Low surge let-through reduces driver failure to minimise luminaire damage

Littelfuse have introduced a new series of LED lightning surge protection modules with greater transient overvoltage protection for outdoor and commercial LED lighting fixtures. The LSP10GIHP series surge protection device (SPD) module is the only series-connected SPD module on the market that combines low surge let-through (measured limiting voltage or MLV) and low clamping voltage ratings with a built-in LED indicator that alerts maintenance personnel to the need for replacement. This low MLV rating helps protect a luminaire’s LED driver against surge-induced failures and extends its operating lifetime. Constructed with the company’s thermally protected varistors, this series is available in a choice of operating voltages (277V or 480V). The 277V can be confidently used in 120V and 240V systems. The 480V can be confidently used in 347V systems and some 277V systems. A built-in thermal disconnect function protects against catastrophic failures and fire hazards, even under varistor end-of-life or sustained overvoltage conditions. “The LSP10GIHP Series offers the highest level of protection from transient surge voltage in the lighting market today,” said Todd Phillips, global marketing manager. “Its low surge let-through ensures the SPD module is compatible with the LED driver it’s intended to protect, giving luminaire designers the flexibility to choose the brand and wattage of driver they want without worrying about whether it will coordinate properly with the SPD module.” Applications include roadway lighting, parking garage lighting, wash wall lighting, traffic lighting, flood lighting, digital signage, tunnel lighting, and street lighting.