NYKW2 Series
Intelligent Universal
Intelligent
Efficient
Safe
Comprehensive
PRODUCT OVERVIEW
NYKW2 series intelligent universal circuit breakers are mainly used to distribute electric energy and protect lines and power supply equipment from overload, undervoltage, short circuit, single-phase grounding and other faults. It adopts intelligent control unit with various protection modes to improve the reliability of power supply. It also has open communication interface for four remote control functions to meet the requirements of the control center and automation system.
NYKW2 series intelligent universal circuit breaker complies with GB14048.2 "Low-voltage Switchgear and Controgear—Circuit-breakers" and IEC60947-2 "Low-voltage Switchgear and Controlgear—Circuit-breakers" and other standards.
ZERO ARC
Adopts magnetic blowing arc extinguishing technology and multi-layer metal grating structure for arc extinguishing, and gratings are staggeredly arranged in "V" groove, which can effectively improve the arc voltage. Also, the side walls of the arc extinguishing chamber are made of gas-producing materials, which can increase the air pressure in the chamber and facilitate the arc into the arc extinguishing chamber to rapidly extinguish the arc, so that it becomes a zero-arc air circuit breaker.
HIGH BREAKING CAPACITY
Adopts dual structure of main and arc contacts, and the rated current is borne by the main contact, and the arc is borne by the arc contact, thus the burning damage caused by the arc to the main contact is very small.
Designed with new contact support, the electrodynamic repulsion force compensates for contact pressure, so that it has better dynamic and thermal stability. The gas-producing material wraps the movable and static contacts, and the high-pressure gas drives the arc to flow to the arc extinguishing chamber quickly, extending the service life of the contacts.
The main contact is comb-shaped and composed of a number of contacts in parallel to reduce the electrodynamic repulsion force and improve the heat dissipation effect, which is conducive to the improvement of product performance indicators (reliability, temperature rise, breaking capacity, etc.).
INTELLIGENCE
Relying on various sensor technologies, microelectronic technologies and various information transmission technologies, NYKW2 series intelligent circuit breakers integrate the functions of control, measurement and communication, which can better break and protect the circuit. It has a variety of protection functions suitable for different application scenarios in order to meet the requirements of control centers and automation systems, and realize the intelligent operation of circuit breakers.
ABUNDANT EXPANSION SPACE
Programmable relay signaling units, zone selective interlocking (ZSI), load monitoring, demand value measurement and other expansion units are available to meet the needs of different applications.
Technical Parameters
BASIC TECHNICAL PARAMETERS
| Model | Rated operating voltage Ue(V) | Rated insulation voltage Ui(V) 50Hz | Rated impulse withstand voltage Uimp(V) | Casing current Inm(A) | Rated currentIn(A) | Number of poles | Short-circuit breaking capacity | Rated short-circuit making capacity Icm(kA) (peak) | Rated short-time withstand current Icw(kA)/1s | N-phase rated current In(A) | |||||
| Rated ultimate short-circuit breaking capacity Icu(kA) | Rated operating short-circuit breaking capacity Ics(kA) | ||||||||||||||
| AC400V | AC690V | AC400V | AC690V | AC 400V |
AC 690V |
AC 400V |
AC 690V |
||||||||
| NYKW2-2000 | AC400、690 | AC1000 | AC12000 | 2000 | 630 | 3、4 | 85 | 50 | 65 | 40 | 187 | 105 | 65 | 40 | 100%In |
| 800 | 85 | 50 | 65 | 40 | 187 | 105 | 65 | 40 | |||||||
| 1000 | 85 | 50 | 65 | 40 | 187 | 105 | 65 | 40 | |||||||
| 1250 | 85 | 50 | 65 | 40 | 187 | 105 | 65 | 40 | |||||||
| 1600 | 85 | 50 | 65 | 40 | 187 | 105 | 65 | 40 | |||||||
| 2000 | 85 | 50 | 65 | 40 | 187 | 105 | 65 | 40 | |||||||
| NYKW2-3200 | 3200 | 2000 | 100 | 65 | 65 | 50 | 220 | 143 | 65 | 50 | |||||
| 2500 | 100 | 65 | 65 | 50 | 220 | 143 | 65 | 50 | |||||||
| 2900 | 100 | 65 | 65 | 50 | 220 | 143 | 65 | 50 | |||||||
| 3200 | 100 | 65 | 65 | 50 | 220 | 143 | 65 | 50 | |||||||
| NYKW2-4000 | 4000 | 3600 | 120 | 85 | 100 | 80 | 264 | 187 | 100 | 80 | 50%In | ||||
| 3600 | 120 | 85 | 100 | 80 | 264 | 187 | 100 | 80 | |||||||
| NYKW2-6300 | 6300 | 4000 | 120 | 80 | 100 | 65 | 264 | 165 | 100 | 65 | |||||
| 5000 | 120 | 80 | 100 | 65 | 264 | 165 | 100 | 65 | |||||||
| 6300 | 120 | 80 | 100 | 65 | 264 | 165 | 100 | 65 | |||||||
NYKW2 Series Controller Catalog
| Controller Model | NT-2L | NT-M | NT-2M | NT-3M | NT-2H | NT-3H |
| Display mode | Electronic display | Digital display | Digital display | LCD display | Digital display | LCD display |
| Overload long delay protection | ● | ● | ● | ● | ● | ● |
| Short-circuit short delay protection | 〇 | ● | ● | ● | ● | ● |
| Short-circuit instantaneous protection | ● | ● | ● | ● | ● | ● |
| Grounding fault protection | 〇 | ● | ● | ● | ● | ● |
| Current imbalance protection | - | - | 〇 | 〇 | 〇 | 〇 |
| Functional test | ● | ● | ● | ● | ● | ● |
| Fault memory | ● | ● | ● | ● | ● | ● |
| Signal contact output | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 |
| Thermal memory | ● | ● | ● | ● | ● | ● |
| Self-diagnostics | ● | ● | ● | ● | ● | ● |
| MCU operating indication | ● | - | - | - | - | - |
| Current columnar display | ● | - | - | - | - | - |
| Current measurement | - | ● | ● | ● | ● | ● |
| MCR and override tripping | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 |
| Load monitoring | - | 〇 | 〇 | 〇 | 〇 | 〇 |
| Fault status indication and value display | ● | ● | ● | ● | ● | ● |
| Voltage measurement | - | 〇 | 〇 | 〇 | 〇 | 〇 |
| Power factor | - | - | 〇 | 〇 | 〇 | 〇 |
| Power measurement | - | - | 〇 | 〇 | 〇 | 〇 |
| Electrical energy measurement | - | - | 〇 | 〇 | 〇 | 〇 |
| Communication function | - | - | - | - | ● | ● |
| Contact wear indication function | - | - | ● | ● | ● | ● |
| Zone selective interlocking | - | - | - | 〇 | - | 〇 |
| Harmonic measurement | - | - | - | 〇 | - | 〇 |
| Voltage protection | - | - | - | 〇 | - | 〇 |
| Memory of grid history parameters | - | - | 〇 | 〇 | 〇 | 〇 |
| Counting function | - | - | ● | ● | ● | ● |
Description： ● Standard function 〇 Optional function - Not supported
Selection table
| NYKW2 | 2000 | 3P | 630A | Model M | Drawer type horizontal wiring | Additional functions |
| Product code | Casing grade | Pole No. | Rated current | Intelligent controller | Installation method | Additional functions |
| NYKW2： Intelligent universal circuit breaker |
2000A 3200A 4000A 6300A |
3P:3 pole 4P:4 pole |
630A 800A 1000A 1250A 1600A 2000A 2500A 2900A 3200A 3600A 4000A 5000A 6300A |
2L type M type 2M type 3M type 2H type 3H type |
Fixed horizontal wiring Drawer type horizontal wiring Fixed vertical wiring Drawer type vertical wiring |
Under-voltage tripper No-voltage tripper External current transformer (3P+N) One lock and one key Two locks and one key Three locks and two keys Steel cable type mechanical interlocking |
Technical Parameters
Basic technical parameters
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：2000
Rated currentIn(A)：630
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：85（AC400V）；50（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：65（AC400V）；40（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：187（AC400V）；105（AC690V）
Rated short-time withstand current Icw(kA)/1s ：65（AC400V）；40（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：2000
Rated currentIn(A)：800
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：85（AC400V）；50（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：65（AC400V）；40（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：187（AC400V）；105（AC690V）
Rated short-time withstand current Icw(kA)/1s ：65（AC400V）；40（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：2000
Rated currentIn(A)：1000
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：85（AC400V）；50（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：65（AC400V）；40（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：187（AC400V）；105（AC690V）
Rated short-time withstand current Icw(kA)/1s ：65（AC400V）；40（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：2000
Rated currentIn(A)：1250
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：85（AC400V）；50（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：65（AC400V）；40（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：187（AC400V）；105（AC690V）
Rated short-time withstand current Icw(kA)/1s ：65（AC400V）；40（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：2000
Rated currentIn(A)：1600
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：85（AC400V）；50（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：65（AC400V）；40（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：187（AC400V）；105（AC690V）
Rated short-time withstand current Icw(kA)/1s ：65（AC400V）；40（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：2000
Rated currentIn(A)：2000
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：85（AC400V）；50（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：65（AC400V）；40（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：187（AC400V）；105（AC690V）
Rated short-time withstand current Icw(kA)/1s ：65（AC400V）；40（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：3200
Rated currentIn(A)：2000
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：100（AC400V）；65（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：65（AC400V）；50（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：220（AC400V）；143（AC690V）
Rated short-time withstand current Icw(kA)/1s ：65（AC400V）；50（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：3200
Rated currentIn(A)：2500
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：100（AC400V）；65（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：65（AC400V）；50（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：220（AC400V）；143（AC690V）
Rated short-time withstand current Icw(kA)/1s ：65（AC400V）；50（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：3200
Rated currentIn(A)：2900
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：100（AC400V）；65（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：65（AC400V）；50（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：220（AC400V）；143（AC690V）
Rated short-time withstand current Icw(kA)/1s ：65（AC400V）；50（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：3200
Rated currentIn(A)：3200
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：100（AC400V）；65（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：65（AC400V）；50（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：220（AC400V）；143（AC690V）
Rated short-time withstand current Icw(kA)/1s ：65（AC400V）；50（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：4000
Rated currentIn(A)：3600
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：120（AC400V）；85（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：100（AC400V）；80（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：264（AC400V）；187（AC690V）
Rated short-time withstand current Icw(kA)/1s ：100（AC400V）；80（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：4000
Rated currentIn(A)：4000
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：120（AC400V）；85（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：100（AC400V）；80（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：264（AC400V）；187（AC690V）
Rated short-time withstand current Icw(kA)/1s ：100（AC400V）；80（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：6300
Rated currentIn(A)：4000
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：120（AC400V）；80（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：100（AC400V）；65（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：264（AC400V）；165（AC690V）
Rated short-time withstand current Icw(kA)/1s ：100（AC400V）；65（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：6300
Rated currentIn(A)：5000
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：120（AC400V）；80（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：100（AC400V）；65（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：264（AC400V）；165（AC690V）
Rated short-time withstand current Icw(kA)/1s ：100（AC400V）；65（AC690V）
N-phase rated current In(A)：100%In
-
Rated operating voltage Ue(V) ：AC400、690
Rated insulation voltage Ui(V) 50Hz：AC1000
Rated impulse withstand voltage Uimp(V)：AC12000
Casing current Inm(A) ：6300
Rated currentIn(A)：6300
Number of poles ：3、4
Rated ultimate short-circuit breaking capacity Icu(kA) ：120（AC400V）；80（AC690V）
Rated operating short-circuit breaking capacity Ics(kA) ：100（AC400V）；65（AC690V）
Rated short-circuit making capacity Icm(kA) (peak) ：264（AC400V）；165（AC690V）
Rated short-time withstand current Icw(kA)/1s ：100（AC400V）；65（AC690V）
N-phase rated current In(A)：100%In
NYKW2 Series Controller Catalog
-
Display mode：Electronic display
Overload long delay protection：●
Short-circuit short delay protection：〇
Short-circuit instantaneous protection：●
Grounding fault protection：〇
Current imbalance protection：-
Functional test：●
Fault memory：●
Signal contact output：〇
Thermal memory：●
Self-diagnostics：●
MCU operating indication：●
Current columnar display：●
Current measurement：-
MCR and override tripping：〇
Load monitoring：-
Fault status indication and value display：●
Voltage measurement：-
Power factor ：-
Power measurement：-
Electrical energy measurement：-
Electrical energy measurement：-
Communication function：-
Contact wear indication function：-
Zone selective interlocking：-
Harmonic measurement：-
Voltage protection：-
Memory of grid history parameters：-
Counting function：-
-
Display mode：Digital display
Overload long delay protection：●
Short-circuit short delay protection：●
Short-circuit instantaneous protection：●
Grounding fault protection：●
Current imbalance protection：-
Functional test：●
Fault memory：●
Signal contact output：〇
Thermal memory：●
Self-diagnostics：●
MCU operating indication：-
Current columnar display：-
Current measurement：●
MCR and override tripping：〇
Load monitoring：〇
Fault status indication and value display：●
Voltage measurement：〇
Power factor ：-
Power measurement：-
Electrical energy measurement：-
Communication function：-
Contact wear indication function：-
Zone selective interlocking：-
Harmonic measurement：-
Voltage protection：-
Memory of grid history parameters：-
Counting function：-
-
Display mode：Digital display
Overload long delay protection：●
Short-circuit short delay protection：●
Short-circuit instantaneous protection：●
Grounding fault protection：●
Current imbalance protection：〇
Functional test：●
Fault memory：●
Signal contact output：〇
Thermal memory：●
Self-diagnostics：●
MCU operating indication：-
Current columnar display：-
Current measurement：●
MCR and override tripping：〇
Load monitoring：〇
Fault status indication and value display：●
Voltage measurement：〇
Power factor ：〇
Power measurement：〇
Electrical energy measurement：〇
Communication function：-
Contact wear indication function：●
Zone selective interlocking：-
Harmonic measurement：-
Voltage protection：-
Memory of grid history parameters：〇
Counting function：●
-
Display mode：LCD display
Overload long delay protection：●
Short-circuit short delay protection：●
Short-circuit instantaneous protection：●
Grounding fault protection：●
Current imbalance protection：〇
Functional test：●
Fault memory：●
Signal contact output：〇
Thermal memory：●
Self-diagnostics：●
MCU operating indication：-
Current columnar display：-
Current measurement：●
MCR and override tripping：〇
Load monitoring：〇
Fault status indication and value display：●
Voltage measurement：〇
Power factor ：〇
Power measurement：〇
Electrical energy measurement：〇
Communication function：-
Contact wear indication function：●
Zone selective interlocking：〇
Harmonic measurement：〇
Voltage protection：〇
Memory of grid history parameters：〇
Counting function：●
-
Display mode：Digital display
Overload long delay protection：●
Short-circuit short delay protection：●
Short-circuit instantaneous protection：●
Grounding fault protection：●
Current imbalance protection：〇
Functional test：●
Fault memory：●
Signal contact output：〇
Thermal memory：●
Self-diagnostics：●
MCU operating indication：-
Current columnar display：-
Current measurement：●
MCR and override tripping：〇
Load monitoring：〇
Fault status indication and value display：●
Voltage measurement：〇
Power factor ：〇
Power measurement：〇
Electrical energy measurement：〇
Communication function：●
Contact wear indication function：●
Zone selective interlocking：-
Harmonic measurement：-
Voltage protection：-
Memory of grid history parameters：〇
Counting function：●
-
Display mode：LCD display
Overload long delay protection：●
Short-circuit short delay protection：●
Short-circuit instantaneous protection：●
Grounding fault protection：●
Current imbalance protection：〇
Functional test：●
Fault memory：●
Signal contact output：〇
Thermal memory：●
Self-diagnostics：●
MCU operating indication：-
Current columnar display：-
Current measurement：●
MCR and override tripping：〇
Load monitoring：〇
Fault status indication and value display：●
Voltage measurement：〇
Power factor ：〇
Power measurement：〇
Electrical energy measurement：〇
Communication function：●
Contact wear indication function：●
Zone selective interlocking：〇
Harmonic measurement：〇
Voltage protection：〇
Memory of grid history parameters：〇
Counting function：●
Description： ● Standard function 〇 Optional function - Not supported
Selection table
-
Product code ：NYKW2： Intelligent universal circuit breaker
Casing grade：2000A/3200A/4000A/6300A
Pole No.：3P:3 pole/4P:4 pole
Rated current：630A/800A/1000A/1250A /1600A/2000A/2500A/2900A/3200A/3600A/4000A/5000A/6300A
Intelligent controller：2L type/Model M/2Model M/3Model M/2H type /3H type/
Installation method：Fixed horizontal wiring/Drawer type horizontal wiring/Fixed vertical wiring/Drawer type vertical wiring
Additional functions：Under-voltage tripper/No-voltage tripper/External current transformer (3P+N)/One lock and one key/Two locks and one key/Three locks and two keys/Steel cable type mechanical interlocking
TYSEN-SAE Electrical Co., Ltd. Jiangsu ICP File No.16025679