Internal Connection Diagram; Operating Characteristic Curves - Mitsubishi Electric NF50 Quick Start Manual

NF50 AND NF100 CIRCUIT BREAKER QUICK START MANUAL

6. INTERNAL CONNECTION DIAGRAM

NF50-SVFU
Power Power
source side source side
electromagnetic electromagnetic
apparatus apparatus
Leakage expressed Leakage expressed
NF100-HRU
Power source side
electromagnetic
apparatus
Leakage expressed
8
Mitsubishi Electric Automation, Inc.
Test button Test button
ZCT ZCT
Load side Load side
Sense Degree Sense Degree
Switching Means Switching Means
Test button
ZCT
Load side
Sense Degree
Switching Means

7. OPERATING CHARACTERISTIC CURVES

NF50-SVFU
4h
2h
1h
30min
20min
14min
10min
Max. （3A～30A）
6min
4min
2min
1min
30s
20s
10s
5s
Min.
2s
1s
0.5s
0.2s
0.1s
0.05s
0.02s
The extended tripping time
0.01s
100 135 200 300 400 500 600 700 1000
Current (% of rated current )
NF100-HRU
4h
2h
1h
30min
20min
14min
10min
Max. (60～100A)
6min
4min
Max. (50A)
2min
1min
30s
20s
10s
5s
Min
2s
1s
0.5s
0.2s
0.1s
0.05s
0.02s
0.01s
100 135 200 300 400
Current (% of rated current )
(UL 489)
Max. （40A～50A）
Instantaneous trip
1500 2000 3000 4000
(UL 489)
600 1000 1500 2000 4000
500 700 3000