LIGHTNING-SURGE PROT. type 1+2 (Citel, DS50PV-1500G/12KT1)
Valid Article
OC subscriptions: included in supply or field order tools (e.g. UniField)
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SC subscriptions: included in supply or field tools
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OC validations: approved for procurement and use by an OC for international or local orders specifying context and activity in Medical Standard Lists (MSL)
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LIGHTNING-SURGE PROT. type 1+2 (Citel, DS50PV-1500G/12KT1)
Form
This device provides combined lightning and surge protection for high-voltage photovoltaic strings, offering coordinated protection in both common and differential modes.
nominal system voltage (Uocstc): 1250 V DC
maximum continuous operating voltage (Ucpv): 1500 V DC
voltage protection level (Up): 5.3 kV (@ In, 8/20 µs, +/- and +/PE)
short-circuit withstand (Iscpv): 15 000 A
nominal discharge current (In): 15 kA (8/20 µs)
response time: not specified (MOV technology)
Spd type / class: type 1+2 (IEC 61643-31)
imax: 40 kA per pole (8/20 µs), 60 kA total
iimp: 6.25 kA per pole (10/350 µs), 12.5 kA total
number of poles: +/-/PE (3 terminals)
technology: MOV
dimensions: 90 × 54 × 67 mm
weight: 0.475 kg
Per piece.
Fit
installation location: Pv string combiner box / DC distribution enclosure
recommended back-up fuse / MCB: none required (internal thermal disconnector)
Dc system compatibility: PV +/-/Pe system (common and differential protection)
mounting type: 35 mm din rail
indoor use: Ip20 (inside enclosure)
max wire size: 2.5–25 mm² screw terminals
Function
This surge protection device safeguards photovoltaic installations from lightning currents and transient surges. It provides both common-mode and differential-mode protection for DC strings up to 1500 V. The internal thermal disconnector ensures safe end-of-life operation, while optional remote signaling allows monitoring of module status. Its MOV-based Type 1+2 design enables protection against both direct lightning effects and switching surges in PV systems.