China Residual Current Circuit Breaker Knbl6-63

Sphere of application
KNBL6-63 series leakage breaker is suitable for the leakage protection of the line of AC 50/60Hz, rated voltage single phase 240V, rated current up to 63A. When there is human electricity shock or if the leakage current of the line exceeds the prescribed value, it will automatically cut off the power within 0.1s to protect human safety and prevent the accident due to the current leakage.
KNBL6-63 series leakage breaker can protect against overload and short-circuit. It can be used to protect the line from being overloaded and short circuited as well as infre-quent changeover of the line in normal situation. It complies with standard of IEC/EN61009-1 and GB16917.1.

Basic specification and main parameters

frame class

63A

Rated working voltage

240V

Rated frequency

50/60Hz

Rated working current

6,10,16,20,25,32,40,50,63A

Rated residual operating current

0.01,0.03A

Rated residual un-operating current

0.005,0.015

Sensibility

AC Type

Maximum operating time

In t≤0.4s , 5In t≤0.01

Instant release type

B,C type

Limiting value of un-operating current

6In

Rated limiting short-circuit current

10000A

Pole number

1P+N

Mechanical life

4000

Electric life

80000

The over-current tripping unit protection feature

Sequence NO.

Release

Test
current I/In

Start state

Tripping
time

Expected
restlt

1

C

1.13In

Cold state

t≤1h

Not tripping

2

C

1.45In

Start right after
the serial NO .
1 test

t<1h

tripping

3

C

2.55In

Cold state

1s

tripping

4

C

5In

Cold state

t≤0.1s

Not tripping

5

C

10In

Cold state

t<0.1s

tripping