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Tuesday, 06 January 2009
TCO Catalog >> NEC/Schott SEFUSE organic pellet and Uchihashi ELCUT eutectic thermal cutoffs
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Ratings
Part
Number
Rated
Functioning
Temperature
Tf (°C)
Cut-off
Temperature
(°C)
Th
Tc
(°C)
Tm
(°C)
Electrical Rating Approvals
Ampere
(A)
Voltage
(VAC)
UL
CSA
VDE
CCC
PSE
U21
102
98 ± 2
76
200
2
250
U22
115
112 ± 3
89
200
2.5
250
U23
130
126 ± 2
102
200
2.5
250
U24
133
130 ± 2
108
200
2.5
250
U28
139
135 ± 3
113
200
2.5
250
U25
150
145 ± 2
123
200
2.5
250
U26
169
165 ± 3
142
200
2.5
250
 
UL,C-UL:E50082, CSA: LR57404, VDE: 923000-1171-0011
Cut-off temperature is measured with silicone oil bath of which temperature is increased at the rate of 1° per minute. Detecting current is 0.1A or less.
Th and Tc are for C-UL(CSA) and CCC respectively.
 
Dimensions
Dimensions (mm)
Lead length A B C D E
Regular
55 ± 3
70 ± 3
5.7 ± 0.5 6.6 ± 0.5 2.5 ± 0.3 0.53 ± 0.02
Long
 
Technical Terms
  • Rated Functioning Temperature (Tf)
    The acceptable tolerance is +0,-10°C

  • Holding Temperature (C-UL&CSA:Th, CCC:Tc)
    The maximum temperature at which the thermal cutoffs may be maintained.

  • Maximum Temperature Limit (Tm)
    The maximum temperature at which an opened thermal cutoff does not reclose.

Notice: Please read Standard Specification and Instruction Manual for details of use.