a 3-pole molded case circuit breaker (MCCB) rated for 160 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Its interrupting capacity hits 121 kA at 415 V, which means it can safely clear a fault at that level without upstream devices needing to trip, a key figure for high-fault panels in industrial distribution.
Breaking capacity across voltages
This MCCB delivers 187 kA at 240 V, 121 kA at both 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. The steep drop at 690 V is typical for a 160 A frame — the arc extinction limits at higher voltage. For 690 V applications, confirm the available fault current stays under 3.7 kA.
Built-in accessories and fit
Factory-fitted with a shunt trip (STL), two auxiliary switches, and one trip alarm switch (HQ). The shunt trip lets you remotely open the breaker via a control signal — useful for emergency-off or interlock circuits. No undervoltage release or ground-fault monitoring on this variant. Dimensions: 105 mm wide, 181 mm tall, 86 mm deep. The 86 mm depth is the projection into the panel; verify clearance against your enclosure depth, especially with rear-mounted busbars.