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KJT-MD 441-11Y-T-2512 Heavy Duty Travel Limit Switch
KJT-MD 441-11Y-T-2512 Heavy Duty Travel Limit Switch

KJT-MD 441-11Y-T-2512 Heavy Duty Travel Limit Switch

  • ● :Actuator head repositionable4 x 90°
  • ● :metal shell
  • ● :360° continuous adjustment of lever position
  • ● :Lever can be rotated 180°
  • ● :In the temperature-resistant version, the rollers can be mounted in two different positions on the shaft
  • ● :106mm x 99mm x 63mm (basic assembly)
  • ● :Protection grade IP65

        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 sealing joint is filled with inert gas1


Product parameters
modelMD 441-11Y-M20TD 441-11Y-M20MD 441-11Y-T-M20MD 441-11Y-T-2512TD 441-11Y-2512
Principle of actionMechanicalMechanicalMechanicalMechanicalMechanical
Shell raw materialsGray cast iron, galvanizedGray cast iron, galvanizedGray cast iron, galvanizedGray cast iron, galvanizedGray cast iron, galvanized
Contact    materialsilversilversilversilversilver
gross weight1,650g1,675g1,695g1,650g1,845g
Normally closed quantity (NC)11111
Normally open quantity (NO)11111
B 10D normally closed contact (NC)2,000,000 operations2,000,000 operations2,000,000 operations2,000,000 operations2,000,000 operations
operating unitsroller leverroller leverroller leverroller leverroller lever
Roller materialplasticplasticbrassbrassBrass/Plastic (can be customized)
Mechanical life5,000,000 operations10,000,000 operations5,000,000 operations5,000,000 operations5,000,000 operations

action angle,

Counting from the left side of the switch shaft

30°30°30°30°30°

action angle,

Counting from the right side of the switch shaft

30°30°30°30°30°
contact open circuit2×2.5mm2×6mm2×2.5mm2×2.5mm2×2.5mm
Minimum drive speed1mm/分钟1mm/min1mm/min1mm/min1mm/min
Maximum action speed3m/sec3m/sec3m/sec3m/sec3m/sec
NoticeAction speed: Driving speed of the vertical drive angle switching axisAction speed: Driving speed of the vertical drive angle switching axisAction speed: Driving speed of the vertical drive angle switching axisAction speed: Driving speed of the vertical drive angle switching axisAction speed: Driving speed of the vertical drive angle switching axis
Circuit connectionScrew connection M20 x 1.5Screw connection M20 x 1.5Screw connection M20 x 1.5Screw connection M20 x 1.5Screw connection M20 x 1.5
Minimum cable cross-section1.5mm²1.5mm²1.5mm²1.5mm²1.5mm²
Maximum cable cross section2.5mm²2.5mm²2.5mm²2.5mm²2.5mm²
NoticeCable part: including conductor ferrulesCable part: including conductor ferrulesCable part: including conductor ferrulesCable part: including conductor ferrulesCable part: including conductor ferrules
Wire cross section13 AWG13 AWG13 AWG13 AWG13 AWG
Product Size
length, width and height63mm*106mm*237mm63mm*106mm*237mm63mm*106mm*237mm63mm*106mm*237mm63mm*106mm*192mm
Caster width9mm9mm9mm9mm9mm
Caster diameter36mm36mm36mm36mm36mm
Application environmental conditions
Protection levelIP65IP65IP65IP65IP65
ambient temperature-30 ... +90°C-30 ... +90°C‘-40 ... +200°C‘-40 ... +200°C‘-40 ... +200°C
Rated insulation voltage250 VAC400 VAC250 VAC250 VAC250 VAC
Rated impulse withstand voltage4kV6kV6kV4kV4kV
Electrical data
Thermal test current16A16A16A16A16A
Application categoriesAC-15: 250 V / 4 AAC-15: 400 V / 4 AAC-15: 250 V / 4 AAC-15: 250 V / 4 AAC-15: 250 V / 4 A
switching elementNormally open contact, normally closed contactNormally open contact, normally closed contactNormally open contact, normally closed contactNormally open contact, normally closed contactNormally open contact, normally closed contact
Switching principlequick actionslow movementquick actionquick actionquick action
Maximum bounce duration5 ms/5 ms5 ms5 ms
Maximum switching time35 ms/35 ms35 ms35 ms


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