As we known,Molded Case Circuit Breaker main function is protection device from overload current and short circuit.It also have a several attachment device for additional protection that we can combine with MCCB. Common accessories used for MCCB such as phase insulation barrier,Shunt trip,Under voltage trip device,rotary handle and change over system.It can provide more protection [...]
As we know vacuum mean the the pressure is maintained below atmospheric pressure( unit : mm Hg ).So the manufacture made a research and development to design the vacuum circuit breaker based on current cannot jump in vacuum condition. Vacuum Circuit Breaker used the vacuum pressured to extinguish the current arc when it switching.Normally this [...]
For circuit breakers specification MUST suitable with installation condition and needed.Main switchboard is the main power supply distribution for factory or building.This unit is a key for entire electrical power supply distribution. Circuit breaker feed the high volume of voltage for all equipment and machine.It also have a high value of short circuit current due [...]
Low circuit breaker normally operating at 600 volt AC and below.The common used types of circuit breaker around the world such as molded case circuit breaker (MCCB) and Air circuit breaker ( ACB ). This low voltage circuit breaker usually used for power distribution and sub power distribution at factory and general industry.It a combination [...]
Circuit breaker is the important protection device for our application and electrical power supply system.It can save our equipment or machinery from damage from over current or overload matter.It also can save personal life who involve directly or indirectly with electrical application from electric shock. How we can know the actual condition and reliability for [...]
Overload relay is the one of important device for motor control.It can prevent our motor from overheat or winding burning due overload of ampere. We need to setting the value of overload relay properly depend on our application and motor full load ampere.If we setting low from FLA,it can cause motor trip c0ntinues and process [...]
A motor overload relay is an electro-mechanical relay that is operated by heat developed in the relay.When the level of current in a circuit reaches a preset value, the increased temperature opens a set of contacts. Overload relay should install in our motor starter application for extra protection.Overload relay can avoid serious damage for electric [...]
