Circuit breaker refers to the switching device that can close, carry and disconnect the current under normal circuit conditions, and can close, carry and disconnect the current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high-voltage and low-voltage boundaries is relatively vague. Generally, those above 3KV are called high-voltage appliances.
The circuit breaker can be used to distribute electric energy, start the asynchronous motor infrequently, and protect the power line and motor. When they have serious overload, short circuit, undervoltage and other faults, it can automatically cut off the circuit. Its function is equivalent to the combination of fuse switch and over and under heating relay. Moreover, it is generally not necessary to change the parts after breaking the fault current. At present, it has been widely used.
Power distribution is an extremely important link in the generation, transmission and use of electricity. The distribution system includes transformers and various high and low voltage electrical equipment, and the low voltage circuit breaker is an electrical appliance with large amount and wide range of use.
working principle
The circuit breaker is generally composed of contact system, arc extinguishing system, operating mechanism, release, shell, etc.
In case of short circuit, the magnetic field generated by large current (generally 10 to 12 times) overcomes the reaction spring, the release pulls the operating mechanism to act, and the switch trips instantaneously. In case of overload, the current increases, the calorific value intensifies, and the bimetallic sheet deforms to a certain extent to promote the action of the mechanism (the greater the current, the shorter the action time).
Enclousers & Breakers
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Type Universal USB charger socket Charging Port 2 Ports Connection Universal USB charger socket Warranty 1 Year Combination Charger Socket Outlet Voltage 12-24v Model Number DS2014 Design Style New China-Chic Product name 4.2A Car Cigarette Lighter Socket Splitter Dual USB Charger Material ABS Input Voltage 12V-24V USB output 4.2A Size 3.7*5.4*2.9cm/1.5*2.12*1.14inch LED Blue LED Waterproof grade IP65 Working temperature Min.-20 Celsius Degree, Max. 80 Celsius Degree
VN1-40.5E medium-voltage AC vacuum circuit breaker is a new product designed by our company. The main circuit is with the solid insulated structure and uses the advanced epoxy resin sealed technology. Firstly it assembles a integrated sealed pole column with the vacuum interrupter, the main circuit, the insulated support and so on, which enhances the environment endurance of the vacuum circuit breaker. 1. The main circuit section and operating mechanism section is upper and lower arrangement, which optimize the electric field distribution, increase the insulated reliability, also reduce the circuit breaker depth direction size and reduce the matched switchgear depth greatly. 2. The live part of main circuit is cast in the epoxy resin cylinder, which make the interrupter be exempt from the environmental effect and the external mechanical force injury, also cause the circuit breaker no arc-over between phases and on the interrupter's surface and enhance the insulation of circuit breaker. 3.Current carries are fixed reliably in the position by the epoxy resin, do not need the extra fastener, reduce the number of accessories used for assembling circuit breaker pole columns, reduce the installation error and enhance the reliability of installing the circuit breaker. 4. As a result of using the sealed technology, the circuit breaker volume reduces greatly. The matched cabinet width is only 1200mm, heighten 2400mm, depth 2600mm. 5. The VN1 circuit breaker is based on the self-supporting structure of bottom plate, has overcome the primary contacts linking due to the circuit breaker submersion and also transport conveniently.
The Variable Speed Drive FRENIC series is equipped with functions and performance to meet all types of requirements, and in addition it is easily maintained and environmentally friendly. The series lineup ranges from simple to advanced-function models, enabling model choices matching situations for use. Fuji Electric provide Variable Speed Drives perfect for automating and with energy saving devices like a fan pump or carrier and variable speeds.
Photocells Fans & ventilation, Hazardous area lighting Industrial plugs & sockets Industrial & commercial Lamps Light fittings: fluorescent, weatherproof & floodlighting Refrigeration & air conditioning spares Water heating elements Wiring accessories MCB's Circuit breaker Vacuum Breakers Control transformers Fuses & load break devices Hazardous area products Industrial beacons Industrial sounders, buzzers Industrial surge protection Safety switches Clamp meters Multi-meters Testers Semiconductors: thyristors, rectifiers Pressure switches Solenoid & pilot valves Photoelectric Sensors
Product Description Residual current circuit breaker RCCB Rated current: 25A, 32A, 40A,50A,63A,80A,100A Rated sensitivity: 10mA, 30mA, 100mA,300mA Product Feature Feature (EBS6R Residual current circuit breaker ) 1. Electro-magnetic release, voltage independent 2. High ability of withstanding short circuit current Connection ( EBS6R RCCB ) Type of terminal: Lug type and pin type Cables up to 35mm2 Product Specification/Models Model: EBS6R RCCB ( Residual current circuit breaker ) Standard: IEC61008-1 Rated current In (A): 20A, 25A, 32A, 40A, 50A, 63A, 80A, 100A Rated voltage Ue (V): 2 poles: 230VAC 4 poles: 230/400VAC Poles: 2P, 4P Standard export carton
AC to DC converter battery charger 150-1000VDC rectifier 120KW power supply Product Introductionï¼? SANDI AC/DC Charger is specially developed for DC chargers. It has high efficiency, high power factor, high power density, high reliability advantage. AC input 3 phase, DC output voltage range from 150 to 1000VDC can be set, compliant with CE safety requirements, EMC standard EN61000-6-3 and EN61000-6-1 Class A, it is an advanced international level charger. Unique function High efficiency over the full load range, full load efficiency greater than 95% Wide output voltage range, 150-1000VDC, suitable for a wide range of Lithium or lead acid battery 5-inch LCD touch screen, easy to operate Flexible application, charging voltage, charging current, charging time, timing charging can be set by LCD screen, easy to operate Main featuresï¼? Powerful protection, overheating, short circuit, overload, overvoltage, undervoltage, etc. Wide input voltage range: 260~ 530Vac, adaptable to various power grid environments Three-phase AC input without neutral wire: Simplifies system design, eliminates the risk of excessive neutral current, and reduces system costs. Dual DSP design, achieve the full digital control, less components means high reliability Wide input voltage range, allows operation in most poor grid conditions Battery anti backflow: effectively protects the battery while ensuring reliable and safe operation of the system Input, output have protective circuit breaker switch Module adopts hot pluggable design, which is convenient for maintenance. RS485 interface (Optional)
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