General
Overload release current setting	42
Adjustment range undelayed short-circuit release	630
Switch off technique	Magnetic
Rated operating voltage	690
Rated permanent current Iu	42
Rated operation power at AC-3, 230 V	22
Rated operation power at AC-3, 400 V	22
Type of electrical connection of main circuit	Screw connection
Type of control element	Other
Device construction	Complete device in housing
Number of poles	3
Rated short-circuit breaking capacity lcu at 400 V, AC	50
Degree of protection (IP)	IP20
Height	142.65
Width	55
Depth	122.1
Power loss	5.47
With thermal protection
Phase failure sensitive
With integrated auxiliary switch
With integrated under voltage release

The MO165 short-circuit circuit breaker with electromagnetic protection represents the compact and powerful series for short-circuit protection of motors up to 45 kW (400 V) with a module width of 55 mm. The device has a rotary handle operation with a clear switch position indicator I/TRIP/0. The rotary handle can be locked directly in the 0 position using a padlock. Auxiliary and signal contacts as well as undervoltage and shunt current releases can be installed without tools. 3-phase rails for 125 A allow several devices to be fed together. Accessories for control cabinet installation complete the range.