Surge Protection Device Datasheets
Download datasheets for AC power SPD, DC solar PV SPD, Type 1 SPD, Type 2 SPD, Type 1+2 SPD, Signal line SPD, RS485 SPD, CCTV SPD and SCB.
Find Datasheets by Product Type
01 AC power surge protection devices
02 DC solar PV surge protection devices
03 Signal, RS485, data and CCTV surge protection
04 Type 1, Type 2 and Type 1+2 SPD series
Browse SPD Datasheets
Select a product category and download the corresponding technical datasheet. If you are not sure which datasheet is suitable, send us your system parameters.
Power Supply
AC Power SPD
For low-voltage AC distribution systems, main panels and sub-panels.
Type 1 / Type 2 / Type 1+2
Common Uc: AC385V/420V/440V
IEC 61643-11 Reference
New Energy Photovoltaic
Solar PV SPD
Effectively resist surge voltages, reducing equipment failures and downtime losses.
Type 2
AC & DC Power Protection
AC Power Protection
New Energy Wind Power
Wind Power SPD
If Uc is lower than the actual operating voltage, the SPD may age quickly or fail.
Type 1 / Type 2
Common Uc: AC760V/1500V
AC Power Protection
New Energy Charging Stations
EV Charging Station SPD
Resistant to outdoor high and low temperatures and water resistance.
AC Power Protection
Common Uc: AC385V
Poles/Configuration: 1P+N / 3P+N
Analog Signal Network
Signal & Data SPD
RS485, PoE and telecom lines can also be damaged by transient surges.
CSRS-485
CSMS-RJ45
CSMS-TEL12/24/48
SPD Backup Protector
Surge Circuit Breaker
Ensure that the surge protection remains effective and that the SPD does not catch fire.
Conjunction with SPD
Type 1 / Type 2 / Type 1+2
Common Ue: AC220V/380V
SPD Datasheet Quick Reference
Use this quick reference table to identify the right datasheet before downloading.
| Datasheet | Application | Voltage Reference | Standard | Best For |
|---|---|---|---|---|
| AC Type 1 SPD | Main Distribution Board, Power Entrance | AC 760V / 1500V | IEC 61643-11 | High-Risk Entrance Protection |
| AC Type 2 SPD | Sub-distribution Board, Equipment Cabinet | AC 385V / 420V / 440V | IEC 61643-11 | General Low-Voltage AC Protection |
| DC Solar PV SPD | PV Combiner Box, Inverter DC Side | DC 1000V / 1500V | IEC 61643-31 | Solar Photovoltaic Systems |
| Signal Line SPD | RS485, Data Line, Telecom, CCTV | 8V / 15V / 18V / 30V | IEC 61643-21 | Communication and Monitoring Systems |
How to Choose the Correct Datasheet
If you are not sure which datasheet to download, start from your system type and installation position.
1
Confirm System Type
AC Distribution, DC Solar PV, Signal Line, CCTV, Telecom or Industrial Automation.
2
Check Voltage
Confirm Uc, Un, Working Voltage, Signal voltage or Communication Interface.
3
Find Installation Point
Main panel, sub-panel, inverter side, combiner box, control cabinet or signal line.
4
Download or Request
Download the matching datasheet or send us your parameters for recommendation.
Not Sure Which SPD to Choose?
Send us your system parameters and installation position. We will help recommend suitable SPD product categories or models.
System Type: AC, DC PV, Signal line, CCTV or SCB
Operating Voltage: AC Voltage, DC Voltage or Signal Voltage
Installation Position: Main Panel, Sub-Panel, Inverter Side or Equipment Side
Grounding System and Wiring Method if Available
Quantity Requirement or Project Background
FAQ
What information is needed for automation SPD selection?
You need to provide power voltage, signal type, communication protocol, cable length, installation environment, grounding condition, and protected equipment type.
Where should SPD be installed in industrial control systems?
SPD should be installed at power input points, cabinet cable entry points, communication interfaces, sensor line entrances, and near sensitive control equipment.
What type of SPD is used for RS485 communication?
RS485 systems require signal SPD designed for low-voltage communication lines. The SPD should match the working voltage, number of wires, transmission speed, and communication structure.
Can surge protection protect PLC systems?
Yes. Properly selected SPD can help protect PLC power supplies, communication modules, I/O modules, and connected field devices from surge damage.
What parts of an automation system need SPD?
SPD may be needed for AC power supply lines, DC power circuits, PLC input/output lines, RS485 communication lines, sensor lines, Ethernet networks, and control cabinets.
Why do industrial automation systems need surge protection?
Industrial automation systems include PLCs, sensors, control cabinets, communication networks, and power supplies. These components are sensitive to transient overvoltage caused by switching operations, lightning-induced surges, and electrical interference.
Can CRESIN provide SPD for PoE security systems?
Yes. CRESIN can provide Ethernet and PoE surge protective devices for IP cameras, network switches, and security monitoring systems.
Where should CCTV SPD be installed?
SPD should be installed near outdoor cameras, at cable entry points, near network switches, and close to protected monitoring equipment when necessary. When choosing CCTV SPD, both power and signal lightning protection must be taken into consideration simultaneously.
Do analog CCTV systems need different SPD?
Yes. Analog CCTV systems may require video signal SPD, power SPD, or control line SPD depending on the wiring structure.
What type of SPD is used for IP cameras?
IP cameras usually require Ethernet SPD, especially when installed outdoors or connected through long network cables. If PoE is used, the SPD should support PoE transmission.
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