A MCCB (molded case circuit breaker)
Do not use a circuit breaker for start/stop operation. When a ground fault interrupter is used, select the one with no influence for high frequency. Setting current should be 200mA or above and the operating time at 0.1 second or longer to prevent malfunction.

MC (magnetic contactor)
It is not always necessary to have the MC on the input side. However, an input MC can be used to prevent an automatic restart after recovery from an external power loss during remote control operation. Do not use the MC for start/stop operation.

AC REACTOR
When power capacity is significantly large compared to inverter capacity, or when the power factor needs to be improved, externally connect an AC reactor. Many VFD manufacturers install reactors in the drives. It is always a good idea to check.

Input Noise Filter
To comply with certain communication and interference regulations, input noise filters are to be installed. Many manufacturers include these filters.
Variable Frequency Drive
Wire input to terminals L1, L2 and L3 for three phase input. Make sure to connect the ground terminal to an appropriate safety ground.

Output Noise Filter (EMI Suppression)
When used with output noise filter, radiated and conducted emissions may be reduced. dT/dV filters protect motors from EMI and voltage transients output from the drive itself. Not required if the motor is “inverter” rated.
Motor
When multiple motors are driven in parallel with an VFD, the VFD rated current should be at least 1.1 times the total motor rated current. Make sure that the motor and the variable frequency drives are separately grounded.

A A frequency inverter is an electronic device which enables the conversion of an electrical variable "current",In three-phase motors, the speed and torque of the AC motor can be controlled by varying the frequency. This control does not restrict the performance of a three-phase motor, it just improves its efficiency.

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Waterproof electric product is customized product; all prices will depend on customer Marketing data and qty request, it will be difficult to provide it.

A Our standard delivery time will be 3~5day for sample, 1~2weeks for
large batch according to production volume and customer request.

A Bsumwell is a manufacturer with a mass production of 5000 sqm factory and a medium-size production for small-medium volume. 

A ABS is engineering-plastics.

A BSUMWELL distribution box is waterproof ,dustproof and moisture-proof.

A Because much smart

A We can arrange by Air,by express,by Sea,by Road.

A 1.Which payment can we use? A:T/T,Paypal,Western union,Cash,Escrow,L/C an so on.

A 1.Can we order 10pcs as sample order? A:No,for sample order,we only supply 1-2pcs. after test,then MOQ.:500PCS 2.Can we change the color? A:Yes,Black and White color MOQ.500Pcs,The other colors MOQ.3000Pcs. 3.Can we make our Logo on product? A:Yes,MOQ:1000PCS,also please give us the brand letter. 4. How long for manufacturing once we place order? A:Manufacturing time always is within 30days after get payment. 5. How long to receive 1 samples? A:Within 3days after get payment.