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For critical HVAC application needs, leading brands rely on Littelfuse with nearly 100 years of experience. From overload to overcurrent, and accuracy to durability, we have your equipment needs covered with protection, control and sensing components to enhance your overall HVAC system performance.
Photovoltaic (PV) systems require surge protection due to the inherent risk of damage from direct or indirect lightning. To understand the different types of surge protective devices (SPDs) available and to help select the right device for your specific PV application, watch this video.
Surge protective devices (SPDs) need to be sized correctly. If they are sized too low, the system could be susceptible to temporary overvoltages. If they are sized too high, it could be damaging to equipment.
This convenient SPD calculator by Littelfuse will determine an optimal MCOV size for your specific system.
Whole-home surge protection has become a much bigger issue for
residential electrical contractors in the last year as local authorities
have begun adopting the 2020 edition of the National Electrical Code
(NEC).
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