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

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
  • Product Detail

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
model MD 441-11Y-M20 TD 441-11Y-M20 MD 441-11Y-T-M20 MD 441-11Y-T-2512 TD 441-11Y-2512
Principle of action Mechanical Mechanical Mechanical Mechanical Mechanical
Shell raw materials Gray cast iron, galvanized Gray cast iron, galvanized Gray cast iron, galvanized Gray cast iron, galvanized Gray cast iron, galvanized
Contact    material silver silver silver silver silver
gross weight 1,650g 1,675g 1,695g 1,650g 1,845g
Normally closed quantity (NC) 1 1 1 1 1
Normally open quantity (NO) 1 1 1 1 1
B 10D normally closed contact (NC) 2,000,000 operations 2,000,000 operations 2,000,000 operations 2,000,000 operations 2,000,000 operations
operating units roller lever roller lever roller lever roller lever roller lever
Roller material plastic plastic brass brass Brass/Plastic (can be customized)
Mechanical life 5,000,000 operations 10,000,000 operations 5,000,000 operations 5,000,000 operations 5,000,000 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 circuit 2×2.5mm 2×6mm 2×2.5mm 2×2.5mm 2×2.5mm
Minimum drive speed 1mm/分钟 1mm/min 1mm/min 1mm/min 1mm/min
Maximum action speed 3m/sec 3m/sec 3m/sec 3m/sec 3m/sec
Notice Action speed: Driving speed of the vertical drive angle switching axis Action speed: Driving speed of the vertical drive angle switching axis Action speed: Driving speed of the vertical drive angle switching axis Action speed: Driving speed of the vertical drive angle switching axis Action speed: Driving speed of the vertical drive angle switching axis
Circuit connection Screw connection M20 x 1.5 Screw connection M20 x 1.5 Screw connection M20 x 1.5 Screw connection M20 x 1.5 Screw connection M20 x 1.5
Minimum cable cross-section 1.5mm² 1.5mm² 1.5mm² 1.5mm² 1.5mm²
Maximum cable cross section 2.5mm² 2.5mm² 2.5mm² 2.5mm² 2.5mm²
Notice Cable part: including conductor ferrules Cable part: including conductor ferrules Cable part: including conductor ferrules Cable part: including conductor ferrules Cable part: including conductor ferrules
Wire cross section 13 AWG 13 AWG 13 AWG 13 AWG 13 AWG
Product Size
length, width and height 63mm*106mm*237mm 63mm*106mm*237mm 63mm*106mm*237mm 63mm*106mm*237mm 63mm*106mm*192mm
Caster width 9mm 9mm 9mm 9mm 9mm
Caster diameter 36mm 36mm 36mm 36mm 36mm
Application environmental conditions
Protection level IP65 IP65 IP65 IP65 IP65
ambient temperature -30 ... +90°C -30 ... +90°C ‘-40 ... +200°C ‘-40 ... +200°C ‘-40 ... +200°C
Rated insulation voltage 250 VAC 400 VAC 250 VAC 250 VAC 250 VAC
Rated impulse withstand voltage 4kV 6kV 6kV 4kV 4kV
Electrical data
Thermal test current 16A 16A 16A 16A 16A
Application categories AC-15: 250 V / 4 A AC-15: 400 V / 4 A AC-15: 250 V / 4 A AC-15: 250 V / 4 A AC-15: 250 V / 4 A
switching element Normally open contact, normally closed contact Normally open contact, normally closed contact Normally open contact, normally closed contact Normally open contact, normally closed contact Normally open contact, normally closed contact
Switching principle quick action slow movement quick action quick action quick action
Maximum bounce duration 5 ms / 5 ms 5 ms 5 ms
Maximum switching time 35 ms / 35 ms 35 ms 35 ms


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