160 A continuous, flat across the temperature range
The Siemens SENTRON 3VA2216-5MN32-0BH0 is a 3-pole molded case circuit breaker (MCCB) rated for 160 A continuous current from 40 °C through 70 °C — no derating needed across that span, per the datasheet. That flat thermal curve simplifies panel design: you don't have to oversize for elevated ambient temperatures inside a crowded enclosure. Breaking capacity is 121 kA at 415 V, dropping to 75.6 kA at 500 V and 4.5 kA at 690 V. At 240 V it holds 187 kA. These are the values for selectivity coordination downstream of a transformer or upstream of a distribution board — the 121 kA at 415 V is the figure to check against your available fault current.
Motor protection design with integrated undervoltage release
This MCCB is explicitly designed for motor protection, with phase failure detection built in. It ships with an undervoltage release (UVR) as the auxiliary release, plus a 2-auxiliary-switch + 1 trip-alarm-switch configuration. The UVR means the breaker trips on loss of control voltage — standard practice for motor circuits that must not auto-restart after a dip. The basic switch assembly carries order code 3VA2216-5MN32-0AA0. Maximum power loss is 22.2 W — relevant for thermal management inside the panel. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C.
Panel fit: 105 mm wide, 86 mm deep, 181 mm tall
Dimensions are 105 mm wide, 86 mm deep, 181 mm tall. That 105 mm width is a standard 3-pole MCCB footprint for this class — verify the mounting hole pattern against your existing backplate or DIN-rail adapter if retrofitting.