Select SL3 Series, Surge Protection
The Select-SL3 Series is a titan in surge protection—being the first hybrid device to combine robust selenium cells with the patented Integrated Suppression Module (ISM). This powerful combination delivers high-performance protection against temporary over-voltages and surges, thereby safeguarding sensitive electronic systems from voltage anomalies. Built with surge-rated copper busing and advanced filtering, the SL3 ensures exceptional reliability and dramatically extended service life. It offers flexible remote communication options such as Modbus or Ethernet, along with real-time data access directly via the unit’s display. Certified for both Type 1 and Type 2 applications, the SL3 is UL-listed and meets UL96A standards for lightning protection.
- Hybrid design combines selenium cells with ISM for powerful energy handling and durability
- Enhanced reliability, thus delivering consistent surge protection and longer lifespan
- Advanced filtering and surge-rated copper busing for superior suppression performance
- Remote communication capabilities including Modbus and Ethernet, with real-time data access via display
- Industry-certified safety, UL 1449 5th ed. listing for Type 1 & Type 2 SPDs, UL1283, and compliance with UL96A lightning protection standards
Description
Selenium Enhanced Select SL3 is the first hybrid device that combined selenium cells with the Current Technology patent Integrated Suppression Module (ISM). It features surge-rated copper busing, robust filtering, and superior remote communication capabilities. Selenium-enhanced Select SL3 surge protection devices offer advanced technology that delivers outstanding performance in all power quality surge events including temporary over-voltages.
- Hybrid design to deliver maximum performance and ensures a dramatically extended product life.
- Increased reliability – renowned for exceptional reliability, ensuring consistent performance and trustworthiness in every use.
- Easy access to real-time data via the display on the unit or remotely
Select SL3 Series from Current Technology
The Select-SL3 Series adheres to high industry standards, securing key certifications for reliability and performance. It is UL listed 1449 5th edition for Type 1 and Type 2 applications as well as certified under cUL and UL 1283. In addition, it meets the UL96A master label requirements for lightning protection systems. The Select-SL3 Series is suitable for various industries, including renewable energy, motion, food and beverage, and also for critical power facilities such as hospitals, financial institutions, airports, and data centers. It also serves educational institutions, wastewater treatment plants, transportation, and sectors involving oil, gas, and chemicals. These sectors demand equipment that operates efficiently under tough conditions, and the Select-SL3 Series meets these expectations, ensuring continuous operation and protection.
- First successful hybrid device utilizing selenium cells
- Surge-rated copper busing
- Robust filtering
- Advance remote communication capabilities, for example: Modbus or ethernet communication options
- Temporary Over Voltage + Transient Surge Protection
Industrial Surge Arrester
The Select-SL3 Series of surge protection devices is a high-performance hybrid SPD that combines classic selenium cells with the advanced Integrated Suppression Module (ISM), which integrates thermally fused MOVs, surge-rated copper busbars, and robust filtering for superior transient suppression and extended product life. It boasts fast response (<0.5 nanoseconds), low let-through voltage, and comprehensive protection modes (L-N, L-G, N-G, L-L). Designed for indoor or outdoor use, the SL3 meets stringent safety and reliability standards. This includes UL 1449 (5th Edition), UL 1283, and UL 96A, and it also complies with IEEE and NEC guidelines.
It supports versatile monitoring and MasterMind, ranging from LEDs and surge counters to advanced options like Modbus or Ethernet communication. Thus, it enables real-time data access locally or remotely. It features kA ratings from 50 kA to 300 kA, NEMA 4/12 enclosures, and is suitable for operation in harsh environments (-25 to 60˚C, 5–95% humidity). Therefore, the SL3 is ideal for safeguarding mission-critical infrastructure. Recommended applications include data centers, hospitals, commercial and industrial buildings, EV charging stations, renewable energy systems, chemical plants, as well as wastewater treatment facilities—where continuity and protection of sensitive equipment are essential.
- Select SL3 suppression filter systems feature selenium-enhanced surge protection along with a powerful failure-free ISMTM (Integrated Suppression Module).
- The ISM contains individual thermally fused and protected MOVs, surge-rated copper busing, robust filtering and advanced remote communications capabilities.
- Additionally, the SL3’s selenium-enhanced seamless technology design ensures maximum performance and a dramatically extended product life.










