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126KV 252KV SF6 Circuit Breaker For Distribution Power

Basic Information
Place of Origin: XIAN
Brand Name: XG
Certification: ISO,CCC
Model Number: LW8...
Minimum Order Quantity: 1 SET
Packaging Details: WOODEN CASE
Delivery Time: 7-15 DAYS
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 2000 SET
Detail Information
Model: LW8……. Type: Indoor
Rated Voltage: 7.2kV, 12kV, 17.5kV, 24kV, 36kV, 40.5kV Rated Current: 400A 630A, 1250A, 1600A, 2000A, 2500A, 3150A,
Frequency: 50/60Hz Poles Number: 3
Phase: 3 Phase Medium: SF6
High Light:

252KV SF6 Circuit Breaker


Distribution Power SF6 Circuit Breaker


Indoor SF6 Circuit Breaker

Product Description

126KV 252KV SF6 Circuit Breaker Outdoor Gang Operation For Distribution Power Usage


1.126KV 252KV SF6 Circuit Breaker

SF6 circuit breaker is universal range of applications for the electrical system with elevation not greater than 2000m,ambient temperature not lower than -30℃,dirtiness grade not high than IV, alternating current 50Hz and the maximum voltage 126kV.

It is used for cutting the rated current, malfunction current or switching the circuitry, to control and protect the electrical system ,and it can also be used for connecting with the circuit breaker.

The gas of the SF6 is employed as the arc-extinguishing medium and the dielectric material. The self-extinction technology and the new-type spring operating mechanism are introduced in the SF6 circuit breaker. Thus the circuit breaker has good qualities with long electrical life, low operation power, lower noise, high reliability, simple structure, small and long overhaul periods. It can fully replace the same type one.


2.Parameter of 126kv 252kv SF6 Circuit breaker

No Name Unit Value
1 Rated voltage kV 252

Rated power frequency

withstand voltage (1min)

To earth 460
Between interrupter 460+146

Rated thunder impulse

withstand voltage

To earth 1050
Between interrupter 1050+206
4 Rated frequency Hz 50
5 Rated current A 4000
6 Amplitude factor   1.3
7 Rated short-circuit breaking current kA 50
8 Rated short-circuit making current(peak) kA 125
9 Rated current withstand current kA 50
10 Rated peak value withstand value kA 125
11 Rated short-circuit duration s 3
12 Rated out-of-phase breaking current kA 12.5
13 Breaking current of close-in fault kA 90%lk,75%lk
14 Rated line-charging breaking current A 200
15 Operating sequence   O-0.3s-CO-180s-CO
16 Resistance other main circuit μΩ ≤55
17 Rated gauge pressure of SF6(20℃) Mpa 0.6
18 Minimum functional gauge pressure(20℃) Mpa 0.550.015/0.50.015
19 Annual leakage rate of SF6   ≤0.5%
20 Amount of water of SF6(V/V) ppm ≤150
21 Mechanical life times 6000
22 Electrical level of radio interference μV <500
23 Creepage distance To earth mm ≥8660
Between interrupter ≥6900
24 Weight of the SF6 kg 24
25 Weight of the circuit breaker kg 1500


3.Application statment

A. The altitude above sea level does not over 2,000 meters;
B. Surrounding air temperature: -40 ºC ~+40 ºC ;
C. The wind speed is not bigger than 34m/s;
D. The air filthy should be with in III degree
E. Installing places: Not flammable, the explosion hazard, chemistry corrode place;
F. Does not have the regular fierce vibration


4.Product drawing



5. Product qualification




7. FAQ

1. How to order the products?

Send the inquiry with detail item description or with Model number. If there is no packing demand .we take it as sea-way packing.

2. About lead time and shipping time?

The lead time depend on quantity of order. Usually shipped by sea, small order or urgent order.we can send you by air after received your agreement.

3Life span of our XG brand?

Generally we promise two years quality guarantee, some products will be extended longer time for life span.


Contact Details

Phone Number : +8613319220197

WhatsApp : +8613319220197