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Thermal Fuse A’ssy
Ceramic

SW-3 Series

> Product Introduction > SW-3 Series

S.W.C Thermal Cutoff SW-3 Series Specification

Temperature rating

Cat NO. Tf Cutoff
temperature		 Th Tm K-mark UL C-UL VDE TUV CCC PSE
SW-302T  72℃  70℃+2℃,-2℃ 47℃ 120℃ ● □ □ □ □ □ □
SW-305T  77℃  77℃+0℃,-4℃ 52℃ 120℃ ● □ □ □ □ □ □
SW-309T  84℃  84℃+0℃,-5℃ 59℃ 150℃ ● □ □ □ □ □ □
SW-353T  93℃  93℃+0℃,-5℃ 68℃ 220℃ ● ● ● ● □ ● □
SW-304T  98℃  96℃+0℃,-2℃ 73℃ 220℃ ● □ □ □ □ □ □
SW-308T 100℃  100℃+0℃,-5℃ 75℃ 220℃ ● □ □ □ □ □ □
SW-310T 109℃ 109℃+0℃,-5℃  94℃ 190℃ ● □ □ □ □ □ □
SW-336T 110℃ 110℃+0℃,-5℃ 85℃ 230℃ ● ● ● ● □ ● □
SW-311T 121℃ 121℃+0℃,-5℃ 96℃ 230℃ ● ● ● ● □ ● □
SW-329T 128℃ 128℃+0℃,-5℃ 103℃ 270℃ ● □ □ □ □ □ □
SW-338T 144℃ 141℃+0℃,-5℃ 119℃ 290℃ ● ● ● ● □ ● □
SW-316T 152℃ 152℃+0℃,-4℃ 127℃ 290℃ ● ● ● ● □ ● □
SW-320T 167℃ 167℃+0℃,-4℃ 142℃ 290℃ ● ● ● ● □ ● □
SW-327T 184℃ 184℃+0℃,-6℃ 159℃ 300℃ ● ● ● ● □ ● □
SW-325T 195℃ 195℃+0℃,-6℃ 170℃ 300℃ ● □ □ □ □ □ □
SW-339T 216℃ 216℃+0℃,-6℃ 200℃ 370℃ ● □ □ □ □ □ □
SW-324T 228℃ 228℃+0℃,-6℃ 200℃ 370℃ ● □ □ □ □ □ □
SW-328T 240℃ 240℃+0℃,-6℃ 200℃ 370℃ ● ● ● ● □ □ □

●= Approved □ = Applied

Electrical rating

  • - Rated voltage : 250V, 240V
  • - Rated current : 20A /21A
  • - Frequency : 50 or 60Hz
  • - Maximum allowable interrupting current : 250V, ac 22.5A
  • - Transient Overload Current : dc current pulses, with an amplitude 300 A and a duration of 3 ms with 10 s intervals, are applied for 100 successive cycles through the current path.

Configuration

Appearance

dimension(mm) a b c d e
long 35.0 ±3.0 10.5 ±0.5 38.0 ±3.0 4.0 ±0.05 1.0
medium 22.0 ±3.0 10.5 ±0.5 28.0 ±3.0 4.0 ±0.05 1.0
short 18.0 ±3.0 10.5 ±0.5 23.0 ±3.0 4.0 ±0.05 1.0
special 65.0 ±1.0 10.5 ±0.5 40.0 ±1.0 4.0 ±0.05 1.0

Marking

  • On the body of each thermal fuse, marks should be printed as follows :
  • - Brand : S.W.C.
  • - Part number : SW - 3XXT
  • - Rating : voltage(250V), current(20 A), function temperature(℃)