5 Model Description
Flashover distance: No code with flashover; Code W without
flashover
Wiring method: No code with wiring in front of the plate; Code H
with wiring behind the plate, code C for plug-in connection, and
code CH for pull-out connection (only for 3 poles)
Application code: No code for power distribution; Code 2 for motor
protection
Internal accessory code (see Table 3)
Overcurrent release type (see Table 2)
Type of neutral pole (N pole) of 4-pole circuit breaker (see Table 1)
Number of poles of circuit breaker: 3 for 3 poles; 4 for 4 poles
Circuit breaker rated current In (A) (see Table 4)
Operation mode: No code for handle direct operation;
Code M for electrical operation;
Code Z for handle rotation operation
Short-circuit breaking capacity level: S — Standard type;
H — Advanced type; U — Current limiting type
Shell frame level rated current (A) (see Table 4)
No code for the non-delay type; Code Y for the delay type;
Code B for alarm without tripping
Only earth leakage (residual current) protection function is available
Design number
Molded Case Circuit Breaker
Enterprise code
Table 1
Code Type
Description
A
Type A The N pole is not equipped with an overcurrent release and is normally on,
and is not closed/opened with the other three poles.
B
Type B
The N pole is not equipped with an overcurrent release, and is
closed/opened with the other three poles.
Table 2
Code
Type
Description
1
Delay release
With the overcurrent inverse time limit protection
characteristic
2
Instantaneous
release
i.e. electromagnetic release
3
Complex release With the above two functions
Table 3
Inm
(A)
I
II
III
Notes
Code
Description
Code
Description
Code
Description
100
250
0
N/A
0~1
Number of
auxiliary
contacts
0~1
Number of
alarm contacts
1
Shunt trip
400
0
N/A
0~3
0~2
I
I+III≤
5
1
Shunt trip
0~1
0~1
I
I+III≤
2
2
Undervoltage
release
0~1
0~1
I
I+III≤
2
630
0
N/A
0~4
0~3
I
I+III≤
7
1
Shunt trip
0~2
0~2
I
I+III≤
4
2
Undervoltage
release
0~2
0~2
I
I+III≤
4
