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A surge protective device is designed to protect electrical equipment or installations from voltage spikes by blocking unwanted voltages above a safe threshold. Typical applications include AC power distribution, drive line filtering, and control panel protection.
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Surge Protective Devices
Category Selection
Surge protective devices (SPDs) are designed to protect electrical and electronic equipment from damage caused by voltage spikes created by lightning strikes, switching transients, and inductive coupling. They are typically used in the following industrial applications:
- Protect power distribution equipment from surges that can be caused by lightning strikes, switching transients, and other disturbances.
- Protect communications systems, such as serial lines and LAN cables, from surges that can disrupt operations
- Protect PLCs, HMIs, and sensors from surges that can cause malfunctions.
- Protect motor control systems, such as VFDs and starters, from surges that can damage motors and other components.
For part listings and specifications, go to Shop Now
Surge Protection Devices
Surge protection devices protect electrical equipment from transient voltage spikes and surges in power, control, PLC I/O, and data and signaling applications. Type 1 through 4 SPDs are available in panel and DIN-rail mounting styles with ratings up to 600 VAC and 20 kA nominal discharge current.
- Mersen compact enclosed surge protectors protect inside or outside power or equipment panels.
- DEHN modular surge protectors offer DIN rail mounted protection for all common electrical power system configurations, field or intrinsically safe devices, and telecommunication or data networks.
Surge Protection Accessories
Replacement protection modules, monitoring units, and mounting accessories are available for select surge protection devices.
- Replacement protection modules are mechanically coded to ensure against installing an incorrect module, and they can be easily replaced without tools by simply pressing the user-friendly module release button
- DEHNrecord monitoring units for use with DEHN BLITZDUCTORconnect SPDs
- Wall and panel mounting brackets
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