Cautions in the Use of RCCB
RCCB, commonly known as leakage switch, can not only protect personal safety, but also supervise the insulation of low- ...
How to Select Contactors
Contactors are mainly composed of electromagnets and contacts. Contactors with larger capacity also have arc extinguishi ...
Reasons for Burn-out of Circuit Breakers
It has little to do with the electrical appliances in the house. Perhaps the rated current of the circuit breaker is too ...
Cautions and Requirements for Installation of Distribution Box
Distribution box is a low-voltage distribution device which assembles switchgear, measuring instruments, protective appl ...
Analysis and Treatment of Low Voltage Switch Faults in Distribution Box
Low-voltage switch belongs to the high-frequency electrical appliances in low-voltage electrical appliances. They are of ...
Initial Cause of Distribution Box Fire
First, the causes of distribution box fire mainly include the following four aspects: 1. Leakage fire: The so-called le ...
Switching of MCCB
Switches in MCCB have two main functions: they are usually used to set the main parameters such as trip current and lag ...
Moulded case circuit breaker requires reliable switching technology
MCCB is a kind of electrical protection device, which can be regarded as the "Big Brother" of MCB, which is often used i ...
What specific methods and precautions should be taken in the selection of moulded case circuit breaker
I. Application Scope and Usage of Molded Case Circuit Breakers Plastic case circuit breakers are widely used in distrib ...
Function of Molded Case Circuit Breaker Accessories
As a derivation and supplement of circuit breaker function, accessories add control means and expand protection function ...
Stop worrying about how to choose the type of moulded case circuit breaker
Molded Case Circuit Breaker is widely used in industry, agriculture, transportation, mining, civil construction and nati ...
Protection Function of Molded Case Circuit Breaker
(1) Short circuit protection Short-circuit protection is short-circuit instantaneous tripping. Attention should be paid ...
Main Functions of Molded Case Circuit Breaker
Moulded Case Circuit Breaker is also known as device type circuit breaker. All parts are sealed in plastic case, auxilia ...
Technical Requirements for Distribution Box in Electrical Industry
Different industries, different products have different technical requirements, in the electrical industry, distribution ...
What do AC-3 and AC-4 of AC contactors mean ？
Examples of Category Code and Typical Use AC-1 contactor is used to control inductionless or slightly inductive load an ...
How to choose the current of AC contactor and thermal relay ?
Under the condition of satisfying the voltage level, it is selected according to the current of the load. (1) The rated ...
What are the components of AC contactor ?
AC contactor mainly consists of four parts: (1) Electromagnetic system, including attraction coil, moving iron core and ...
How to Connect 380V AC Contactor ?
AC contactors 1L1, 3L2, 5L3 are contactor power supply side, connected with three-phase power supply. 2T1, 4T2 and 6T3 ...
What's the reason why AC contactor can't pickup ?
AC contactor can not pick, check whether the grid voltage is too low, whether the control line is falsely connected. If ...
Connection of 220V AC contactor ?
The working voltage of contactor coil, 380 or 220V, and what do you do? How much current should the main contact be? For ...
What's the use of AC contactor's NO and NC ?
When the contactor coil is not powered up, the auxiliary contacts of the contactor in the natural state have no conducti ...
Why should netural line and protective line busbars be set up separately in the distribution box ?
Protecting grounding bus mainly plays a protective role. Generally, it connects with grounding wire. Protecting groundin ...
What is the minimum protection level for outdoor distribution boxes ?
Choose different levels of protection in different environments. The protection level of outdoor distribution boxes req ...
Differences between Miniature Circuit Breakers and Moulded Case Circuit Breakers
1. Moulded case circuit breaker can be connected to thicker conductors, such as more than 35 square meters. Miniature ci ...
