The Siemens 3VA1196-5ED16-0AA0 is a 1-pole molded case circuit breaker from the SENTRON family, rated 16 A continuous at 40 °C with a TM210 thermal-magnetic overcurrent release. It's designed for line protection — think feeder circuits in a control panel or distribution board where you need a compact, high-interrupting device.
The 3.53 W maximum power loss is low enough that you can pack several on a DIN rail without worrying about heat buildup in a sealed enclosure.
At 25.4 mm wide (1 inch), this single-pole breaker takes one standard module on a DIN rail. The IP40 front means the breaker's operating mechanism and terminals are protected against solid objects over 1 mm, but the back and sides are open to the panel interior for heat dissipation. Wire the line and load terminals with the torque spec from the device manual; the spring-cage or screw terminals (confirm variant) accept up to the rated conductor size for 16 A.