TRS3-C40

Type 2 PV Surge Protective Device TRS3-C40

Main Features

Nominal discharge current (8/20μs) In: 20kA
Maximum discharge current (8/20μs) Imax: 40kA
Network Systems: (+)-PE, (-)-PE, (+)-(-)
IEC/EN Category: Type 2 / Class II
Protective Elements: High Energy MOV
Housing: Pluggable design
Application: String box, Inverter
Compliance: EN 61643-31:2012, IEC 61643-31:2011

The TRS3-C40 is a dedicated Type 2 DC surge protective device engineered specifically for photovoltaic (PV) power systems.
Designed to protect DC strings and inverters from switching surges and indirect lightning effects, it delivers stable performance across a wide voltage range from 500 VDC up to 1500 VDC.
Its compact pluggable-module structure ensures easy replacement and reliable operation within modern solar installations.

Equipped with high-quality MOV-based protection components, the TRS3-C40 offers 20 kA nominal discharge current (8/20 μs) and 40 kA maximum discharge capability, providing strong defense against transient surges commonly seen in PV arrays.
With a low protection level—starting from ≤2.0 kV depending on voltage class—it helps maintain system integrity and extends inverter lifetime by keeping overvoltages well under control.

A red visual fault indicator provides instant status feedback, while optional potential-free remote signaling contacts allow integration with monitoring systems for real-time fault reporting.
Its IP20 enclosure and DIN-rail mounting design enable fast, secure installation inside combiner boxes, inverter cabinets, and DC distribution enclosures.

Engineered for demanding outdoor renewable-energy environments, the TRS3-C40 performs reliably across a wide temperature and humidity range, ensuring long-term stability in both small residential setups and utility-scale solar farms.

Applications

DC string protection for residential, commercial, and utility-scale PV systems
Solar combiner boxes, DC distribution panels, and inverter-side surge protection
PV installations with or without external lightning protection systems (LPS)
High-voltage PV arrays up to 1500 VDC, including modern large-scale deployments
Systems requiring visual fault indication and optional remote alarm integration
Environments where quick, tool-free module replacement improves maintenance efficiency

Parameter/Type	TRS3-C40
Parameter/Type	PV connection type	U
Nominal PV Voltage Uocstc	500V DC	600V DC
Max. PV Operating Voltage Ucpv	600V DC	720V DC
Nominal discharge current (8/20μs) In	20kA
Maximum discharge current (8/20μs) Imax	40kA
Voltage protection level mode +/PE, -/PE Up	≤2,0kV	≤2,3kV
Short-circuit current rating Iscpv	100A
Response time ta	<25ns
Cross-section of connected conductors solid(min/max)	16mm²/35mm²
Cross-section of connected conductors stranded(min/max)	16mm²/35mm²
Fault indication	red indication field
Remote indication	potential-free change-over contact
Remote indication contacts	250V/0,5A AC, 250V/0,1A DC
Cross-section of remote indication conductors	1,5mm²
Degree of protection	IP20
Range of operating temperatures (min/max)	-40°C~+70°C
Humidity range	5%~95%
Mounting	DIN rail 35 mm
According to standard	EN 61643-31:2012, IEC 61643-31:2011/T2
Remarks	Other UCPV can be customized.

Rotate the 3D model to inspect the surge protective device from different angles. For detailed technical specifications, electrical ratings and installation information, please refer to the other tabs.