General
Overload release current setting	20
Adjustment range undelayed short-circuit release	300
Switch off technique	Thermomagnetic
Rated operating voltage	690
Rated permanent current Iu	20
Rated operation power at AC-3, 230 V	7.5
Rated operation power at AC-3, 400 V	7.5
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	100
Degree of protection (IP)	IP20
Height	142.65
Width	55
Depth	122.1
Power loss	11.16
With thermal protection
Phase failure sensitive
With integrated auxiliary switch
With integrated under voltage release

Motor protection switch MS165 with thermal and electromagnetic protection represents the compact and powerful series with high short-circuit breaking capacity for motor protection up to 45 kW (400 V) with a module width of 55 mm. The temperature-compensated device has a rotary handle operation with a clear switch position indicator I/TRIP/0. In addition, MS165 has a short-circuit indicator. The rotary handle can be locked directly in the 0 position using a padlock. Auxiliary, signal and short-circuit signaling contacts as well as undervoltage and shunt current releases can be installed without tools. 3-phase rails for 125 A allow several motor protection switches to be fed together. Accessories for control cabinet installation complement the range. Atex certification allows the protection of motors in Ex areas, UL approval as >Self protected combination motor controller< expands the area of application in North America.