What this MCCB carries and where it fits
The Siemens SENTRON 3VA2116-5HN32-0CL0 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. It is designed for line protection in distribution panels, switchboards, and motor control centers where a high-interrupting MCCB is specified. Breaking capacity reaches 187 kA at 240 V AC and 121 kA at 415/440 V, dropping to 75.6 kA at 500 V and 3.7 kA at 690 V — the 690 V figure is low, so verify coordination if the fault level at that voltage exceeds it. Dimensions are 105 mm wide, 181 mm high, 86 mm deep, which is the standard 3VA2 frame footprint for panel cutout and busbar spacing.
Integrated auxiliaries and releases
This variant ships with an undervoltage release (UVR) and a full complement of signaling contacts: two auxiliary switches, one trip alarm switch, and one electrical alarm switch (HQ type). The UVR ensures the breaker trips when control voltage drops below a threshold — common for emergency-stop chains or mains-failure protection. The auxiliary switch set provides status feedback for PLC or SCADA inputs. The basic switch assembly is order code 3VA21165HN320AA0, meaning the main contact and arc chamber are a replaceable subassembly if the breaker takes a fault and needs refurbishment rather than full replacement. Maximum power loss is 28 W at rated current, which matters for thermal management in a sealed enclosure.
Environmental and storage limits
Operating temperature range is -25 °C to 70 °C; storage range extends from -40 °C to 80 °C. The storage minimum is the handling limit — the breaker can sit in a cold warehouse or truck without damage. No IP rating is listed in the spec set, so it is intended for indoor panel installation, not washdown or outdoor exposure.