1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of your KIMISS GSP9-C40PV Photovoltaic DC Surge Device. This device is designed to protect DC power line systems and associated equipment from power and transient overvoltages, ensuring the longevity and efficiency of your solar system.

Image 1.1: Examples of electrical systems susceptible to overvoltage, demonstrating the application of a surge protective device.
2. Safety Information
Please read all safety instructions carefully before installing or operating the device. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Qualified Personnel: Installation and maintenance should only be performed by qualified electricians or solar technicians familiar with DC electrical systems and surge protection devices.
- Disconnect Power: Always disconnect all power to the DC system before installing, inspecting, or servicing the surge protective device.
- Proper Grounding: Ensure the device is properly grounded according to local and national electrical codes.
- Environmental Protection: Install the device in a suitable enclosure that protects it from direct sunlight, moisture, dust, and extreme temperatures.
- Flame Retardant Material: The device housing is made of flame-retardant PC material. However, do not expose it to open flames or excessive heat.
3. Product Features
- Overvoltage Protection: Designed to protect DC power line systems and equipment against power and transient overvoltage, adhering to IEC EN 61643-11 low voltage standards.
- High Capacity: Features a maximum discharge current (Imax) of 40kA and a nominal discharge current (In) of 20kA.
- Voltage Rating: Suitable for 600VDC photovoltaic systems.
- Durable Construction: Features a flame-retardant PC material housing for enhanced safety and durability.
- Visual Status Indicator: Equipped with clear indicators (Green/Red) for easy monitoring of operational status.

Image 3.1: Front view of the GSP9-C40PV device, highlighting the status indicators.
4. Specifications
| Specification | Value |
|---|---|
| Model Number | GSP9-C40PV |
| Manufacturer | KIMISS |
| Part Number | KIMISSwqnt5hu49e |
| Material | PC (Flame Retardant) |
| Nominal Discharge Current (In) | 20 kA |
| Maximum Discharge Current (Imax) | 40 kA |
| Maximum Continuous Operating Voltage (Uc pv) | 600 VDC |
| Voltage Protection Level (Up) | 2.6 kV |
| Installation Method | Wall-Mounted |
| Item Weight | 215 g |
| Parcel Dimensions | 10 x 8 x 4 cm |

Image 4.1: Dimensional drawing of the GSP9-C40PV device.
5. Setup and Installation
Proper installation is crucial for the effective operation and safety of the surge protective device. It is highly recommended that installation be performed by a qualified professional.
5.1 Pre-Installation Checklist
- Ensure all power to the DC system is disconnected at the main breaker.
- Verify that the device specifications (voltage, current) match your solar system requirements.
- Gather necessary tools: screwdriver, wire strippers, multimeter, mounting hardware.
5.2 Mounting the Device
- Select a suitable location within your electrical enclosure, ensuring it is protected from environmental elements and easily accessible for inspection.
- The device is designed for wall-mounted installation. Secure it firmly using appropriate mounting hardware.

Image 5.1: Side profile of the device, illustrating its form factor for installation.
5.3 Wiring Connections
- Identify the positive (+) and negative (-) terminals on the surge protective device.
- Connect the DC positive power line from your solar array to the device's positive (+) input terminal.
- Connect the DC negative power line from your solar array to the device's negative (-) input terminal.
- Ensure all connections are tight and secure to prevent loose contacts and potential hazards.
- Connect the grounding terminal of the device to an appropriate earth ground, following all applicable electrical codes.

Image 5.2: Top view of the device, indicating positive and negative connection points.
5.4 Post-Installation Check
- Visually inspect all wiring to confirm correct polarity and secure connections.
- Ensure the device is properly mounted and grounded.
- Once all checks are complete, restore power to the DC system.
- Observe the status indicators on the device. They should be green, indicating normal operation.
6. Operating Instructions
The KIMISS GSP9-C40PV operates automatically to protect your solar system from voltage surges. Its operational status is indicated by visual indicators on the front of the device.
6.1 Status Indicators
- Green Indicator: A green light signifies that the surge protective module is functioning correctly and providing protection.
- Red Indicator: A red light indicates that the surge protective module has been activated due to an overvoltage event and is no longer providing protection. The module requires replacement.

Image 6.1: Angled view of the device, showing the green operational indicators.
7. Maintenance
Regular inspection and timely replacement of modules are essential to ensure continuous protection for your solar system.
7.1 Regular Inspection
- Periodically check the status indicators on the front of the device.
- If any indicator shows red, the corresponding protective module has been compromised and needs to be replaced immediately.
7.2 Module Replacement
- Disconnect Power: Before attempting to replace any module, ensure all power to the DC system is completely disconnected.
- Remove Faulty Module: Carefully pull out the faulty module from its slot.
- Insert New Module: Insert a new, identical replacement module into the empty slot, ensuring it clicks securely into place.
- Restore Power: Once the new module is installed, restore power to the DC system and verify that the indicator for the new module shows green.
Note: Only use genuine KIMISS replacement modules to ensure compatibility and continued protection.
8. Troubleshooting
This section addresses common issues you might encounter with your surge protective device.
8.1 Common Issues and Solutions
- No Indicator Light:
- Possible Cause: No power supply to the device or loose connections.
- Solution: Verify that power is supplied to the DC system and check all wiring connections for tightness. Ensure the device is correctly installed in the circuit.
- Red Indicator Light:
- Possible Cause: The surge protection module has failed due to an overvoltage event.
- Solution: Replace the faulty module immediately as described in Section 7.2 to restore protection.
- Frequent Red Indicator Lights (Multiple Modules Failing):
- Possible Cause: Persistent or severe overvoltage issues in your solar system, or the device is undersized for the system's surge environment.
- Solution: Consult a qualified electrician or solar technician to assess your system for underlying issues or to determine if a higher-capacity surge protective device is required.
9. Warranty and Support
9.1 Warranty Information
This KIMISS GSP9-C40PV Photovoltaic DC Surge Device comes with a standard manufacturer's warranty. Please refer to your purchase documentation or the retailer's terms and conditions for specific details regarding the warranty period and coverage.
9.2 Technical Support
For technical assistance, troubleshooting guidance beyond this manual, or to inquire about warranty claims, please contact KIMISS customer service through the retailer where the product was purchased. You may also visit the official KIMISS website for additional support resources.