At 400 V AC the breaking capacity is 25 kA Icu, which still covers the majority of industrial service-entrance and sub-distribution scenarios. The TM-D thermal-magnetic trip unit provides fixed overload protection (thermal) and short-circuit protection (magnetic), with a long-time pickup fixed at 1 In (63 A). This is a no-adjustment design — set the breaker to the cable or load rating and it runs. Rated insulation voltage (Ui) is 690 V, and operational voltage (Ue) is 440 V AC. The IP40 front face and IK07 impact resistance handle accidental tool contact and light mechanical shock during installation.
Mounting is fixed (backplate) with a 25 mm connection pitch — standard for panel-mounted MCCBs. The front-connect design (both upside and downside connections are front) means busbar or cable connections are accessible from the panel face, not the rear. Dimensions are 130 mm height, 75 mm width, 60 mm depth, which fits a standard distribution board cutout. The toggle control provides clear visual indication of tripped vs. ON/OFF status. Electrical durability is 4000 cycles at 415 V In/2 per EN/IEC 60947-2; mechanical durability is 13000 cycles per the same standard. For high-cycle applications (frequent switching of a motor circuit), consider whether the electrical endurance matches the duty cycle.