Bad Wolf SP240V50KA Type 1 Whole House Surge Protector 120/240VAC Split Phase (3-Wire L1/L2/G), 50kA/Phase ITMOV, NEMA 4X Waterproof, LED Status, UL 1449 5th Edition, CSA C22.2 No. 269.1/269.2

Protect your service equipment and connected loads with the Bad Wolf SP240V50KA Type 1 whole house surge protector. Designed for 120/240VAC split-phase systems, it uses a straightforward 3-wire connection (L1, L2, Ground) and delivers 50kA per phase surge protection with advanced ITMOV technology. The compact NEMA 4X enclosure supports indoor/outdoor mounting, and the LED status indicator provides instant confirmation of protection (Green = OK / No Light = Replace). Built for compliance-focused installs: Intertek ETL Listed to UL 1449 (5th Edition), CSA C22.2 No. 269.1 & 269.2 compliant, and positioned for modern 2026 NEC surge protection requirements

• LAST LINE OF DEFENSE FOR YOUR PANEL & HOME – A Type 1 surge protective device (SPD) helps reduce damaging surges from lightning and utility switching before they reach sensitive loads—HVAC, appliances, electronics, and controls.
• NEC 2026 COMPLIANCE-READY SPD CATEGORY (TYPE 1) – NEC 230.67 requires a Type 1 or Type 2 SPD for services supplying dwelling units; 2026 updates expand surge protection requirements to additional applications/areas in the Code.
• SIMPLE 3-WIRE INSTALL: L1 / L2 / GROUND (NO NEUTRAL) – Built for 120/240VAC split-phase service with a straightforward three-wire hookup that keeps installs clean and contractor-friendly.
• 50kA PER PHASE + ADVANCED ITMOV – Robust 50kA/phase surge rating using ITMOV technology; engineered for real-world surge events (not just “marketing amps”).
• RUGGED NEMA 4X + EASY STATUS CHECK – NEMA 4X enclosure for indoor/outdoor installs and an LED status indicator (Green = OK / No Light = Replace) so homeowners and techs can verify protection at a glance.