Westhomes WCU8-40 SPD 40kA Surge Arrester | Lightning Protection
Westhomes WCU8-40 T2 SPD offers 40kA surge protection for industrial low-voltage systems, with 35mm DIN rail mounting and seamless module replacement.
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Westhomes WCU8-40 SPD 40kA Surge Arrester
Westhomes WCU8-40 T2 SPD offers 40kA surge protection for industrial low-voltage systems, with 35mm DIN rail mounting and seamless module replacement.
Westhomes WCU8-40 T2 SPD is an industrial surge arrester with 40kA surge protection capacity, designed for 35mm DIN rail mounting to shield low-voltage systems and PV setups from lightning and voltage surges.
Key Features：
High Current Protection: Delivers surge protection up to 40kA, with In 20kA rated discharge current for reliable equipment safeguarding.
Standard Mounting: Compatible with 35mm DIN rail (36mm installation dimension) for easy industrial panel integration.
Voltage Compatibility: Supports 275VAC/385VAC nominal voltage, meeting industrial low-voltage system requirements.
Classic Design: Orange-white color scheme with 34S MOV component for stable surge suppression performance.
Applications:
Industrial low-voltage power distribution systems
Photovoltaic (PV) system electrical panels
Manufacturing plant control cabinets
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 WCU8-40 SPD 40kA Surge Arrester?
The Westhomes WCU8-40 SPD 40kA Surge Arrester is a surge protection device designed to protect low-voltage electrical systems and equipment from transient overvoltages caused by lightning strikes, switching operations, and power disturbances. It helps discharge excessive surge energy safely and reduce the risk of electrical equipment damage.
What does 40kA mean on the WCU8-40 SPD?
40kA refers to the maximum discharge current capability of the surge arrester. It indicates that the WCU8-40 can safely handle surge currents up to 40kA under specified test conditions, providing effective protection against transient overvoltage events.
What type of SPD is the Westhomes WCU8-40?
The Westhomes WCU8-40 is a Type 2 Surge Protective Device (SPD) designed for secondary surge protection in low-voltage electrical installations. It is commonly installed in distribution boards and electrical panels to protect downstream equipment from induced lightning surges and switching overvoltages.
What applications are suitable for the WCU8-40 40kA Surge Arrester?
The WCU8-40 is suitable for residential, commercial, and industrial low-voltage applications, including distribution cabinets, control panels, power supply systems, and electrical equipment requiring protection against transient overvoltages.
What is the difference between an SPD and a circuit breaker?
An SPD protects electrical equipment from transient overvoltages caused by lightning and switching events, while a circuit breaker protects circuits from overcurrent conditions such as overloads and short circuits. Both devices provide different protection functions and are often used together in electrical systems.
Where should the WCU8-40 SPD be installed?
The WCU8-40 SPD is typically installed in distribution boards, secondary electrical panels, or near sensitive electrical equipment. The installation location depends on the system design, protection requirements, and applicable electrical standards.
Can the WCU8-40 protect household appliances and electrical equipment?
Yes. When correctly installed, the WCU8-40 can help protect household appliances, industrial equipment, and electronic devices from transient voltage surges caused by lightning effects and power switching operations.
What is the difference between Type 1 and Type 2 Surge Arresters?
Type 1 SPDs are designed to handle high-energy lightning impulse currents and are generally installed at the service entrance of buildings with external lightning protection systems. Type 2 SPDs, such as the WCU8-40, are mainly used to protect electrical installations from induced surges and switching overvoltages.
How does the WCU8-40 40kA Surge Arrester work?
The WCU8-40 works by limiting transient voltage spikes and providing a low-impedance path to safely divert surge currents to the grounding system. This helps keep the voltage within a safe range and protects connected electrical equipment.
Why choose the Westhomes WCU8-40 SPD 40kA Surge Arrester?
The Westhomes WCU8-40 combines reliable surge protection performance, 40kA discharge capacity, and compact installation for low-voltage electrical systems. It is an effective solution for improving electrical safety and protecting equipment against transient overvoltage risks.
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