Telemecanique Acb Merlin Gerin Air Circuit Breaker 3p Dw45-2500A

Product Description

2500A  Telemecanique Acb Merlin Gerin Air Circuit Breaker 3p Dw45-2500A (SW1)

OEM SERVICE factory circuit breakers

1.1 Application scope

DW45 series air circuit breaker is suitable for the circuit of AC 50Hz/60Hz with rated service voltage 400V, 690V and rated service current up to 6300A.It is mainly used to distribute  electric energy and protect  circuits and electric equipment against  over-load, under-voltage, short-circuit and single-phase  earthing  fault.

With intelligentized  and selective protection functions,  the breaker can improve the reliability of power supply, and avoid unnecessary power failure.The breaker is applicable for power stations,  factories, mines (for 690V) and modern  high- buildings, especially for the distribution  system of intelligentized  building.

1.2 Standard:IEC/EN 60947-2.

 2.Operation conditions

2.1 Temperature condition:-5°C~40°C;The average value within 24h shall not exceed+35°C(special situation  excluded);

2.2 Altitude:≤2000m;

2.3 Pollution grade:Grade 3;

2.4 Air conditions:

At mounting site, relative humidity not exceed 50% at the max temperature of +40°C, higher relative humidity is

Allowable under lower temperature,

RH could be 90% at +20°C, special measures  should be

Taken to occurrence of dews;

2.5  Note:Without the  intelligent controller, the  breaker functions as a switch-disconnector.
 

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.

DW45 universal low-voltage air circuit breaker

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

To direct center earthing system.When earthing fault protection is definite time-delay acting, the setting is as follows: