Leviton 3800-OEM 120 Volt AC, 2 Pole, 3 Wire, Equipment Cabinet SPD Surge Protective Device, Wired-In Module MOV-based suppression circuitry provides optimum clamping Provides Normal Mode protection for line-to-neutral and common mode; line-to-ground and neutral-to-ground Noise rejection @ 5kHz-5MHz: -35db Ten-Year Limited Product Warranty Noise Rejection: -35 dB at 5kHz-5MHz