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| Customization: | Available |
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| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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Overview
The circuit breaker is caused to trip after the dual metal sheets C45 and C65, which are on electrical appliances connected with the circuit in series, are deformed by heat generated from current when overloading. Compared with the fuse, it has a prominent advantage, that is, after the tripping, the thermal circuit breaker can be closed again, and can be used for protecting main on-off switches of equipment. However, the thermal circuit breaker has some disadvantages. Actually, the thermo-sensitive device may have bad effects due to the change of temperature. When operated in a cold environment, it shall be tripped only under a larger current, which may be dangerous. When operated in a hot environment, it will be tripped prematurely even under a smaller current, which may cause unnecessary shutdown.
Scope of application
CJD series hydraulic electromagnetic circuit breaker (hereinafter referred to as circuit breaker) is applicable for making and breaking operation for circuit or equipment in AC 50Hz or 60Hz electrical system with the rated voltage of 250V and the rated current of 1A-100A, and it is also applicable for protecting overload and short circuit of circuit and motor. The circuit breaker is widely used for computer and its peripheral equipment, industrial automatic device, telecommunication equipment, telecommunication powe supply and UPS uninterrupted power supply equipment, as well as railway vehicle, electrical system for ships, elevator control system and moveable power supply equipment etc. Especially it is applicable for locations with impact or vibration. The circuit breaker conforms to IEC60934:1993 and C22.2 standards.
Working And Installation Conditions
1.Environmental air temperature: Upper limit is +85°C and lower limit is -40°C.
2.The altitude shall be not higher than 2000m.
3.Temperature:The relative humidity of air at the installation and use location of circuit breaker shall not exceed 50% when the temperature is +85°C, The average lowest temperature in the wettest month shall not exceed 25°C, and the maximum relative humidity of the month shall not exceed 90%.
4.The circuit breaker can be installed at locations with prominent impact and vibration.
5.During the installation, the gradient of the circuit breaker with the vertical surface shall not exceed 5°.
6.The circuit breaker shall be used in locations without explosive medium and without gas or dust (including conductivedust) which may corrode metal or destroy insulation.
7.The circuit breaker shall be installed at locations without rainor snow.
8.The installation category of the circuit breaker is ll category.
9.The pollution degree of the circuit breaker is 3 grade.
Hydraulic Electromagnetic Circuit Breaker
It can effectively solve the most design problems of high precision, reliability, and cost. It has the advantages of thermal circuit breakers without their disadvantages. Taking the stability of temperature into consideration, the hydraulic electromagnetic circuit breaker is not influenced by the change of environmental temperature. The hydraulic electromagnetic sensing mechanism only responds to the change of current in the protection circuit. It neither has a "heating" cycle to slow response to overload, nor does it have a "cooling" cycle prior to its closing again after overloading. When exceeding 125% of the full load value, it will trip. The delaying time of the circuit breaker shall be long enough to avoid misoperation of tripping due to non-destructive instantaneous fluctuation. But when a malfunction occurs, the tripping of the circuit breaker shall be as fast as possible. The delaying time depends on the viscosity of the damping liquid and the degree of overcurrent, and it varies from several milliseconds to several minutes. With high precision, reliability, universal purpose, and solid functions, the hydraulic electromagnetic circuit breaker is the ideal device for automatic circuit protection and power conversion.
| Product model | CJD-30 | CJD-50 | CJD-25 |
| Rated current | 1A-50A | 1A-100A | 1A-30A |
| Rated voltage | AC250V 50/60Hz | ||
| Pole number | 1P/2P/3P/4P | 1P/2P/3P/4P | 2P |
| Wiring method | Bolt type, push-pull type | Bolt type | Push-pull type |
| Installation method | Installation before panel | Installation before panel | Installation before panel |
| Trip current | Operating time ( S ) | ||||
| 1In | 1.25In | 2In | 4In | 6In | |
| A | No-Trip | 2s~40s | 0.5s~5s | 0.2s~0.8s | 0.04s~0.3s |
| B | No-Trip | 10s~90s | 0.8s~8s | 0.4s~2s | 0.08s~1s |
| C | No-Trip | 20s~180s | 2s~10s | 0.8s~3s | 0.1s~1.5s |
CEJIA has over 20 years of experience in this industry and has built a reputation for providing quality products and services at competitive prices. We are proud to be one of the most reliable electrical equipment suppliers in China with more. We attach great importance to product quality control from raw materials procurement to finished product packaging. We provide our customers with solutions that meet their needs on a local level, while also giving them access to the latest technology and services available.
We are able to produce large volumes of electrical parts and equipment at very competitive prices in our state-of-the-art manufacturing facility located in China.
Q1:Are you a trading company or manufacturer?
A.We are professional manufacturer for low-voltage circuit breaker series products,Integrates research and development, manufacturing, processing and trade departments together. also we supply of different electrical and electronic items
Q2: why will you choice us :
A.more than 20years of professional teams will give you good quality products ,good service ,and reasonable price
Q3: Is the MOQ fixed?
A.The MOQ is flexible and we accept small order as trial order.
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