WTSP-A40 AC Surge Protective Device SPD
WTSP-A40 AC Surge Protective Device SPD. Protection for electrical systems.
ac spd
AC surge protective devices that safeguard inverters and AC distribution against transient overvoltages.
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An AC SPD protects electrical distribution systems, inverters, and connected equipment from voltage surges caused by lightning strikes, grid switching, and other transient events.
We offer the WTSP-A40 series, Type 2 AC surge protector rated for 275V/385V AC systems with 40kA maximum discharge current, suitable for single-phase and three-phase applications.
Install at the main distribution panel, inverter AC output, and sub-distribution boards. For three-phase systems, use one SPD per phase plus neutral-to-ground protection.
When the MOV element degrades beyond safe limits, the built-in thermal disconnect physically separates the SPD from the circuit, preventing fire hazards while providing visual end-of-life indication.
The WTSP-A40 responds to surge events within nanoseconds (<25ns), ensuring that downstream equipment is protected before surge energy can cause damage.
They comply with IEC 61643-11 and EN 61643-11, carrying CE certification for use in AC power distribution systems worldwide.
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