Surge Backup Protection Circuit Breaker

NYKU1H-I Series Class T1 (15-25KA)

NYKU1H Series Class T2 (10-120KA)

Concise Efficient Safe Comprehensive

PRODUCT OVERVIEW

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.

PRODUCT CHARACTERISTICS

Effectiveness

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.

Accuracy

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.

High safety coefficient

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.

Compliance with the specification requirements

Complies with national and international electrical safety standards, ensuring legality and reliability and boosting user confidence.

Technical parameters

NYKU1H-I series surge backup protection circuit breaker technical parameters

Model specification NYKU1H-I 15 NYKU1H-I 25
Rated operating voltage Ue 230V/400V
Rated insulation voltage Ui 400V
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

NYKU1H series surge backup protection circuit breaker technical parameters

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

NYKU1H-I Series Surge Backup Protection Circuit Breaker

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
Selection table

NYKU1H-I Series Surge Backup Protection Circuit Breaker

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 SeriesSurge Backup Protection Circuit Breaker

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

Technical Parameters


Surge Backup Protection Circuit Breaker

  • Model specification ：NYKU1H-I 15kA/NYKU1H-I 25kA

    Rated operating voltage Ue：230V/400V

    Rated insulation voltage Ui：400V

    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

Selection table


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

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