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