Our MCB is an automatically operated electrical switch. Miniature circuit breakers are intended to prevent damage to an electrical circuit as a result of excess current. They are designed to trip during an overload or short circuit to protect against electrical faults and equipment failure.
Residual Current Circuit Breaker or RCCB is basically a gadget that senses current and disengages any low voltage (uneven current) circuit whenever a fault occurs. The main purpose of installing a Residual Current Circuit Breaker fundamentally is to protect people from electric shocks or death caused by them.
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A&S Construction Machinery Co., Ltd. supplies all types of Circuit Breakers. All the brands of Circuit Breakers we can provide: CAT Circuit Breakers, KOMATSU Circuit Breakers, JOHN DEERE Circuit Breakers, SANY Circuit Breakers, XCMG Circuit Breakers, VOLVO Circuit Breakers, HITACHI Circuit Breakers, SUMITOMO Circuit Breakers, LIEBHERR Circuit Breakers, DOOSAN Circuit Breakers, CASE Circuit Breakers, BOBCAT Circuit Breakers, KUBOTA Circuit Breakers, YANMAR Circuit Breakers, HYUNDAI Circuit Breakers, DAEWOO Circuit Breakers, etc. For other parts of the brands above, we can also provide cylinder liners, crankshafts, oil pumps, solenoid valves, solenoid coils, fuel injectors, batteries, radiators, compressors, gaskets and seals, mufflers, manifolds, turbochargers, hydraulic pumps, hydraulic motors, hydraulic valves, hydraulic couplers, bearings, reducers, bearing seats, gears, pulley, sprocket, coupling, drive shaft assembly, brakes, clutches, drive chains, actuators, alternators, cables, controllers, distributors, fuses and relays, harnesses, sensors, switches, gearcases, filters, counterweights, heater and A/C accessories, belts, etc.
Elevate your electrical system's safety and reliability with our Immersed Circuit Breaker. Designed for optimal performance, this advanced circuit breaker is immersed in a dielectric fluid, providing efficient cooling and superior interruption capabilities. Whether you're safeguarding industrial equipment or enhancing the protection of your power distribution network, our Immersed Circuit Breaker is the solution for robust and dependable circuit interruption. Key Features: High Breaking Capacity Enhanced Safety
Application 1.Electromagnetic leakage protection switch 2.Electronic leakage protection switch Advantage 1. Better temperature stability, can work stably at -15â??-100â?? 2. Nanocrystalline core has high permeability, low coercivity and low loss 3. Sensitive to weak leakage current, with good resistance to large current impact
NW12N13PEF2.0E Air Circuit Breaker Masterpact NW12N1: 1250 A, 3 poles, fixed trip unit and Motorized
MCB have short circuit protection, overload protection, and isolation Function Model:DZ47s 1P C type 1A rated current :1A breaking capacity:6kA
MCB have short circuit protection, overload protection, and isolation function Model:DZ47s 1P C type 16A
DZ47-125 Poles:2P Rated current:100A Breaking capacity:10KA
80% High Color Rendering Index Perfect Thermal Control with One body Diecasting Aluminum Housing Ultra-slim and light solution Adopting a temperd glass preventing from external shock High reliability with internal SMPS or AC direct drive IC Perfect solutions for wall washer, parking lot, tunnel light and high mast lights
HVD8 /LW8-40.5 type outdoor high-pressure sulfur hexafluoride circuit breaker is three-pole ac 50 hz, outdoor high voltage switch equipment, applicable to 40.5 kV power transmission and distribution system control and protection, can also be used to contact circuit breaker and movable capacitor group.
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
VED-12 series indoor high voltage vacuum circuit breaker is suitable for 12kV air-insulated indoor switchgear, used as protection and control unit of power equipment of industrial & mining enterprise. Due to the super excellence, it is especially suitable for locations where requires the frequent operation under rated working current or multiple breaking under short circuit breaking current. The circuit breaker adopts the integrated design of operating mechanism and circuit breaker body, servers as not only fixed installation, but also draw-out type equipped with a special propelling mechanism. VED-12 has two main types. One is Draw-out type. Model No. is VED-12D. The other is Fixed type. Model No. is VED-12F. Service conditions 1 Environment temperature:-15°C~+40°C; 2 Environment humidity: Daily average relative humidity:â?¤95%, monthly average relative humidity:â?¤90%; Daily average saturated vapor pressure:â?¤2.2Ã?10-3Mpa,monthly average saturated vapor pressure:â?¤1.8Ã?10-3Mpa; 3 Altitude: Not exceed 1000m; 4 Earthquake intensity: Not exceed°ree; 5 Service location: No water, flammable or explosive matter, chemical corrosive gas or drastic vibration.
Vacuum Circuit Breaker HVD7 40.5KV 1250A outdoor HV AC VCB from Hubei JUCRO Electric 1. Introduction HVD7 40.5KV 1250A outdoor HV AC vacuum circuit breaker VCB has many visual advantages like reasonable design, fashionable appearance, high safety and reliability, simple maintenance, long electric life. It is the ideal upgraded products of 35KV outdoor oil circuit breakers. HVD7-40.5 1250A vacuum circuit breaker is applicable for three-phase power system of AC 50HZ.It is used to make and break the load current ,overload current and short-circuit current. 2. Applicable environment 2.1The ambient temperature should be -30degree~ +40degree(-40degree in the frosty area); 2.2Altitude should not exceed 2000m(over 2000m is plateau type); 2.3The wind pressure should not exceed 700Pa(equal to wind speed 34m/s); 2.4Air pollution degree: 3,that of antifouling type:4; 2.5The installation site should be free from the fire, explosion, chemical corrosion and serious vibration.
Vacuum Circuit Breaker VCB HVD32 12KV 630A VCB from Hubei JUCRO Electric 1.General HVD32 12KV This vacuum circuit breaker VCB is three-phase AC 50Hz, rated voltage 12 kV outdoor high voltage switch equipment. It is mainly used to opening(closing) load current, overload current and short-circuit current. It is suitable to protect or control the city or village electrical power distribution system.
short circuit&earth fault indicator widely used in ABB/SIEMENS switchgears: 1. Short circuit alarming current: 100A to 1000A time delay 40ms 2. Earthing alarming current: 10A, 20A,30A,40A,60A±10% time delay 40ms 3. Temperature range : -25 to +70 4. Humidty range: â?¦95% 5. Earth lead length : 4m optional 6. Conduct optical fiber length 3.5m optional 7. Power supply: lithium battery 3.6V/2.45Ah 8. Auto-reset time : 7s,2hrs,4hrs,8hrs 9. Output relay : 125 V AC 1A, 30V DC 2A 10.Main controller dimension : 95*50*80mm 11.Cutting hole size : 91*44 mm 12.Protection class : Main Controller :IP40, Sensor:IP65
Electrical Circuit Breaker Box.
Small Breaker Box
1ï¼?General VS1 12KV vacuum circuit breaker VCB HVD1-12(VS1-12) type indoor AC HV vacuum circuit breaker VCB (hereinafter referred to as circuit breaker) are suitable for 12kV air-insulated indoor switchgears, used as protection and control unit of power equipment of industrial& mining enterprise. Due to the super excellence, it is especially for location where requires the frequent operation of rated working current or multi breaking short circuit current. The circuit breaker adopts the integrated design of operating mechanism and circuit breaker body, servers as not only fixed installation, but also the handcart unit through equipping with a special propelling mechanism. 2. Service conditions 3.1 Environment temperature:-15degree~+40degree; 3.2 Environment humidity: Daily average relative humidity:
