MKY23 , MKY44 , MKYS2 , MKYS4

IEC ClassⅡ compliant
IEC 61643-11 compliant
RoHS compliant

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Features

A single product provides line-to-line and ground-to-ground protection

Single-phase two-wire ~ three-phase three-wire correspondence（MKY23）

Single-phase two-wire ~ three-phase four-wire correspondence（MKY44，MKYS2, MKYS4）

Equipped with a deterioration display function (Alarm contact terminal: S type)

Easy to install in the switchboard

DIN rail (35mm) mounting,

Connecting plate mounting

Transparent cover with anti-shock switch

Applications

Low-voltage power supply circuit for switchboards and distributors (AC100V/200V/400V)

Appearance diagram, Circuit diagram

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Product model identification

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Installation examples (MKY23,MKYS2)

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Installation examples(MKY44,MKYS4)

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Item	Measurement conditions	Performance
		MKY23-05	MKY23-05S	MKY23-20	MKY23-20S	MKY44-20	MKY44-20S	MKYS2	MKYS2S	MKYS4	MKYS4S
Maximum continuous operating voltage(Uc)	─	Single phase 2wire AC130V 250V Single phase 3wire AC110V/220V Three phase 3wire AC250V		Single phase 2wire AC130V 250V Single phase3wire AC110V/220V Three phase 3wire AC250V		Three phase 3wire AC510V Three phase 4wire AC510V		Single phase 2wire AC130V250V Single phase 3wire AC110V 220V Three phase 3wire AC250V Three phase 4wire AC250V		Three phase 3wire AC510V Three phase 4wire AC510V
Maximum discharge current(lmax)	8/20µs	10kA（3times） (Between the lines , between the ground )		40kA (Between the lines, between the ground )				20kA（Between the lines, between the ground）
Nominal discharge current (ln)	8/20µs	5 kA（Between the lines, between the ground ）		20kA（Between the lines, between the ground）				10kA（Between the lines, between the ground）
Voltage protection level (Up)	Based on IEC	1.3kVor less （Between the lines） 1.5kVor less （between the ground）		1.5kVor less （Between the lines） 1.5kVor less （between the ground）		2.5kVor less （Between the lines） 2.5kVor less （between the ground）		1.3kVor less （Between the lines） 1.5kVor less （between the ground）		2.4kVor less （Between the lines） 2.4kVor less （between the ground）