What this MCCB is and where it fits
The Siemens SENTRON 3VA2116-6HL32-0CC0 is a 3-pole molded case circuit breaker (MCCB) rated for 160 A continuous current, designed for line protection in distribution panels and industrial switchboards. It carries a 242 kA interrupting capacity at 240 V, dropping to 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V — so the breaking capacity you actually get depends on your system voltage, and at 690 V it's derated sharply. This is a line-protection design (not a motor-protector version), meaning it's sized for feeder and main breaker duty where the load is a cable or busbar, not a motor starting profile. The 160 A rating holds flat across the entire 40 °C to 70 °C ambient range — no derating needed up to that temperature, which simplifies panel layout in warm enclosures.
Built-in auxiliaries and releases
Factory-fitted with an undervoltage release (UVR) and two auxiliary switches (HQ design) — the UVR trips the breaker when control voltage drops, which is standard for emergency-stop or undervoltage protection schemes. The two auxiliary switches give you status feedback (open/closed) for PLC inputs or remote indication without adding a separate accessory block. No communication module, voltage-trip module, or ground-fault monitoring is built in — this is a plain-vanilla thermal-magnetic MCCB with UVR and aux contacts. If you need Modbus or ground-fault, you're looking at a different variant in the 3VA2 family.
Physical footprint and panel fit
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON mounting bases and panel cutouts. The 105 mm width is typical for a 160 A frame; verify your busbar spacing and enclosure depth (86 mm) before committing the gland plate. Power loss is 28 W maximum at rated current — that's the heat you need to vent in a sealed enclosure. For a multi-breaker lineup, sum the losses and check the thermal rise against your enclosure rating.