Sf6 Circuit Breaker

Introduction The LWâ?¡-252/4000-50 self-extinction Ac circuit breaker which is outdoor type finds its universal range of applications for the electrical system with elevation not greater than 2000m, ambient temperature not lower than-30C, dirtiness grade not higher 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 import same type one. Caracteristic of structure The breaker introduces the three-phase porcelain -pole with single interrupter structure. A spring operating mechanism is supplied and the mechanical action of the three-phase is inner connected. The gas of the SF6 is connected in the three-phase pole parts. A density controller with temperature compensation is used to monitor the gas of the SF6. Because of the self-extinction arc control principle and optimized design, it improves the efficiency of mechanism and reduces the operating power Excellent breaking performance and long electrical life High mechanism reliability and can be operated frequently Because of the high insulation intensity and excellent contact movement, the breaking capacity current will not re-burn The circuit breaker has high outer insulation level and ratio creepage distance is greater than. So it has excellent performance of resisting the filth and the earthquake, it is also can be operated safely under the environment with atrocious weather High carrying ability: it has high capability margin as the temperature of each contact rises when it is under temperature rise test in the circuit (1.2 times 0f 4000A) The appearance of the breaker is compact, and the installation and debugging is very easy. The maintenance is also very convenient

Circuit breakers Lw-252 high voltage sf6 circuit breaker type Lw8a-40.5 outdoor porcelain post hv sf6 circuit breaker Lw36-126 high voltage sf6 circuit breaker Zn28-12 series indoor ac medium-voltage vacuum circuit breaker Zn63a-12 series indoor ac medium-voltage vacuum circuit breaker Nv1-24 series indoor ac high-voltage vacuum circuit breaker 252kv gis Lw3-12 outdoor ac medium-voltage sf6 circuit breaker Zw8-12 series outdoor ac medium-voltage vacuum circuit breaker Zw8-12(z) series outdoor intelligent ac mv vacuum circuit breaker Zw32-12 outdoor ac hv vacuum circuit breaker

Current range includes 11kv to 400 kv.

126kvporcelain shell for circuit breaker 126kvporcelain shell for circuit breakerIec gb772 High :1220m Creepage distance :3150mm Cantilever strength:35kn.M

Circuit breaker The circuit breaker mainly serves for protecting the circuits of ac 50 hz, 230vof single pole, 230v/400v of two poles and 400v of three or four poles from overload or short-circuit, and also for unfrequent making and breaking electrical apparatus and lighting circuit. Packed in export cartons

Standard rating: 1-20 ampere. Input power: 12 VDC /125 VAC / 250 VAC. Dielectric strength: 1500 VAC / 1 minute. Reset: manual push reset. Approvals: CSA, VDE, CSA C/US.

Terasaki, , square d, siemens, merlin gerin, qo, areva, sylvania, westinghouse, ge, murray, moeller, federal, schneider, zinsco, eta, cutler hammer, airpax, heinemann, klixon, hager. Miniature circuit breaker, air circuit breaker, electric circuit breaker, earth leakage circuit breaker, thermal magnetic circuit breaker, low voltage circuit breaker, molded case circuit breaker, vacuum circuit breaker, standard circuit breaker

Mini circuit breaker is suitable for wires of AC 50Hz, rated voltage of 400V,rated current of 32A(63A)D, with some protection functions such as leakage because of getting an electric shock, overload, short circuit, etc., and it can add over-voltage protection function according to users’ requirements. It mainly used in building lighting and protection of power distribution system. This product accords with IEC61009 and GB16917.1 standard.