Here is your selection guide for finding the correct circuit protection for your needs.
To Order:
Trip Curve -
A your circuit breaker part number will end in a
-5 ( 5SY4125-5 )
Trip Curve -
B your circuit breaker part number will end in a
-6 ( 5SY4125-6 )
Trip Curve -
C your circuit breaker part number will end in a
-7 ( 5SY4125-7 )
Trip Curve -
D your circuit breaker part number will end in a
-8 ( 5SY4125-8 )
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Tripping characteristic A, -5
- Type A characteristic is designed
- to protect very sensitive
- circuits such as
- semiconductors. Magnetic
- trip point - 2 to 3 times In rating.
- Thermal trip point - 1.13
- to 1.45 protector rating
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Tripping characteristic B, -6
- Type B characteristic designed
- for European residential
- circuit protection.
- This characteristic can also
- be used for protection of
- computers and electronic
- equipment. Magnetic trip
- point - 3 to 5 times In rating.
- Thermal trip point - 1.13 to
- 1.45 protector rating.
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Tripping characteristic C, -7
- Type C characteristic is for
- general device protection in
- control circuits. Magnetic
- trip point - 5 to10 times In rating.
- Thermal trip point - 1.13
- to 1.45 protector rating.
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Tripping characteristic D, -8
- Type D characteristic is designed
- for high inrush loads.
- Magnetic trip point - 10 to 20
- times In rating. Thermal trip
- point - 1.13 to 1.45 protector
- rating.
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