LY-C40PV 3S Surge Protection Device

LY-C40PV 3S Surge Protection Device

Short Description:

Modular surge arrester for use in PV systems with floating remote signaling contact.
● Prewired complete unit consisting of a base part and plug-in protection modules
● High discharge capacity due to heavy duty zinc oxide varistors
● High reliability due to “temperature-controlled” SPD monitoring device

Product Detail

Product Tags

Technical data

SPD according to EN 61643-31 / IEC 61643-31

type 1+2 / class I+II

Max. continuous operating DC voltage (DC+)-PE,(DC-)-PE  ,(DC+)-(DC-)  Ucpv

1500 V DC

Nominal discharge current (8/20μs) In

20 kA

Maximum discharge current (8/20μs) Imax

40 kA

Maximum impulse current (8/20μs) Itotal

40 kA

Maximum impulse current (10/350μs) Iimp

6.25 kA

Maximum impulse current (10/350μs) Itotal

12.5 kA

continuous current for PV application ICPV

0.2 mA

Voltage protection level (DC+)-PE,(DC-)-PE  (DC+)-(DC-) Up 

5.0 kV

Response time tA

25 ns (L-N)

Short-Circuit Current Rating Iscpv

2000 A

Residual current a.c. and d.c.           IPE

0.3 mA(DC), 0.3 mA(AC),

Humidity range

5% ... 95%

Range of operating temperatures TU

-40°C ... +70°C

Atmospheric pressure and altitude

80k Pa ... 106k Pa, -500 m ... 2000 m

Operating state / fault indication

Green ok / Red defect

Number of ports

One port

Cross-sectional area (max.) 

2 AWG (Solid, Stranded) / 4 AWG (Flexible)

35 mm2 (Solid, Stranded) / 25 mm2 (Flexible)

For mounting on

35 mm DIN rail acc. to EN 60715

Enclosure material


Place of installation

indoor installation

Degree of protection

IP 20


4 module(s), DIN 43880



Type of remote signalling contact

changeover contact

a.c. switching capacity

250V / 0.5 A

d.c. switching capacity

250V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A

Cross-sectional area for remote signalling terminals

max. 1.5 mm2 solid / flexible

Remote signalling alarming mode

Normal: closed; failure: open-circuit



Protection fuction


PV earthing system

Earthed and Unearthed (both)

SPD failure mode (OCFM/SCFM)


Circuit diagram

LY-C40PV 3S (1)

Installation, Usage and Maintenance

This product can only be installed and maintained by qualified professionals. The installation position cannot be touched by hands. Ensure that it is unpowered and check whether the SPD is all right before installation. If there’s damage or the display window is red, the SPD cannot be used any more; if the window is green, the SPD is normal.
The installation of SPD should be based on Fig. 3 IEC 60364-5-53. The cross-sectional area of ground wire should not be less than 4 mm2, and the length of total lead not more than 0.5m.
The minimum distance from any earthed conductive surface at which the SPD can be installed is 8mm.
Connection of remote signalling alarm: the SPD is provided with remote signalling interfaces (NC, COM and NO, normally closed), applicable for remote centralized monitoring or alarm.
After the connection, check if the module is fitted in. If so, NC and COM are closed; if not, repress the module.

Wiring Diagram

LY-C40PV 3S (2)

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