B-
B-
B-
B-4
4
4
4
3.
3.
3.
3. Type
Type
Type
Type Designation
Designation
Designation
Designation
BA M
8
- □ □ □ / □ □ □ □
Type of N-pole for 4-P breaker*
Application: Blank: for power distribution;
2: for motor protection
Release type and accessory code
Number of poles
Operation mode: Blank: direct operation with handle;
P: motor-driven operation;
Z: Operation with rotary handle
Code of breaking capacity: S-standard type;
H-higher class type
R-current limiting type
Frame size rated current
Design sequence number
MCCB code
Company code
Note *: There are 4 type of N-pole for 4P breaker
�
Without current release components, N-Pole is always at making status, not makes and breaks with other three poles;
�
Without current release components, N-Pole makes with other three poles (N-pole first makes then breaks);
�
With current release components, N-Pole makes and breaks with other three poles (N-pole first makes then breaks);
�
With current release components, N-Pole is always at making status, not makes and breaks with other three poles;
Table 1.
Release mode and Accessory code
Accessory
Release
mode
Accessory designation
Instantaneous
release
Compound release
No accessory
200
300
Alarm contact
208
308
Shunt release
210
310
Auxiliary contact
220
320
Under-voltage release
230
330
Shunt release, auxiliary contact
240
340
Shunt release, under-voltage release
250
350
Two sets of auxiliary contact
260
360