SDSA Surge Protective Devices (SPD)
The Square D SDSA Secondary Surge Arresters provides lightning and surge protection up to 40,000 amps, hard-wired devices are ideal for OEM’s, residential retrofit, and multi-unit construction projects.

• Maintenance-free, Long-life – Non-replaceable internal fuse link provides protection against varisitor-damaging sustained voltages. And the housing is made of a high temperature thermoplastic to ensure reliability in indoor and outdoor applications.
• Metal Oxide Varistor Design – Provides response time less than 50 nanoseconds and provides lower clamping voltage than traditional gas tube arresters
• Mounting Brackets – Two unique mounting brackets are available to make mounting easy for OEM and Multi-metering applications
• LED Status Indicator – Provide easy visual indication of device’s operational status
• UL and cUL Listed – Listed to UL 1449-Second Edition for TVSS and secondary surge arrester
• ANSI and IEEE – Approved for use in category B and C locations for use on grounded systems only
• Ideal Markets -- OEM’s, residential retrofit, and multi-unit construction projects