AC Power Surge Protective Device

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DIN Rail mount
Field replaceable phase modules
Finger-safe design – IP20 rating
Built-in visual status indicator Remote indicator with 3 pin COM/NO/NC contacts
Easy installation or retrofit
Fail-safe / self-protected design
Small footprint

Application

AC Network Connection Diagram (including some uncommon systems)

AC Power Surge Protective Device

Class I Switch-type 1. WTH-500/G Series (In: 200kA, Imax: 400kA, Iimp: 50kA) 2. WTH-300/G Series (In: 100kA, Imax: 200kA, Iimp: 25kA) Product List

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Class I Location of use: main sub-distribution boards Indication of three levels of surge protection With three MOVs' protection at the same time, the module can realize Class I surge protection; in case that two of the indicator windows indicates red, it can still meet Class II surge protection requirements. Product List

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Class I+II Location of use: main sub-distribution boards, branch sub-distribution boards Indication of two levels of surge protection The capability of displaying 50 percent of surge protection capacity: under normal circumstances, with two MOVs' protection at the same time, the module can realize Class I surge protection; in case that one of the indicator windows indicates red, there's still 50% of surge protection capacity to meet Class II surge protection requirements, and the module shall be replaced timely at this point. Product List

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Class I+II High Energy 1. WTH-65/B+C Series (In: 30kA, Imax: 65kA, Iimp: 7.5kA) 2. WTH-50/B+C Series (In: 25kA, Imax: 50kA, Iimp: 5kA) 3. WTH-65/G+/1P-255 Product List

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Class II 1. WTH-40/C Series (In: 20kA, Imax: 40kA) 2. WTH-65/G/1P-255 Product List

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Class II+III 1. WTH-20/D Series (In: 10kA, Imax: 20kA, Uoc: 20kV) 2. WTH-65/G/1P-255 Product List

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Class III 1. WTH-10 Series (In: 5kA, Imax: 10kA, Uoc: 15kV) 2. WTH-CS/AC Series (In: 5kA, Imax: 10kA, Uoc: 10kV) Product List

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