Surge Protective Devices

Protecting a facility with this parallel line is an excellent first line of defense in limiting high impulse transients to a level that is acceptable to most electronic equipment. These high-energy surge protection products are placed in parallel with panels that are susceptible to both externally and internally generated transients. Our wide range of products offers specific surge protection levels, voltage/phase configurations, and any mode protection requirement at any panel within your facility.
A web-based power quality monitor integrated within the ASCO SERIES 500 and 400 Surge Protective Devices
A true hybrid device offering a coordinated multi-stage system of suppression, integrating the fast response time of the SAD (Silicon Avalanche Diode) modules with the high-energy capability of the MOV modules. Superior clamping at surge current ratings up to 375kA per mode or 750kA per phase.​
 modular design with available surge current ratings from 160kA to 1000kA per phase.
Provides facility-wide surge suppression and EMI/RFI filtering at service entrance and distribution panels.
A modular or non-modular line available at surge current ratings up to 250kA per mode or 500kA per phase offering continuous protection from damaging transients and electrical line noise.
A modular surge protective device capable of diverting high-energy transients. The 460 incorporates either single or dual modules that contain multiple, large block MOVs.
A non-modular, surge protective device that incorporates the same design platform as the 460 SPD; high-energy capable, thermally protected large block MOVs and a similar assortment of accessories.
A surge protective device that offers high-end surge capability at a competitive price. The 430 uses thermally protected MOVs, provides EMI/RFI filtering in a package that focuses on basic features and reliable performance.
The 425 uses thermally protected MOVs, is designed in a NEMA 4X enclosure, and is tested as a UL 1449 Type 1 device, so it can be placed on the line or load side of the main disconnect.
A compact, non-modular design with surge ratings up to 50kA per mode or 50kA per phase. Includes LED status inducation, summary alarm contacts, and is housed in a weather resistant enclosure.
Available with surge current ratings up to 80kA per mode or 160kA per phase. Protects connected equipment against electric power line disturbances and transients in medium exposure locations.
Available with surge current ratings up to 25kA per mode or 50kA per phase.  Protects connected equipment against electric power line disturbances and transients in low exposure locations.
Surge suppressor designed to protect AC distribution panel circuits or 120V power supplies feeding sensitive electronic equipment.

ASCO Services Mission-Critical Care

Our comprehensive service portfolio extends beyond routine maintenance to include solution upgrades and technology training that ensure you get the most from your emergency power systems.
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