• Gcb Outdoor Sf6 Gas Circuit Breaker
  • Gcb Outdoor Sf6 Gas Circuit Breaker

Gcb Outdoor Sf6 Gas Circuit Breaker

Breaking Capacity: High Voltage Circuit Breakers
Operation: Electric Type
Speed: Normal Type Circuit Breaker
Arc-extinguishing Medium: SF6
Installation: Fixed
Structure: Circuit Breaker

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Diamond Member Since 2013

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Manufacturer/Factory & Trading Company

Basic Info.

Model NO.
Poles Number
Circuit Breaker
Overcurrent Protection
ISO9001-2000, CE
Transport Package
HS Code
Production Capacity

Product Description

GCB medium voltage circuit-breakers

For outdoor installation use sulphur hexafluoride gas (SF6) to extinguish the electric arc and as the insulating medium.

Breaking in SF6 gas takes place without current chopping or generation of overvoltages.

These characteristics guarantee a long electrical life for the circuit-breaker and limited dynamic, di-electric and thermal stresses on the installation.

The GSH type of stored energy and free release mechanical operating mechanism allows opening and closing operations through local and remote control.

The operating mechanism, the activating kinematics of the moving contacts and the anti-condensation heater are located inside a tight metal enclosure which also acts as the support for the poles.

The above-mentioned structure is supported by a frame made of telescopic metal sections which allow the height of the circuit-breaker terminal to be adapted from 2800 mm to 3700 mm.


The metal enclosure has IP 54(*) degree of protection and is fitted with a tight door with an inspection window.

The circuit-breaker is compact and ensures a high level of sturdiness and excellent mechanical reliability.

The enclosure is made out of a steel plate with adequate surface protection by a special metalising and painting process. The support structures are hot dip galvanised.

Main technical specifications:

Circuit-breaker on column GCB-12/24 GCB-36 GCB-40
Standards IEC 62271-100
Rated voltage Ur [kV] 12/24 36 40.5
Rated insulation voltage Us [kV] 12/24 36 40.5
Withstand voltage at 50 Hz Ud (1 min) [kV] 70 (dry) /
60 (wet)
95 (dry) /
80 (wet)
95 (dry) /
80 (wet)
Impulse withstand voltage Up [kV] 125/150 200 200
Rated frequency fr [Hz] 50-60 50-60 50-60
Rated normal current (400C) lr [A] 1250 2500 1250 2500 1250 2500
Rated breaking capacity Isc [kA] 25 25 25 25 25 25
31.5 31.5 31.5 31.5 31.5 31.5
Rated short-time Ik [kA] 25 25 25 25 25 25
withstand current (3 s) 31.5 31.5 31.5 31.5 31.5 31.5
Making capacity Ip [kA] 63 63 63 63 63 63
80 80 80 80 80 80
Operation sequence [O-0, 3s-CO-15s-CO]
Opening time [ms] 45+10 45+10 45+10
Arcing time [ms] 10-15 10-15 10-15
Total breaking time [ms] 55-60 55-60 55-60
Closing time [ms] 75+10 75+10 75+10
Overall dimensions on frame 3090 - 3840 3090 - 3840 3090 - 3840
H [mm]
L [mm] 900 900 900
P [mm] 686 686 686
Weight [Kg] 900 900 900
SF6 gas absolute pressure Rated service value [kPa] 380 380 550
Operating temperature (1) [0C] -25...+40 -25...+40 -25...+40
Tropicalisation IEC: 60068-2-30, 721-2-1
Electromagnetic compatibility IEC: 60694, 61000-6-2, 61000-6-4
Solar radiation [W/m2] 1000 1000 1000
Presence of pollution IEC 815 - table 1 Level III Level III Level III
Creepage distance [cm/kV] 2.5 2.5 2.75
Ice coating [mm] 10 10 10
Wind speed [m/s] 34 34 34
Earthquake resistance [g] 0.3 0.3 0.3
Static force on the terminals Longitudinal [N] 750 750 750
Transversal [N] 500 500 500
Vertical [N] 750 750 750
(1) For lower operating temperatures, please consult us.


Gcb Outdoor Sf6 Gas Circuit Breaker


1.The payment term: We accept TT,30% deposit and 70% balance against copy of BL.
2.The delivery time: Usually it will take about 15-20 days.
3.The standard of package: Usually use strong plywood case for protection.
4.The material of transformer: We have two types, one is with copper and another one is with aluminum. It depends on your requirement. In fact, those two have difference if normal work well. Only except the long life. Copper is better and also higher price.
5.The logo: If you have good quantity, it absolute no problem to do OEM.
6.Our market: our products are popular in Indonesia, Philippines, Russia, USA, Middle East and so on. Some of them are our regular customers and some of them are developing. We hope you can join us and make mutual benefit from our cooperation..
7.Warranty: in 12 month since BL date.


1.quick response in before sales period help you got order.
2.excellent service in production time let you know each step we made.
3.reliable quality solve you after sale headache.
4.long period quality warranty ensure you can buy without hesitate.


1. One-stop supplier globally.
2. More than 10 years professional experiences in electrical appliance industry. 
3.We offer professional online technology support for perfecting your electrical solution free.
4. Experienced sales service and suggestion.
5. All the products with accessories under strict quality control and final inspection before shipping.
6. We can assure the powerful competitive price and reliable quality products.
7. Most competitive shipping rate from our own shipping forwarder.
8. Warranty assurance: 12 month
9. Whatever big or small order, we can provide you one-to-one service.  


Contact person: Mr. Chen Chengming
 Gcb Outdoor Sf6 Gas Circuit Breaker

Your Best Choice for Electrical Appliances Industry!!!
Please leave an inquiry to know more details about Price , Packing ,Shipping and Discount.

Gcb Outdoor Sf6 Gas Circuit Breaker

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Contact Supplier

Diamond Member Since 2013

Suppliers with verified business licenses

Manufacturer/Factory & Trading Company
Year of Establishment
Management System Certification
ISO9001:2015, ISO14001:2015, ISO45001:2018 certificate