Westhomes WCU8-PV-40 DC SPD 600V | 40kA Solar Surge Guard
Westhomes WCU8-PV-40 single-phase DC SPD delivers 40kA surge protection at 600VDC for solar systems & household power distribution. DIN rail mount, 34S MOV, seamless module replacement.
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Westhomes WCU8-PV-40 DC SPD 600V
Westhomes WCU8-PV-40 single-phase DC SPD delivers 40kA surge protection at 600VDC for solar systems & household power distribution. DIN rail mount, 34S MOV, seamless module replacement.
Prioritize PV system safety with the Westhomes WCU8-PV-40 DC SPD. Delivering 40kA robust protection at 600VDC, this T2 device ensures stable operation for solar inverters and power distribution units.
Key Features：
PV-Specific DC Design: Optimized for direct current (DC) photovoltaic systems, supporting a maximum continuous operating voltage of 600V DC, specifically tailored to solar panel array requirements.
Dual Grade Protection: Boasts a nominal discharge current of 20kA (In) and a maximum discharge current of 40kA (Imax), effectively absorbing high-energy surges and lightning strikes.
Real-time Monitoring: Integrated Status Indicator allows quick visual inspection of the SPD’s operational health, ensuring the protection layer is active when needed.
Efficient MOV Technology: Utilizes high-quality 34S MOV (Metal Oxide Varistor) core for rapid voltage response, clamping the surge voltage down to a safe 3.0kV to protect sensitive electronics.
Applications:
Residential Solar PV Systems
Commercial Solar Farms
Solar Energy Storage Systems
Main Technical Parameters
| Model | Rated Voltage(Uo) | Maximum sustained voltageUc(V) | Protection levelUP(KV) | Maximum Current Imax(ka) | Nominal Discharge Current In(ka) | Response Time Ns | TEMP℃ |
| WCU8-D/10 | 230V/400V | 385 | 0.7/10 | 10 | 5 | <25 | -40~+80℃ |
| WCU8-D/20 | 1.5 | 20 | 10 | ||||
| WCU8-C/30 | 2.0 | 30 | 15 | ||||
| WCU8-C/40 | 2.0 | 40 | 20 | ||||
| WCU8-B/60 | 2.3 | 60 | 30 | ||||
| WCU8-B/80 | 3.3 | 80 | 40 | ||||
| WCU8-B/100 | 3.3 | 100 | 60 | ||||
| N-PE | 275/320 | 1.0/1.5 | 20/40/60 | <100 |
Packaging and delivery
| Selling Units | Single item |
Lead time
| Quantity (pieces) | 1 – 1,000 | > 1,000 |
| Lead time (days) | 30 | To be negotiated |
Key attributes
| Max Discharge Current | 40 kA |
| Application | Electronic Equipment, Industrial, Lightning Protection, Power System, Solar System |
| Model Number | WCU8-PV-40 |
| Brand Name | Westhomes |
| Type | T2 |
| Material | Plastic |
| Place of Origin | Zhejiang, China |
155 MBFREQUENTLY ASKED QUESTION (FAQ)
What is the Westhomes WCU8-PV-40 DC SPD 600V?
The Westhomes WCU8-PV-40 DC SPD 600V is a Type 2 surge protective device designed for photovoltaic (PV) and DC electrical systems. It protects solar panels, inverters, and other DC equipment from transient overvoltages caused by lightning strikes, switching operations, and electrical disturbances.
What does 600V DC mean on the WCU8-PV-40 SPD?
600V DC refers to the maximum continuous operating voltage rating of the surge protection device. The selected SPD voltage should match the maximum DC voltage
What does 40kA mean in a DC Solar SPD?
40kA refers to the maximum discharge current (Imax) capability of the SPD. It indicates that the device can safely discharge surge currents up to 40kA under specified test conditions.
Why do solar PV systems need a DC SPD?
Solar PV systems are exposed to outdoor environments and long cable connections, making them vulnerable to lightning-induced surges and transient overvoltages. A DC SPD helps protect sensitive components such as PV modules, combiner boxes, and inverters from surge damage.
Where should the WCU8-PV-40 DC SPD be installed?
The WCU8-PV-40 is typically installed on the DC side of solar PV systems, such as inside PV combiner boxes, near solar inverters, or in DC distribution cabinets. The installation position depends on the system design and protection requirements.
What is the difference between a DC SPD and an AC SPD?
A DC SPD is designed specifically for direct current systems such as solar PV and battery systems, while an AC SPD is used in alternating current power systems. DC SPDs have different voltage ratings and internal designs to safely handle continuous DC voltage.
Is the WCU8-PV-40 suitable for solar inverter protection?
Yes. The WCU8-PV-40 can be used to help protect solar inverters from transient overvoltages generated by lightning effects and switching events. Proper SPD selection and installation can improve the reliability of PV systems.
What is the difference between Type 1, Type 2, and Type 1+Type 2 DC SPD?
Type 1 DC SPD is designed to handle direct lightning current in systems requiring high-energy protection. Type 2 DC SPD protects against induced lightning surges and switching overvoltages. Type 1+Type 2 combines both functions for higher protection requirements.
Does the WCU8-PV-40 have a status indicator?
Yes. The WCU8-PV-40 features a visual status indicator that allows users to quickly check the operating condition of the SPD and identify whether replacement or maintenance is required.
Why choose the Westhomes WCU8-PV-40 DC SPD 600V?
The Westhomes WCU8-PV-40 provides reliable surge protection for solar and DC applications with 40kA discharge capability, DIN rail installation, and stable performance. It is an effective solution for protecting photovoltaic systems and improving long-term electrical safety.
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