Built to Protect. Trusted to Last. LEEYEE AC surge protective devices help protect distribution panels, building power systems, and industrial electrical equipment from transient overvoltage.
AC Surge Protective Device Selection Guide
AC Surge Protective Device Selection Guide
Built to Protect. Trusted to Last. Choose AC SPDs for residential distribution boards, commercial buildings, industrial panels, and OEM electrical cabinets by system type, SPD type, pole configuration, and protection level.
Product Series
AC SPD Product Series
Explore AC surge protective device series for Type 1, Type 1+2, Type 2, single-phase, three-phase, and OEM distribution systems.
Type 1 AC SPD Series
For incoming power distribution, lightning exposure areas, main distribution boards, and high-risk AC systems.
View Type 1 AC SPD →
Type 1+2 AC SPD Series
For combined lightning current and surge protection in commercial buildings, distribution panels, and OEM cabinets.
View Type 1+2 AC SPD →
Type 2 AC SPD Series
For distribution boards, AC panels, residential systems, commercial equipment, and general surge protection.
View Type 2 AC SPD →Seleção Rápida
Start From Your AC Application
Choose the AC SPD path based on where the surge protective device will be installed.
Residential Distribution Boards
For single-phase AC panels, home distribution boxes, small buildings, and terminal protection.
View Residential AC SPD →Commercial & Industrial Panels
For main distribution boards, sub-distribution panels, factories, workshops, and equipment rooms.
View Panel Protection →OEM Electrical Cabinets
For cabinet builders, switchgear manufacturers, wholesalers, and private-label SPD projects.
View OEM SPD Support →Choose By AC System
Select AC SPD By Power System
Match the AC surge protective device to the voltage system, phase type, and wiring method.
Single-Phase AC SPD
For 1P, 1P+N, 2P AC power systems and residential distribution boards.
Three-Phase AC SPD
For 3P, 3P+N, 4P AC systems, industrial panels, and commercial distribution.
230V / 275V AC SPD
For common single-phase AC networks and low-voltage distribution protection.
385V / 440V AC SPD
For three-phase AC systems, distribution panels, and higher operating voltage networks.
Choose By Installation Position
Select AC SPD By Installation Position
Choose the AC surge protective device based on where it will be installed in the power distribution system.
Quadro de distribuição principal
For building incoming power lines, main switchboards, and high-exposure locations requiring stronger lightning current discharge capability.
View Main Panel SPD →Sub-Distribution Board
For floor distribution panels, secondary AC boards, commercial electrical rooms, workshops, and coordinated surge protection.
View Distribution Panel SPD →Terminal Equipment Panel
For terminal equipment protection, control cabinets, machines, sensitive electrical loads, and general induced surge protection.
View Terminal Protection SPD →Selection Notes
What To Confirm Before Choosing An AC SPD
Send these parameters if you need help matching the right AC surge protection device.
- AC system: single-phase, three-phase, TT, TN-S, TN-C, or TN-C-S distribution system.
- Nominal voltage: 230V, 275V, 385V, 440V, or customized AC system voltage.
- SPD type: Type 1, Type 1+2, or Type 2 based on installation position and lightning exposure.
- Electrical parameters: Uc, In, Imax, Iimp, Up, pole configuration, backup fuse, and cabinet layout.