Thermal Overcurrent Circuit Breaker 1657-...

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050215

3

1

Thermal Overcurrent Circuit Breaker 1657-...

The time/current characteristic curve depends on the ambient temperature

prevailing. In order to eliminate nuisance tripping, please multiply the circuit

breaker current ratings by the derating factor shown below. See also section

Technical information.

Ambient temp. °F

Ambient temp. °C

+14

-10

+32

0

+50

10

+77

25

+95

35

+104

40

+122

50

+140

60

Derating factor

0.77 0.83 0.91

1

1.06

1.18

1.37

1.47

Typical time/current characteristics

Accessories

This is a metric design and millimeter dimensions take precedence ( mm )

inch

All dimensions without tolerances are for reference only. In the interest of improved design,

performance and cost effectiveness the right to make changes in these specifications

without notice is reserved.Product markings may not be exactly as the ordering codes.

Errors and omissions excepted.