Name: 115th China Import And Export Fair Time: April.15-April.19, 2014. Company:Yueqing Meba Electric Enterprises Booth number:4.1J21 Welcome to our booth. Meba Electric Enterprises participate in No.115 Canton Fair, major show Circuit Breaker, Contactor, Distribution Box, Surge Arrestor. Especial we take our new products electric accessories for PV system, like DC MCB, DC MCCB, DC Surge Arrestor, DC Fuse. Welcome new and old friends to visit us.Thanks.
There are three mechanisms provided in a single miniature circuit breaker to make it switched off. If we carefully observe the picture beside, we will find there are mainly one bi – metallic strip, one trip coil and one hand operated on – off lever. Electric electric current carrying path of a miniature circuit breaker shown in the picture is like follows: -First left hand side power terminal -Secondly bimetallic strip – Then electric current coil or trip coil -Then moving contact – then fixed contact -Lastly right had side power terminal. All are arranged in series. How to reset a circuit breaker or trip? There are two contacts one is fixed and the other moveable. When the current exceeds the predefined limit a solenoid forces the moveable contact to open (i.e., disconnect from the fixed contact) and the MCB turns off thereby stopping the current to flow in the circuit. In order to restart the flow of current the MCB is manually turned on. This mechanism is used to protect from the faults arising due to over current or over load. To protect against fault arising due to over heating or increase in temperature a bi-metallic strip is used. MCBs are generally designed to trip within 2.5 millisecond when an over current fault arises. In case of temperature rise or over heating it may take 2 seconds to 2 minutes for the MCB to trip.
Contactor is used for protection machine from the circuit which has a much lower power level than the switched circuit, also used to control electric motor, lighting, capacitor, heating. In fact, contactor is one electrically controlled switch, can used in many range voltage and thousands of Amps by AC or DC. It is for making breaking, frequently starting & machine interlocking device, it becomes the delay contactor, mechanical interlocking contactor, star-detla starter. With the thermal overload relay, it is combined into the electromagnetic starter. The contactor is produced according to IEC947-2, VDE0660 & BS5452.
Yueqing Meba Electric Enterprises,, is established in 2007, specialized in manufacturing, marketing and R&D of Mini Circuit breakers, Residual current circuit breakers, Mould Case circuit breakers, RCBO, AC Contactors, Thermal overload relay, Distribution boxes, Stabilizer, Junction box, KWH meter, Surge protective device, Pushbutton switch etc Low voltage appliances. Most of items are made under strict ISO:9001 quality control system, and are CE certified, meet the standard of IEC requirement.
Approval: CE CB SAA for Australia New Zealand market TUV for Australia New Zealand market ISO:9001 Quality control system .
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