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.
Motor protection design with integrated undervoltage release
This MCCB is explicitly designed for motor protection, with phase failure detection built in. 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.