Your current position: Products KAB30A-4AM


Model:  KAB30A-4AM

rated voltage:                   220V;

Over voltage protection:  260V

Under Voltage Protection:  170V

Overload Protection:          30A

Delay Time:                        3-5 mins

Power Supply Connection: 4 ways

Package:                             foam & gift box

Change Over Swich  can identify the power supply from different resources, and automatically recover after power failure, no manual switching.

Product Features

Ⅰ. 24 Hours with power

            Under the condition of  the frequent power-off, it can be switched automatically to 4 power supplies in sequence without manual

▲City Power        ▲Wind Power      


▲Solar Power       ▲Generator Power

Ⅱ. Visualized display

        The digital display shows the present working status clearly and conspicuously. 

 Power on display delay countdown, after start, display the normal voltage . 

Ⅲ. Adjustable delay time

       You can switch the delay time by the button, one click to choose 180s, press twice to choose 360s. 

Ⅳ. High Power

          Maximum protection range of change over switch is 170-260VAC, which protects the electrical appliances within the scope of protection from damage, so as to reduce the loss.

Product Specification 


 KAB 30A-4AM

 Rated voltage 


 Under voltage protection


 Over voltage protection


 Over load protection


 Delay time


 Power supply connection

 4 ways






 Foam & Gift box packing 

Packaging & Shipping 

Packaging Details: Blister Packing  

                              Customer Design Packaging Is Accepted

                                         The Order≥1000

Delivery Detail: In 45-55 Days after Payment


Payment Terms: 30% deposit in advance, balance 70% before shipment 

                               Sample Cost and Shipping Chaege to be Paid 100% in Advance

 Our Services

1.OEM  ( The under voltage, over voltage, delay time we can make according to yours.)

2. Competitive Price

3. Free Packaging Design. We have our own professional designers

4. Fast Delivery. Goods will be delivered in 45-55 days after payment

5. 100% QC and 100% AGEING  inspection before shippment

6. One Year Warranty

7.Good after-sale service is available.



1. The total power of connected electrical equipment shall not exceed therated power

2. Do not use this product in damp or not ventilated environment

3. Non-professionals do not open, change, repair the product

4. Poor cennection of the front terminal or poor connection of the plugmay cause a danger

About us

Konstar Electric Industrial Co., Ltd.

     Konstar is a high-tech company, engaged in power controller and electrical auto parts, including the voltage protector , battery tester and oxygen sensor.

    We have more than 20 years' experience in electronic industry, and group of excellent managers and technicians and skilled workers.


Q1. What is your terms of packing?

A: Generally, we pack our goods in neutral  brown cartons.

Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Q3. What is your terms of delivery?

Q4. How about your delivery time?
A: Generally, it will take 45to 55 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

Q5. What is your sample ?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.

Q6. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery

Q7: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
    2. We respect every customer as our friend and we sincerely do business and make friends with them,   no matter where they come from.

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