24 Volt Surge Protector – Plug-In Surge and Spike Protector for 24V Transformer Systems

24 Volt Surge Protector – Plug-In Surge and Spike Protector for 24V Transformer Systems Plug-in transient, surge, lightning, amp spike protection for 24V systems.. To use, plug the system's 24VAC transformer output leads onto the PRO24's line side wires (the side with the inline fuse). Plug the PRO24's load side wires where the transformer's leads used to go. Connect green wire terminal to a secure ground point. Insert proper fuse / place sticker nearby. Enjoy continuous protection. "The most common cause of HVAC circuit board failure is damage to the electronics module as a result of poorly conditioned voltage." This unit works with 24V systems ONLY. Package Weight: 2 oz. each Crystal-Clear Clamshell Package with Hanging Hole Full-Color Insert with Instructions Inside Standard Carton: 12 or 24 Pieces