NYKG Series

Isolation Switch

（16-1600A）

Concise Efficient Safe Comprehensive

PRODUCT OVERVIEW

NYKG series isolation switches are a kind of switching devices mainly used for isolating the power supply, facilitating the switching operation, connecting and disconnecting small current circuits. They features high stability and easy operation, which are widely used in the fields of industry, commerce, residence and infrastructure to provide the necessary safety isolation when maintaining and repairing the fault in any forms. They play a vital part in the safety management of power systems.

PRODUCT CHARACTERITICS

Compliance with safety standards

Isolation switches meet safety standards and regulatory requirements, safeguarding the personnel and equipment safety.

Diverse and flexible options

Diverse current specifications, optional body operation and cabinet door external handle operation, with optional auxiliary contacts and cabinet door interlocking to meet the various needs of users.

Enhanced system maintenance

It is easy to disconnect the partial connection of the electrical system by using the isolation switches without affecting the power supply and operation of other parts, which is especially significant for large-scale and complex systems.

Reliable electrical performance

Excellent electrical isolation performance can safely disconnect the direct electrical connection between the electrical equipment and the power supply.It enhances the maintenance efficiency of electrical equipment and protects the safety of maintenance personnel.

Technical Parameters

NYKG1 Series Isolation Switch

>Model Rated operating voltage Ue(V) Number of poles Rated currentIn(A) Applicable altitude （m） Rated short-time withstand current Icw (kA) （kA/s）
NYKG1 AC230/AC400 1P 32、63、80、100 ≤2000 20/1
2P
3P
4P

NYKG3 Series Isolation Switch

>Model Rated operating voltage Ue(V) Casing current Inm(A) Rated currentIn(A) Rated insulation voltage Ui(V) Rated impulse withstand voltage Uimp(kV) Number of poles Rated short-circuit making and Breaking capacity Icm（kA） Rated short-time withstand current(kA/s) （kA/s）
NYKG3-100 AC400 100 16、20、25、32、40、 50、63、80、100 690 8 3P、 4P 8 5/0.3
NYKG3-160 160 63、80、100、125、160 17 10/1
NYKG3-250 250 180、200、225、250 800 17 10/1
NYKG3-630 630 315、400、500、630 40 20/1
NYKG3-1600 1600 800、1000、1250、1600 1000 10 105 35/1
Selection table

NYKG1 Series Isolation Switch

NYKG1 3P 16A
Product code Pole No. Rated current
NYKG1:
Small type Isolation Switch 		3P:3 pole
4P:4 pole		 16A、20A
25A、32A
40A、50A
63A、80A
100A

NYKG3 Series Isolation Switch

NYKG3 100 3P 16A Additional functions
Product code Casing current Pole No. Rated current Additional functions
NYKG3：
Isolation Switch 		100A
160A
250A
630A
1600A		 3P:3 pole
4P:4 pole		 16A、20A
25A、32A
40A、50A
63A、80A
100A、125A
160A、180A
200A、225A
250A、315A
350A、400A
500A、630A
800A
1000A
1250A
1600A		 J:Outside cabinet operation
F11:1 opened and 1 closed
F22: 2 opened and 2 closed

Technical Parameters


NYKG1 Series Isolation Switch

  • Rated operating voltage Ue（V）：AC230/400

    Number of poles：1P、2P、3P、4P

    Current shell frame Inm (A) ：32、63、 80、100

    Applicable altitude （m）：≤2000

    Rated short-time withstand current Icw (kA) （kA/s）：20/1

NYKG3 Series Isolation Switch

  • Rated operating voltage Ue（V）：AC400

    Current shell frame Inm(A) ：100

    Current shell frame Inm (A) ：16、20、25、32、40、 50、63、80、100

    Rated insulation voltage Ui(V)：690

    Rated impulse withstand voltage Uimp(kV) ：8

    Number of poles：3P、 4P

    Rated short-circuit making capacity Icm（kA）（kA）：8

    Rated short-time withstand current(kA/s) （kA/s）：5/0.3

  • Model：NYKG3-160

    Rated operating voltage (V)：AC400

    Current shell frame Inm(A)：160

    Current shell frame Inm (A) ：63、80、100、125、160

    Rated insulation voltage Ui(V)：AC690

    Rated impulse withstand voltage Uimp(kV)：AC8

    Number of poles：3P、4P

    Rated short-circuit making capacity Icm（kA）(kA)：17

    Rated short-time withstand current Icw (kA) (kA/s)：10/1

  • Model：NYKG3-250

    Rated operating voltage (V)：AC400

    Current shell frame Inm(A)：250

    Current shell frame Inm (A) ：180、200、225、250

    Rated insulation voltage Ui(V)：AC800

    Rated impulse withstand voltage Uimp(kV)：AC8

    Number of poles：3P、4P

    Rated short-circuit making capacity Icm（kA）(kA)：17

    Rated short-time withstand current Icw (kA) (kA/s)：10/1

  • Model：NYKG3-630

    Rated operating voltage (V)：AC400

    Current shell frame Inm(A)：630

    Current shell frame Inm (A) ：315、400、500、630

    Rated insulation voltage Ui(V)：AC800

    Rated impulse withstand voltage Uimp(kV)：AC8

    Number of poles：3P、4P

    Rated short-circuit making capacity Icm（kA）(kA)：40

    Rated short-time withstand current Icw (kA) (kA/s)：20/1

  • Model：NYKG3-1600

    Rated operating voltage (V)：AC400

    Current shell frame Inm(A)：1600

    Current shell frame Inm (A) ：800、1000、1250、1600

    Rated insulation voltage Ui(V)：AC1000

    Rated impulse withstand voltage Uimp(kV)：AC10

    Number of poles：3P、4P

    Rated short-circuit making capacity Icm（kA）(kA)：105

    Rated short-time withstand current Icw (kA) (kA/s)：35/1

Selection table


  • Product code ：NYKG1:Small isolation switch

    Pole code：3P: 3 pole 、4P: 4 pole

    Rated current：16A、20A、25A、32A、40A、50A、63A、80A、100A

  • Product code ：NYKG3: Isolation Switch

    Current shell frame ：100A、160A、250A、630A、1600A

    Pole code：3P:3P: 3 pole、 4P: 4 pole

    Rated current：16A、20A、25A、32A、40A、50A、63A、80A、100A、125A、160A、180A、200A、225A、250A、315A、350A、400A、500A、630A、800A、1000A、1250A、1600A

    Additional features：J:Outside cabinet operation、F11:1 opened and 1 closed、F22: 2 opened and 2 closed