ballast:

1.Physical Description:

Ballast is an iron-core inductor coil, the nature of the inductor coil when

the current changes, caused by magnetic flux in the coil will change,

resulting in induction electromotive force, its direction and

current in the opposite direction, thereby hampering the current changes.

It is used for the many kinds of lighting.

2.Standard & Voltages:

This kind is specially UL listed (American standard) with four gears,

like 120V,208V,240V,277V. It is very flexible and convenient for multiplex voltages' use.

3.Why you choose it? 

A. We professionally provide 70W up to 1000W, like 100W,150W,175W,400W,600W,1000W.

B. It specially for MH or HPS lamps.

C. This inductance ballast is more durable and everlasting than electronic ones.

4.Our Credit for you!

One year warranty! Good packing! High-quality! Professional guide for you!