400W HPS MH Electronic Dimmable Ballast for Grow Light Bulb Lamp w/Cooling Fan

Features: Compatibility – 9 13/16″ x 4 5/16″ x 2 3/4″ 400W electronic ballast is designed for connecting with light to maintain the working current and help the light to provide stable brightness and increase the service life, fit for HPS & MH grow light and metal halide & high-pressure sodium bulbs to promote the growth of indoor plants Powerful Performance – Ballast features power output options of 150W,250W,400W and super lumens for ensuring the light to adjust the brightness and create optimal lighting environment, super lumens for achieving max. power up to 430W High Efficiency & Stable – Compared with magnetic ballasts, electronic ballasts feature energy-saving design to reduce input power more than 10% and help lights to provide stable lighting brightness without flickering Durable & Cooling Design – Strong aluminum construction for providing sturdiness, rust & corrosion resistance, can be used for a long time; cooling fan and aluminum shell for offering good heat dissipation and prolonging the service life Safe Protection – Overheating protection for stopping working when the operation temperature reaches to the maximum value, open/short circuit protection and built-in fuse for protecting critical components from circuit failure and ensuring safe running Specifications: Overall Dimension(LxWxH): 9 13/16″ x 4 5/16″ x 2 3/4″ (25 x 11 x 7 cm) Rate Power: 400W Voltage: 110 V to 240 V, 50/60 Hz Power Factor: >99% Output Levels: 150W/250W/400W/Super Maximum Power of Super Lumens: 430W (120V,240V) Matched Bulb Types: HPS / MH Total Harmonic Distortion(THD):