ZY2-40DC 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. Our products 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 diagram of the ZY2-40DC series are based on high energy MOVs equipped with specific thermal disconnectors and related failure indicators. A remote signal feature is also available. And they are made with plug-in modules to allow a fast and easy maintenance in case of fa-ilure (disconnection from the DC network).Surge current suppression: DC surge protector can effectively suppress the impact of external surge current on equipment, and protect equipment from overvoltage and overcurrent damage. Fast response time: The DC surge protector has a fast response time, which can react quickly before the surge current reaches the equipment to protect the equipment from damage. Multi-level protection: DC surge protectors usually adopt a multi-level protection design, which can filter and suppress surge currents of different levels to improve the protection effect. High withstand voltage capability: The DC surge protector has a high withstand voltage capability and can withstand high voltage peaks to ensure the normal operation of the equipment under sudden voltage changes or surge current impacts. Reusable: DC surge protectors can generally be used multiple times, and when they are impacted by surge currents, they can automatically return to normal working conditions without manual intervention. Easy installation: DC surge protectors generally adopt a plug-in design, which is easy to install. At the same time, you can also choose a suitable installation method according to actual needs, such as socket type, wall-mounted type, etc. Economical and practical: The price of DC surge protector is relatively low, and its performance is stable and reliable. It is an economical and practical choice to protect equipment from surge current damage.1. who are we? We are based in Zhejiang, China, start from 2012,sell to Mid East(30.00%),Africa(25.00%),Eastern Asia(10.00%),South Asia(10.00%),South America(10.00%),Eastern Europe(10.00%),North America(5.00%). There are total about 51-100 people in our office. 2. how can we guarantee quality? Always a pre-production sample before mass production; Always final Inspection before shipment; 3.what can you buy from us? AC & DC Surge Protective Device,Voltage & Current Protector,AC& MCCB,Solar connector,DC Fuse Holder 4. why should you buy from us not from other suppliers? Zhejiang Minyang new energy(Zhejiang) Co.,Ltd build in 2012 ,We have more than 10 year experience development and production of Solar Power system accessories ,such as DC SPD,DC MCB,DC MCCB,DC FUSE,PV combiner box,and so on. 5. what services can we provide? Accepted Delivery Terms: FOB,CFR,CIF,EXW; Accepted Payment Currency:USD,EUR,CNY; Accepted Payment Type: T/T,L/C,D/P D/A,MoneyGram,Credit Card,PayPal,Western Union,Cash;