DC Power SPD
The CSMS series DC power surge protective device (surge protectors) is designed in accordance with the IEC61643-11 and GB/T18802.11 lightning protection standards, and is suitable for DC power supply systems. It has passed the lightning protection Class II test of the national professional testing institution and is suitable for areas with high lightning risk (LPZ2 or the junction area of LPZ2 and LPZ3). It can be used for the secondary lightning protection of DC power supply systems. Through the coordination of the front and rear stage surge protectors in the lightning protection system, the lightning can be released step by step to achieve the purpose of protecting the distribution power supply and terminal electrical equipment.
Our DC Power SPD
Our products can effectively clamp the instantaneous high voltage of the circuit, ensuring that all subsequent precision electrical equipment and industrial control instruments are not damaged by surge currents.
PV DC SPD->DC Power SPD
Un(V) :
DC600V/1000V/1200V/1500V
Uc(V) :
DC670V/1200V/1500V/1800V
In (8/20 μs):
20kA
Imax(8/20 μs):
40kA
Reference Standards:
IEC 61643-31OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote Signaling
DC Power SPD
Un(V):
DC12/24/48/120/220/380/750/1000
Uc(V):
DC15/30/60/175/275/505/1060/1200
In (8/20 μs):
20kA
Imax(8/20 μs):
40kA
Mode of Protection:
L/N-PE; L-N, N-PEReference Standards:
IEC 61643-11OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote SignalingProduct Advantages
The premium core components feature excellent anti-aging performance and stable electrical properties under long-term and frequent surge impact, effectively extending the overall service life of the equipment and reducing frequent replacement costs for users.
High-Quality Components
Long Service Life
The premium core components feature excellent anti-aging performance and stable electrical properties under long-term and frequent surge impact, effectively extending the overall service life of the equipment and reducing frequent replacement costs for users.
Dual Overcurrent & Overheat Protection
with Fault Indication
When the equipment suffers from overcurrent overload, excessive temperature rise or component failure caused by abnormal surge impact, the intelligent tripping mechanism will automatically disconnect the circuit to avoid equipment burnout, fire hazards and other safety risks.
Superior Electrical Performance
Better Surge Protection
Featuring ultra-fast response time, it can instantly sense transient surge voltage and current, and suppress surge impact in the first place.
Pluggable Modular Design
Easy and Quick to Replace
The optimized modular design allows individual lightning protection modules to be removed and replaced separately without powering off the entire circuit or suspending system operation.
Product Design
The installation design principle of the entire machine is developed and produced strictly in accordance with international lightning protection standards.
Innovative Design and Advanced Safety Features
Smart & Connected Design
High-Quality Components
Thermal Protection Design
Modular & Pluggable Design
Visual Status Indication
Why Choose Us?
The lightning impact response speed is extremely fast, capable of conducting and discharging the surge current within milliseconds.
Professional SPD Manufacturer
We are a dedicated surge protective device factory with integrated R&D and manufacturing capabilities. Equipped with professional electrical R&D engineers, we focus on SPD production for power, PV, telecom and industrial fields. As a real manufacturer rather than a trader, we guarantee competitive factory-direct prices and stable supply capacity for bulk orders.
Strict Quality Control
Rigorous quality management runs through every production link. Raw material inspection, semi-product aging tests and 100% finished product surge impact testing are mandatory. Our in-house lightning test lab follows IEC 61643 standards, our items pass strict performance screening to ensure safe, durable and certified SPDs for global markets.
Customization Support
We offer full OEM & ODM customization solutions. We can adjust SPD specifications, structures, current parameters, logos and packages based on your project requirements. Our technical team develops tailor-made SPDs for special industry scenarios, supporting small trial orders and fast customized sample delivery.
SOLUTIONS
FAQ
Does DC SPD require grounding?
Yes. DC SPD must be connected to a reliable grounding system to safely discharge surge energy.
Is polarity important when installing DC SPD?
Yes. For many DC SPD products, polarity and wiring direction must be checked carefully during installation. Incorrect wiring may affect protection performance or damage the SPD.
How do I choose DC SPD voltage?
The SPD rated DC voltage should be selected according to the maximum operating voltage of the DC system. For solar PV systems, typical SPD voltage ratings include 600V DC, 1000V DC, 1200V DC, and 1500V DC.
Can AC SPD be used in DC systems?
No. AC SPD should not be used in DC systems unless it is specifically rated and certified for DC applications. Using the wrong SPD may cause safety risks and protection failure.
Where is DC SPD commonly used?
DC SPD is commonly used in solar PV combiner boxes, inverter DC input sides, battery energy storage systems, DC power panels, and low-voltage DC control systems.
How is DC SPD different from AC SPD?
DC SPD is designed for direct current systems where arc extinction is more difficult than in AC systems. Therefore, DC SPD must be selected according to DC voltage, polarity, system configuration, and application conditions.
What is a DC surge protective device?
A DC surge protective device is designed to protect direct current systems from transient overvoltage. It is commonly used in solar PV systems, battery systems, DC control circuits, and other DC power applications.
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Address: No. 978 Tianchen Road, High-tech Zone, Jinan, Shandong,China
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The product range includes production technologies for smart capacitors, digital display meters, surge protectors, dedicated backup protection devices for surge protectors, self-resetting over/under-voltage protectors, control and protection switches, and automatic transfer switches for dual power supplies.
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