Sw8 630A-6300A Multifunction Circuit Breaker

Short Description:

  •  Intelligent universal low voltage circuit breaker (hereinafter referred to as circuit breaker), suitable for AC 50Hz, rated voltage up to 660V (690V), rated current 400A~6300A in the distribution network, used to distribute electric energy and protect lines and power equipment from overload, under-voltage, short circuit, single-phase grounding and other faults.
  • The circuit breaker has intelligent protection function and precise selective protection, which can improve the reliability of power supply and avoid unnecessary blackout.
  • At the same time with open communication interface, can be four remote, to meet the requirements of the control center and automation system.

Product Detail

Product Tags

• The circuit breaker's pulse voltage withstand is 8000V at an altitude of 2000m (different elevations are modified according to the standard, the maximum voltage is not more than 12000V).

• The circuit breaker can be used as isolator without intelligent controller and sensor, marked as " ".

• The circuit breaker conforms to GB14048.2 "low voltage circuit breaker for low voltage switchgear and control equipment" and IEC60947-2 "low voltage circuit breaker for low voltage switchgear and control equipment" and other standards.


1 according to the installation method

A. stationary

B. draw out

According to the number of poles: three poles, four poles

Divide by operation mode

A. Electric operation

B. Manual operation (for overhaul and maintenance)

Trip type

Intelligent controller, undervoltage instantaneous (or delay) trip, shunt trip.

Intelligent controller performance:

A. Intelligent controller is divided into: H type (communication type), M type (ordinary intelligent type), L type (economic type);

B. It has the functions of overload long delay reverse time, short delay reverse time, fixed time and instantaneous.

The protection features required can be set by the user;

C. Single-phase grounding protection function;

D. Display function: setting current display, action current display, each line voltage display (voltage display should be put forward when ordering);

E. Alarm function: overload alarm;

F. Self-testing function: overheating self-testing, microcomputer self-diagnosis;

G. Test function: test the action characteristics of the controller.

Service conditions

Normal service conditions of switchgear as follows:
Ambient temperature:
Maximum +40°C
Maximum 24 hour average +35°C
Minimum (according to minus 15 indoor classes) -5°C
Ambient humidity:
Daily average relative humidity less than 95%
Monthly average relative humidity less than 90%
Earthquake intensity less than 8 degree
Height above sea level less than 2000m

This product should not be used under conditions of fire, explosion, earthquake and chemical corrosion environments.

Technical specification

Model DW45-1000 DW45-2000 DW45-3200 DW45-4000 DW45-6300
IEC60947-2 GB/T14048.2
Shell frame level current Inm(A) 1000 2000 3200 4000 6300
Number of poles 3P 4P 3P 4P 3P 4P 3P 4P 3P 4P
Operating frequency (Hz) 50 50 50 50 50
Rated working voltage Ue(V) 400/690 400/690 400/690 400/690 400/690
Rated current +40ºC  In(A) 2,004,006,308,001,000 6,308,001,000,125,010,000,000 200,025,003,200 320,036,004,000 400,050,006,300
Rated insulation voltage Ui(V) 800 1000 1000 1000 1000
Rated impulse withstand voltage Uimp(kV) 8 12 12 12 12
Pole N rated current In(A) 100% 100% 100% 100% 100%
Breaking type - M H - -
Rated ultimate short-circuit segmentation capability Icu(kA) 400V 50 85 100 100 120
690V 30 50 65 65 80
Rated running short-circuit segmentation capability Ics(kA) 400V 35 50 65 65 65 80
690V 25 40 50 50 70
Rated short-time withstand current(effective value) Icw(kA) 400V 35(1s) 50(1S) 65(1S) 65(1S) 65(1S) 85(1S)
690V 25(1S) 40(1S) 50(1S) 50(1S) 65(1S)
Operating time (ms) Disjunction 23~32 23~32 23-32 23-32 23-32
Switch off <70 <70 <70 <70 <70
Flashover distance (mm) 0 0 0 0 0
Service life for mechanical Free of maintenance 15000 10000 5000 5000 3000
service life(times) Maintained 30000 20000 10000 10000 6000
Electrical life (times) 400V 6000 6500 3000 1500 500
900V 3000 3000 1500 750 300
Separating function (drawer type) O O O O O
Intelligent controller O O O O O
Pole N protection capability (only 4P and 3P+N) O O O O O
Connection And Installation:
Utilization category B B B B B
Installation category Circuit breaker(including the primary lateral line circle) IV IV IV IV IV
Auxiliary circuit (except for primary coil RB) III III III III III
Pollution degree 3 3 3 3 3
Connection mode Horizontal Vertical/Horizontal Vertical/Horizontal Vertical/Horizontal Vertical/Horizontal Vertical/Horizontal
Incoming line method Up/Down Up/Down Up/Down Up/Down Up/Down
Installation Method Fixed Type (3/4) Drawer Type(3/4) Fixed Type (3/4) Drawer Type(3/4) Fixed Type (3/4) Drawer Type(3/4) Fixed Type (3) Drawer Type(3/4) Fixed Type (3/4) Drawer Type(3)
Outline Dimension Width(W) 274/344 284/354 362/457 407/500 422/537 435/550 537 550/790 813/928 928
Depth(D) 289 373 373 461 363 494 424 494/504 504 504
Height(H) 315 362 402 432 402 432 402 432/452 433 433
O Standard Configuration O Optional -None

Technical specificationChart:

1.With drawable-breaker; 2.Fixed-breaker 3.Intelligent controller; 4.Operating mechanism; 5.Auxiliary contact
6.Locking-device 7.Arc chute; 8.Secondary connecting part; 9.Wire-cable mechanical interlock; 10.Connecting-rod type mechanical interlock;
11.Shunt release; 12.Closing electromagnet; 13.Under-voltage release 14.Motor-driven energy-storage mechanism; 15.Handle;
16.Fixed plate.

Single-phase earthing fault protection characteristic Single-phase earthing fault means the metal-property earthing protection when fault current exceeds several hundred amperes, which is generally applied

1.Auxiliary contacts: contacts that are mechanically connected with the main circuit dividing and closing mechanism of a circuit breaker. They are mainly used for displaying the dividing and closing states of a circuit breaker. They are connected to the control circuit of a circuit breaker and are controlled or interlocked by the circuit breaker.
2.Alarm contacts: Alarm contacts for circuit breaker accidents, and this contact only when the circuit breaker trips off and breaks, mainly for the load of the circuit breaker overload short circuit or undervoltage and other faults and free tripping, alarm contacts from the original normal open position to the closed position.
3.Excitation tripper: Excitation tripper is a kind of tripper driven by a voltage source. Its voltage has nothing to do with the voltage of the main circuit. Excitation tripper is an accessory for long-distance operation of switch-off.
4.Undervoltage tripper: Undervoltage tripper is a tripper that causes circuit breakers to open with or without delay when its terminal voltage falls to a specified range.
5.Electric Operator: This is an accessory for remote automatic switching and closing circuit breakers.
6.Extended handle: It is an external extended handle directly mounted on the handle of circuit breaker. It is generally used on large capacity circuit breakers of 600A and above for manual switching-off operation.
7.Handle locking device: a clamp is installed on the handle frame, punched on the handle, and then locked with a padlock. Mainly used for closing circuit breaker.


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