Kumwell KZ12.*.pv.ds is surge arrester class II according to IEC 61643-11 Complete device consists of a base part and pluggable modules. These arresters are recommended for use in the Lightning Protection Zones Con-cept at the boundaries of LPZ 1-2 (according to IEC 62305) for equipotential bonding of positive and negative busbars of photovoltaic systems and elimi-nation of transient overvoltage that originate during atmospheric discharges or switching processes.

Photovoltaic System
Technical Data		KZ12.U0600.pv.ds	KZ12.U0800.pv.ds	KZ12.U1000.pv.ds	KZ12.U1500.pv.ds
Max. continuous operating voltage	Ucpv	600 V DC	870 V DC	1050 V DC	1500 V DC
Open circuit voltage of PV generator	UOCSTC	500 V	730 V	875 V	1250 V
Short circuit withstand	USCWPV		100 A
Max. discharge current (8/20µs)	Imax		40 kA
Norminal discharge current (8/20µs)	In	20 kA	15 kA	15 kA	16 kA
Voltage protection level at In	UP	<  2.6 kV	<  3.3 kV	<  3.8 kV	<  4.5 kV
Response time	tA		< 25 ns
LPZ			1-2
Protection type			IP20
Operating temperrature range			-40°C to + 80°C
Mounting on			Din rail 35mm
Application			L+/L-, L+/PE, L-/PE
Failure indication			green (ok) / red (failure)