S2SRP is a product line from Littelfuse, Inc., an international manufacturer of circuit protection and power distribution products. S2SRP stands for Secondary Shutoff Recloser Protection and is a system of relays and components that control the flow of high voltage electrical current to protect equipment and personnel. The system operates with fuses, contactors, and valves to monitor and control the current. It is designed to be installed in utilities, factories, and industrial sites to protect against high overloads. S2SRP helps reduce downtime, save energy, and improve safety for personnel and equipment.