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Protect power from 120–600 V AC
UL 1449 Type 1 devices with 35–50 kA surge ratings and 100–200 kA SCCR, available in 1P to 4P configurations for common distributions.
Why ISPD?
Surges are a leading cause of unplanned outages. Siemens Industrial Surge Protection Devices (ISPDs) shield power and signal circuits across your plant to keep production running and sensitive electronics safe. DIN‑rail designs with replaceable modules and remote contacts make installation simple and maintenance fast.The portfolio covers AC 120–600 V, DC 24 V, and PV up to 1500 V plus UL‑listed signal protection, fitting retrofits and new builds as NEC expectations evolve.
Key benefits
Reduce unplanned downtime
Mitigate surges across AC, DC and signal paths to protect drives, PLCs and instrumentation so production stays on track and assets last longer.
Simplify system maintenance and upgrades
Swap surge modules or add protection for additional circuits without rewiring, thanks to modular design and DIN-rail mounting.
Support versatile applications with one solution
Cover AC, DC and signal-line protection from main power feeds to control wiring and data links with a single integrated portfolio.
Featured capabilities
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Guard DC control and PV strings
24 VDC protection for controls plus 1000 V and 1500 V options for solar applications, all with replaceable modules for fast restoration.
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Secure critical signal lines
UL 497B devices in slim 6.2 mm widths for 5, 12, 15 and 24 V with options for 4–20 mA loops, Fieldbus and Cat 6 communications.