Thermal links

K□F Series

K□F Series

Features

  • It is a non-resettable thermal link that uses a fusible alloy for its thermal element.
  • It is compliant with RoHS2.
  • Extremely simple construction ensures reliability, and hermetically sealed thermal element reduces deterioration with age.
  • It has superior thermal sensitivity.
  • It uses an insulating container.
  • Please feel free to ask us about cutting, forming, and taping of lead wire.
Lead length Dimensions(mm)
A B C D E
Regular K□F-C 6.0±0.3 38±3 1.5±0.1 1.8or below 0.53±0.05
Long K□F 6.0±0.3 68±3 1.5±0.1 1.8or below 0.53±0.05

Specification

Type No. Rated functioning temperature Tf(℃) Functioning temperature
(℃)
Holding temperature Th(℃) Maximum use temperature(℃) Maximum temperature limitTm(℃) Electrical rating
Ampere
(A)
Voltage
(V)
K1F 86 81±2 60 55 200 1.0 AC250
55 55 1.5 AC125
50 50 2.0 DC50
K2F 102 98±3 80 70 200 1.0 AC250
75 70 2.0 AC125
66 65 3.0 DC50
K3F 115 111±2 99 85 200 1.0 AC250
95 85 2.0 AC125
88 80 3.0 DC50
K4F 127 123±2 110 90 200 1.0 AC250
110 90 2.0 AC125
103 80 3.0 DC50
K13F 133 129±3 110 90 200 1.0 AC250
105 90 2.0 AC125
88 80 3.0 DC50
K5F 136 132±3 115 90 200 1.0 AC250
105 90 2.0 AC125
95 80 3.0 DC50

Safety standard information

Type No. Safety standard approval
PSE UL C-UL VDE CCC KC
K1F JET5823-32001-1002
(AC250V)
- - 40016219 2008010205277539
(AC250V)
SU05028-1000
(AC250V)
K2F JET5823-32001-1003
(AC250V)
E73591 E73591 40016219 2008010205277539
(AC250V)
SU05028-10001
(AC250V)
K3F JET5823-32001-1003
(AC250V)
E73591 E73591 40016219 2008010205277539
(AC250V)
SU05028-10001
(AC250V)
K4F JET5823-32001-1004
(AC250V)
E73591 E73591 40016219 2008010205277539
(AC250V)
SU05028-10004
(AC250V)
K13F JET5823-32001-1004
(AC250V)
E73591 E73591 40016219 2008010205277539
(AC250V)
SU05028-10004
(AC250V)
K5F JET5823-32001-1004
(AC250V)
E73591 E73591 40016219 2008010205277539
(AC250V)
SU05028-10004
(AC250V)
  • Functioning temperature is measured with silicone oil bath of which temperature is increased at the rate of 1℃/min.
    Detecting current is 0.1A or less.
  • Please feel free to contact us in regard of the details of safety standard approvals.