KJT heavy-duty limit switch is a mechanical control switch, which is used for conveyor belt deviation prevention, crane over-roll protection, and rope pull switch. Taking advantage of its high reliability, it is widely used in steel equipment, large conveying machinery, loading and unloading machinery and cement equipment. Resistant to harsh environments. The glass sealed contacts are filled with inert gas and are not affected by the environment. Resistant to vibration, impact, and wide range of applications.

standard	EN 60947-5-1
Comply with directives (Y/N)	Y
Meet safety features(Y/N)	N
Standard housing(Y/N)	N
raw material
- Raw materials for the shell	cast iron, galvanized
- Roller material	plastic
- Contact material	silver
Shell spraying	Coloring
weight	1655 g
Putter form	pulley
Mechanical parameters
Circuit connection instructions	screw connection
Cable cross section
- Minimum cable cross-section	1.5 mm²
- Maximum cable cross section	2.5 mm²
AWG number	13
Principle of action	Mechanical
Mechanical life	5.000.000 Number of operations
Operating element structure	roller rocker arm
rebound time	≤ 5 ms
switching time	≤ 35 ms
Normally open contact	2 x 2.5 mm
Operating speed in vertical switching axis direction
- Minimum operating speed	1 mm/min
- Maximum operating speed	3 m/s
- Angle of operation from the left side of the switch shaft	30°
- Angle of operation from the right side of the switch axis	30°
Notice	All cable cross-sections shown include conductors and lugs
Surrounding conditions
ambient temperature
- Minimum ambient temperature	−30 °C
- maximum ambient temperature	+90 °C
Protection level	IP65 according to IEC/EN 60529
Electrical parameters
Conversion component description	Normally open contact (NO), open (NC)
-Double break changeover contact
- Galvanically insulated contact bridge
Conversion principle	snap action switching element
number of closeers	1 item
Number of openers	1 item
Rated impact withstand voltage Uimp	4 kV
Rated insulation voltage Ui	250 V
Thermal test current Ithe	16 A
Application category	AC-15: 250 V / 4 A
Maximum insurance capacity	16 A D type glass insurance
size
Sensor size
- sensor width	106 mm
- sensor height	192 mm
- Sensor length	63 mm
Roller width	9 mm
Roller diameter	36 mm

     

NOTE Switch travel diagram   Contact closed   Contact open   Set range   breakpoint   Definitely opening order/angle VS   NO contact adjustment range VÖ  NC contact adjustable range N   After the trip