01
PV combiner boxes
Protect photovoltaic string-combining equipment against transient overvoltage.
VO-PV40 Series
VO-PV40 PV DC Surge Protective Device
Type 2 photovoltaic DC surge protection for combiner boxes, inverters and DC distribution cabinets.
500 / 600 / 800 / 1000 / 1200 / 1500 V DCMaximum continuous operating voltage (Ucp)
20 kANominal discharge current (In)
40 kAMaximum discharge current (Imax)
<25 nsResponse time
01 / PRODUCT VIEWVO-PV40 is a modular Type 2 PV DC surge protective device based on high-energy varistors. The range provides 500V to 1500V DC maximum continuous operating voltage references, a 20kA nominal discharge current, a 40kA maximum discharge current and a listed response time below 25ns.
02 / TECHNICAL DATA
VO-PV40 technical data
Use these values for initial selection. Confirm the PV array voltage, voltage protection level, protected mode, earthing arrangement, conductor size and controlled documentation before ordering.
Electrical, installation and environmental specifications
Maximum continuous operating voltage (Ucp)500 / 600 / 800 / 1000 / 1200 / 1500 V DC
Nominal discharge current (In)20 kA
Maximum discharge current (Imax)40 kA
Response time<25 ns
Voltage protection level (Up)2.8 / 3.2 / 3.5 / 3.8 / 4.5 / 5 kV
Protected modeDC+ to PE / DC- to PE
Protection gradeIP20
Internal componentHigh-energy varistor
Shell materialPBT / PA66
Failure indicationVisual status indicator
Ambient temperature-40°C to +80°C
Installation35mm standard DIN rail
Power-line conductor16–35 mm² multicore flexible cable
Zero-line conductor2.5–35 mm²
Minimum grounding conductor>6 mm² multi-strand copper wire
Maximum grounding lead length≤500 mm
Remote signal functionOptional
Supplied standards referenceGB 18802.1 / GB 50057 / IEC 61643-1
Product label standardIEC/EN 61643-11
VO-PV40 installation dimensions
Dimension drawing
Request the current dimension drawing for this model.
Configure VO-PV40
Select the system voltage first, then confirm the module arrangement and optional monitoring.
04 / APPLICATIONS
Applications for VO-PV40
02
PV inverter DC inputs
Provide coordinated DC-side surge protection ahead of photovoltaic inverter input circuits.
03
Solar DC distribution
Install on a 35mm DIN rail in DC distribution cabinets and photovoltaic control equipment.
05 / RESOURCES
VO-PV40 controlled documents
Request documents matched to the selected voltage, module arrangement and destination market.
Which VO-PV40 voltage references are available?
The supplied range lists 500V, 600V, 800V, 1000V, 1200V and 1500V DC maximum continuous operating voltage references.
What are the discharge current ratings?
The listed nominal discharge current is 20kA and the maximum discharge current is 40kA.
Where is VO-PV40 installed?
VO-PV40 mounts on a standard 35mm DIN rail in PV combiner boxes, inverter input equipment and DC distribution cabinets.
Is remote signaling available?
Yes. A remote signal function is listed as an optional configuration.
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