IEC Electrical		600
Nominal DC Voltage	Uo/ Un	600V
Maximum Continuous Operating Voltage (DC)	Uc	600V
Nominal Discharge Current (8/20 μs)	In	20 kA
Maximum Discharge Current (8/20 μs)	Imax	40 kA
Impulse Discharge Current (10/350 μs)	Iimp	6.25kA
Voltage Protection Level	Up	2.2kV
Response Time	tA	< 25 ns
Back-Up Fuse (max)		125 A gL / gG
Short-Circuit Current Rating (AC)	lSCCR	25 kA / 50 kA
Mechanical & Environmental
Operating Temperature Range	Ta	-40ºF to +158ºF [-40ºC to +70ºC]
Permissible Operating Humidity	RH	5%...95%
Atmospheric pressure and altitude		80k Pa ... 106k Pa / -500 m.....2000 m
Terminal Screw Torque	Mmax	39.9 Ibf ·in [4.5 Nm]
Conductor Cross Section (max)		2 AWG (Solid, Stranded) / 4 AWG (Flexible)
		35 mm2  (Solid, Stranded) / 25 mm2(Flexible)
Mounting		35 mm DIN Rail, EN 60715
Degree of Protection		IP 20 (built-in)
Housing Material		Thermoplastic: Extinguishing Degree UL 94 V-0
Thermal Protection		Yes
Operating State / Fault Indication		Green ok / Red defect
Remote Contacts (RC)RC Switching CapacityRC Conductor Cross Section (max)		OptionalAC: 250V / 0.5 A; DC: 250V / 0.1 A;125V / 0.2 A;75V / 0.5 A16 AWG (Solid) / 1.5 mm2(Solid)

LY1-C40/3(S) PV series are Class C Surge Protection Devices, they designed to protect against lightning surge voltages in photovoltaic power supply networks. These units must be installed in parallel on the DC networks to be protected and provide common and differential modes protection. The LY1-C40/3(S) PV series are availa-ble for the main operating voltages in photovoltaic: 500, 600,800,900 and 1000 Vdc. The use of Class C Surge Protection Devices are recommended at both ends of the DC power supply line (solar panel side and inverter/converter side), especially if the line routing is external and long. The electrical diagramof the LY1-C40/3(S) PV series are based on high energy MOVs equipped with specific thermal disconnectors and related failure indicators. A remote signal feature is also available. The LY1-C40/3(S) PV series are made with plug-in modules to allow a fast and easy maintenance in case of failure (disconnection from the DC network). Discharge current In: 20kA / Imax: 40kA Plug-in modules Remote signal option IEC 61643-33 compliance• Complete unit consisting of upper part and base, pre-mounted and ready for connection • Suitable for TN and TT network systems • Plug-in upper part; upper part can be separated from base without tools • Incl. thermal and dynamic cut-off unit • With visual display of defects • High current conductivity and long service life • Labelled connections