Eaton Electrical
SP1 Surge Protective Device

Key Features

  • Type 1 SPD capable of installation on either the line or the load side of the service entrance disconnect
  • 20 kA nominal discharge current rating (In) on most models
  • 50 kA per phase surge current capacity
  • Compact footprint— 4.80-inch L x 2.90-inch W x 2.50-inch D
  • Pre-wired with 24.00 inches of 10-gauge wire 
  • Half-inch nipple molded into enclosure enables quick and easy mounting
  • Optional kit enables wall or DIN rail mounting
  • Two-year warranty

Standards and Certifications

  • UL 1449 3rd Edition-listed device

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Eaton‘s SP1 is a UL 1449 3rd Edition-listed surge protective device that provides reliable, cost-effective surge protection. This Type 1 SPD is capable of being installed on either the line or the load side of the service entrance disconnect, and can be used as a replacement for devices formerly known as secondary surge arresters or lightning arresters, which could not be manufactured after UL 1449 3rd Edition went into effect on September 29, 2009. The unit is available in many common voltages and configurations. Multiple mounting options coupled with a compact footprint enables installation of the SP1 in a wide range of applications, including panelboards, loadcenters, pump panels, control cabinets, and other electrical assemblies and applications. Installation and operation of the SP1 is simple. The unit comes pre-wired with 24.00 inches of 10-gauge wire and is mounted via the half-inch nipple that is molded into its enclosure. Wall or DIN rail mounting can also be accomplished with the addition of an optional kit. When powered, the unit‘s light-emitting diode (LED) indicator reports the status of the protection elements and is active when all of them are intact and providing protection. Any loss of protection is signaled when the LED extinguishes.