Surge Backup Protection Circuit Breaker
NYKU1H-I Series Class T1 (15-25KA)
NYKU1H Series Class T2 (10-120KA)
Concise
Efficient
Safe
Comprehensive
Surge Backup Protection Circuit Breaker
NYKU1H-I Series Class T1 (15-25KA)
NYKU1H Series Class T2 (10-120KA)
NYKU1H series surge backup protection circuit breakers are mainly used to protect electrical appliances or power equipment from surges. It features fast response and low impedance, and can introduce high voltage and overcurrent to the ground in a very short time to protect the backup equipment and lines, which is especially significant for environments requiring a high degree of reliability and data security.
Compared with conventional MCB protection solutions, the residual voltage at both ends is lower when a surge occurs, thus the equipment can be better protected.
When there is lightning current in the SPD, the device will not be mistakenly tripped, ensuring that the lightning protection of electrical equipment is always effective.
Selectively disconnects the passing industrial frequency current and lightning current, which can effectively avoid SPD from fused short-circuits, and avoid causing serious fire accidents.
Complies with national and international electrical safety standards, ensuring legality and reliability and boosting user confidence.
| Model specification | NYKU1H-I 15 | NYKU1H-I 25 |
| Rated operating voltage Ue | 230V/400V | |
| Rated insulation voltage Ui | 500V | |
| Number of poles | 1P、2P、3P、4P | |
| Category of adaptation to SPD | Category I (T1) | |
| Waveform | 10/350us | |
| Impulse current limp | 15kA | 25kA |
| Nominal discharge current In | 15KA/25kA | 15KA/25kA |
| Current tripping value Io | 3A±1A | |
| Breaking time of industrial frequency short-circuit current Tos | ≤40ms | |
| Breaking time of industrial frequency load current Tos | ≤50ms | |
| Model specification | NYKU1H-10 | NYKU1H-20 | NYKU1H-40kA | NYKU1H-60kA |
| Rated operating voltage Ue | 230V/400V | |||
| Rated insulation voltage Ui | 500V | |||
| Number of poles | 1P、2P、3P、4P | |||
| Category of adaptation to SPD | Category II (T2) | |||
| Waveform | 8/20us | |||
| Maximum discharge current Imax | 10kA | 20kA | 40kA | 60kA |
| Nominal discharge current In | 5kA | 10kA | 20kA | 30kA |
| Current tripping value Io | 3A±1A | |||
| Breaking time of industrial frequency short-circuit current Tos | ≤40ms | |||
| Breaking time of industrial frequency load current Tos | ≤50ms | |||
| Model specification | NYKU1H-80kA | NYKU1H-100kA | NYKU1H-120kA |
| Rated operating voltage Ue | 230V/400V | ||
| Rated insulation voltage Ui | 500V | ||
| Number of poles | 1P、2P、3P、4P | ||
| Category of adaptation to SPD | Class II（T2） | ||
| Waveform | 8/20us | ||
| Maximum discharge current Imax | 80kA | 100kA | 120kA |
| Nominal discharge current In | 40kA | 50kA | 60kA |
| Current tripping value Io | 3A±1A | ||
| Breaking time of industrial frequency short-circuit current Tos | ≤40ms | ||
| Breaking time of industrial frequency load current Tos | ≤50ms | ||
| NYKU1H | I | 15kA | 4P |
| Product code | Use category | Maximum impulse current | Number of poles |
| NYKU1H： Surge Backup Protection Circuit Breaker |
I:Class T1 | 15kA 25kA |
1P:1 pole 2P:2 pole 3P:3 pole 4P:4 pole |
| NYKU1H | 10kA | 4P |
| Product code | Maximum discharge current | Number of poles |
| NYKU1H： Surge Backup Protection Circuit Breaker |
10kA 20kA 40kA 60kA 80kA 100kA 120kA |
1P:1 pole 2P:2 pole 3P:3 pole 4P:4 pole |
Surge Backup Protection Circuit Breaker
Model specification ：NYKU1H-I 15kA/NYKU1H-I 25kA
Rated operating voltage Ue：230V/400V
Rated insulation voltage Ui：500V
Number of poles：1P、2P、3P、4P
Category of adaptation to SPD：Class I （T1）
Waveform：10/350us
Impulse current limp：15kA/25kA
Nominal discharge current In：15kA、25kA/15kA、25kA
Current tripping value Io：3A±1A
Breaking time of industrial frequency short-circuit current Tos：≤40ms
Breaking time of industrial frequency load current Tos：≤50ms
Model specification ：NYKU1H- 10kA/NYKU1H-20kA/NYKU1H-40kA/NYKU1H-60kA
Rated operating voltage Ue：230V/400V
Rated insulation voltage Ui：500V
Number of poles：1P、2P、3P、4P
Category of adaptation to SPD：IClass I （T2）
Waveform：8/20us
Maximum discharge current Imax：10kA/20kA/40kA/60kA
Nominal discharge current In：5kA/10kA/20kA/30kA
Current tripping value Io：3A±1A
Breaking time of industrial frequency short-circuit current Tos：≤40ms
Breaking time of industrial frequency load current Tos：≤50ms
Model specification ：NYKU1H- 80kA/NYKU1H-100kA/NYKU1H-120kA
Rated operating voltage Ue：230V/400V
Rated insulation voltage Ui：500V
Number of poles： 1P、2P、3P、4P
Category of adaptation to SPD：IClass I （T2）
Waveform：8/20us
Maximum discharge current Imax：80kA/100kA/120kA
Nominal discharge current In：40kA/50kA/60kA
Current tripping value Io：3A±1A
Breaking time of industrial frequency short-circuit current Tos：≤40ms
Breaking time of industrial frequency load current Tos：≤50ms
Surge Backup Protection Circuit Breaker
Product code ：NYKU1H:Surge Backup Protection Circuit Breaker
Use category：I:Class T1
Maximum impulse current：15kA、25kA
Number of poles：1P:1 pole、2P:2 pole、3P:3 pole、4P:4 pole
Product code ：NYKU1H:Surge Backup Protection Circuit Breaker
Maximum discharge current ：10kA、20kA、40kA、60kA、80kA、100kA、120kA
Number of poles：1P:1 pole、2P:2 pole、3P:3 pole、4P:4 pole