Kumwell KZ12.DC series surge arrester type 2 for DC power systems. These arresters are recommended for use in the Lightning Protection Zones Concept at The boundaries of LPZ 1-2 (according to IEC 62305) for equip-otential bonding and elimimination of transient overvoltage that originate during atmospheric discharges or switching processes.

The main use of KZ12.DC series is in all kinds of industry, residential and administration buildings. They are to be placed into the secondary switchboards or into the control box.

MOV Surge Protection for DC Power
Technical Data		KZ12.DC024-U038.ds	KZ12.DC048-U065.ds	KZ12.DC125-U170.ds
Nominal operating voltage	UN	24 V DC	48 V DC	125 V DC
Max. continuous operating voltage	UC	38 V DC	65 V DC	170 V DC
Max. discharge current (8/20µs)	Imax	20 kA	30 kA	40 kA
Nominal discharge current (8/20µs)	In	10 kA	15 kA	20 kA
Voltage protection level at In	UP	< 300 kV	< 400 kV	< 800 kV
Response time	tA		< 25 ns
Max. back-up fuse			125 A gL/gG
Short-circuit withstand capability	Ip		60 kArms
LPZ			1-2
Protection type			IP20
Operating temperature range			-40°C to + 80°C
Mounting on			Din rail 35 mm
Failure indication			green (ok) / red (failure)