What the ratings mean for fit
The Siemens SENTRON 3VA2116-5HL36-0CH0 is a 3-pole molded case circuit breaker rated 160 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. That flat thermal curve is unusual; most breakers start tapering above 40 °C. The 160 A frame is sized for feeder or large motor branch circuits where the load current stays under that number. Breaking capacity is the headline: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. The 187 kA figure at 240 V means this breaker can safely interrupt a fault up to that level without welding contacts or venting plasma — critical for high-fault installations like transformer secondaries or large motor control centers. At 690 V the 3.7 kA rating is modest; this is not the breaker for a 690 V high-fault panel. The breaker is designed for line protection (cable/feeder protection per IEC 60947-2), not motor protection. It ships with an undervoltage release (UVR) and provisions for 2 auxiliary switches plus 1 trip alarm switch. The UVR means the breaker trips when control voltage drops — common in safety circuits that need a guaranteed disconnect on power loss.
Panel integration and mounting
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — a standard SENTRON 3VA2 frame footprint. Mounts on a DIN rail or panel-mount via the base. The 86 mm depth leaves clearance for rear-connected busbars in a typical distribution panel. 28 W maximum power loss at rated current means ventilation slots in the enclosure are adequate; no forced cooling required unless the panel is densely packed.