This EC 20 ballast is designed for UV systems from Aquacare and provides a stable power supply for UV lamps running at 50 Hz. It delivers even ignition and reliable operation, and is a good replacement part for a weakened or defective ballast. Its compact design makes it easy to fit in existing installations. Key benefits: Matched to Aquacare UV systems. Reliable and energy efficient at 50 Hz. Provides stable ignition and an even power supply. Easy to install and service. Please get in touch if you are unsure whether this ballast fits your system.