What the ratings mean for fit
The SENTRON 3VA2116-5HN32-0CH0 is a 3-pole molded case circuit breaker (MCCB) rated for 160 A continuous current, with a breaking capacity of 187 kA at 240 V AC and 121 kA at 415 V AC — that means it can safely interrupt fault currents up to those levels without welding its contacts or cascading the fault upstream. The 160 A rating holds across the full operating temperature range from -25 °C to 70 °C, so no derating is needed for a warm panel enclosure. The 3VA2 series is designed for line protection, not motor or feeder protection — the trip curve and accessories are configured for cable and busbar protection. The breaker includes an undervoltage release (UVR) and a complement of two auxiliary switches plus one trip alarm switch (HQ), which gives the controls integrator status feedback for the open/closed/tripped states without adding external relays. The UVR ensures the breaker drops out if control voltage falls below a set threshold — a standard requirement for safety circuits that need to isolate on loss of control power.
Integration and panel fit
The breaker measures 105 mm wide, 181 mm tall, and 86 mm deep — a standard MCCB footprint for a 160 A frame. It mounts on a DIN rail or directly to a backplate; the 3VA2 family uses the same mounting pattern as the earlier 3VA1 series, so a panel originally specified around a 3VA1020-2ED32-0DD0 can accept this breaker without rewiring, provided the busbar and lug kit match the 160 A frame. The undervoltage release requires a separate control voltage feed — verify polarity and voltage rating against the coil nameplate before energizing.