nader NDW3 Series Manual page 8

■ Installation Mode
■ Brief Description of Structure and Indications
14 13
12
■ Drawout Type Circuit Breaker Structure
Drawout type circuit breaker is composed of the circuit breaker and the drawer seat. The drawer seat has
guide rails on both sides. There's guide plate on the guide rail. The circuit breaker itself is placed on the left and
right guide plates. The drawout type circuit breaker connects to the main circuit by inserting the busbar on the
circuit breaker into the bridge contact on the drawer seat.
Partition
Guide
rail
Guide
plate
"Separation", "Test", "Connection" position
indication
 Drawout type circuit breaker "separation" position lock
Internal & confidential file
文件编号:NDT2920213
Fixed type
1
2
3
4
5
6
7
8
9
10
11
Drawer seat
Rocker operating
position
Three-position
locking
and unlocking
button
第 8 页 共 149 页
Drawout type
1. Reset button
2. Specification sign
3. Disconnected position
key lock (Optional function)
4. Nader sign
5. Disconnection button
6. Closing button
7. Counter (optional
function)
8. Energy releasing and
storing indicator
Note: 1 ~ 10 is fixed type, while 1 ~ 14 is drawout type.
Rocker and its storage
position
文件版本:17
9. Opening and closing indication
10. Nameplate
11. "Connection",
"Separation" position locking and
unlocking devices
12. Rocker operating position
13. "Connection", "Test"
"Separation" position indicator
14. Rocker and its storage position
Circuit breaker
body
Drawout type circuit breaker
"separation" position lock
"Test",
and