Surge Protective Devices


ASCO 500 SERIES Surge Protective Devices

ASCO 500 SERIES Surge Protective Devices are designed with strict industry requirements in mind. This diverse family of products uses patented surge technology to provide survivability and exceptional performance in the most extreme conditions. With a variety of technology, monitoring and packaging solutions, each model within the ASCO SERIES 500 can be tailored to meet your specific requirements.


ASCO 400 SERIES Surge Protective Devices

ASCO 400 SERIES Surge Protective Devices – formerly known as the Advanced Protection Technologies (APT Surge) brand – are UL listed, Type 1 family of surge protectors designed around the latest thermally protected MOV technology. This platform of products is available in any voltage and phase configuration and offers a wide range of surge levels and optional accessories. The compact design and robust performance make the 400 Series products an ideal choice for reliable, high-energy protection.


ASCO 300 SERIES Surge Protective Devices

ASCO 300 SERIES Surge Protective Devices are UL listed, non-modular family of surge protectors. The ASCO 300 SERIES incorporates thermally protected MOVs, has a surge capacity up to 80kA per mode and is available in a variety of voltage and phase configurations.