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250SF/250SFK 500SF/500SFK
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Features
- It is realized current blocking capacity of 10kA at 500V which size is as same as a glass tube fuses of φ6㎜
- Space saving can be realized.
Rating
250SF / SFK
- Rated voltage and blocking capacity
- AC250V-10kA
DC250V(L/R10ms)-10kA - Minimum block-off current
- 250V AC/DC – 4 times the rated amperage
- Maximum arc voltage
- 500V
250SF is not cUL approved.
500SF / SFK
- Rated voltage and blocking capacity
- AC500V-10kA
DC500V(L/R2ms)-10kA - Minimum block-off current
- 500V AC/DC – 4 times the rated amperage
- Maximum arc voltage
- 1000V
- Read “FOR SAFE USE” and “PROTECT FUSE USER’S GUIDE” at the back of this catalog before use.
- A small fuse may generate a relatively large amount of heat, so a fuse with sufficient capacity is recommended for long, continuous use.
250SF/500SF
250SFK/500SFK
PDF Download UL standard approved rating
- Rated voltage and blocking capacity
- Same as the standard rating.
CCC standard approved rating
- Rated voltage and blocking capacity
- When applying the standard to CCC standard approved items, use the fuse in the following rating.
(250SF/SFK are not CCC approved.)
AC500V-50kA
DC500V(L/R10ms)-50kA
Rated Voltage
250SF/SFK: 250V
500SF/SFK: 500V
Rated Current
250SF/SFK: 10～25A
500SF/SFK: 10～20A
Cylinder Size(Estimated)
φ6.4×31
Installation Method
Clipped / Board soldered
RoHS Order
◯
Standard Approved
Specifications
250SF/250SFK
500SF/500SFK
Dimensions
250SF/500SF <Fig1>
250SFK/500SFK <Fig2>
Fusing Characteristics
250SF/250SFK
500SF/500SFK
Current-Limiting Characteristics
Temperature Rise
250SF/500SF
250SFK/500SFK
Power Loss
250SF/500SF
250SFK/500SFK
Shutdown I²t Against Working AC Voltage
Application to Direct-Current Circuit
