40kA Lightning Arrester | WCU8-40 4P AC DC
Westhomes WCU8-40 4P AC DC SPD delivers 40kA surge protection for industrial, electronic & solar setups. 385VAC/275VAC range, compact DIN rail design & high durability.
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40kA Lightning Arrester
Westhomes WCU8-40 4P AC DC SPD delivers 40kA surge protection for industrial, electronic & solar setups. 385VAC/275VAC range, compact DIN rail design & high durability.
Guard your industrial/solar gear with Westhomes WCU8-40! 40kA high-current protection, 4P configuration, and compact DIN rail installation for versatile AC DC applications.
Key Features：
40kA Surge Protection: Delivers up to 40kA maximum discharge current to shield electrical equipment from lightning and voltage spike damage.
4P Configuration: 4-pole design for comprehensive circuit protection, ideal for multi-line industrial and solar system setups.
High Durability: Engineered with high breaking capacities for reliable long-term performance in harsh industrial and outdoor solar environments.
T2 Lightning Protection: Complies with Type 2 surge protection standards, providing professional-grade defense against indirect lightning strikes.
Applications:
Solar PV Installations
Electronic Equipment Racks
Commercial Building Electrical Networks
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 | WCU8-40 |
| Brand Name | Westhomes |
| Type | T2 |
| Material | Plastic |
| Place of Origin | Zhejiang, China |
155 MBFREQUENTLY ASKED QUESTION (FAQ)
What is a 40kA Lightning Arrester?
A 40kA Lightning Arrester is a surge protection device designed to protect electrical systems and equipment from high transient overvoltages caused by lightning strikes and electrical surges. It helps discharge excessive surge current safely to the ground and reduces the risk of equipment damage.
What does 40kA mean in a Lightning Arrester?
40kA refers to the maximum discharge current capacity of the lightning arrester. It indicates that the device can handle surge currents up to 40kA under specified test conditions, providing effective protection against lightning-induced surges.
What is the difference between a Lightning Arrester and an SPD?
A Lightning Arrester and an SPD (Surge Protective Device) both provide protection against overvoltage events. Lightning arresters are mainly associated with protecting electrical systems from high-energy lightning surges, while SPDs are commonly used for broader transient overvoltage protection caused by lightning and switching operations.
What applications are suitable for a 40kA Lightning Arrester?
A 40kA Lightning Arrester is suitable for residential, commercial, and industrial low-voltage electrical systems, including distribution panels, power supply systems, control cabinets, and electrical installations requiring reliable surge protection.
How does a 40kA Lightning Arrester work?
A 40kA Lightning Arrester works by providing a low-impedance path for surge current when a lightning or overvoltage event occurs. It quickly diverts excessive energy to the grounding system, helping limit the voltage level applied to connected equipment.
Where should a 40kA Lightning Arrester be installed?
A 40kA Lightning Arrester is typically installed at the incoming power distribution point, main electrical panel, or other locations where surge protection is required. The installation position depends on the protection level and system design.
Can a 40kA Lightning Arrester protect household electrical equipment?
Yes. When properly selected and installed, a 40kA Lightning Arrester can help protect household appliances and electrical equipment from transient overvoltages caused by lightning effects and power system disturbances.
What is the difference between Type 1 and Type 2 Lightning Arresters?
Type 1 lightning arresters are designed to handle high-energy lightning impulse currents and are typically used at the service entrance of buildings with external lightning protection systems. Type 2 devices are mainly used in distribution boards to protect against induced lightning surges and switching overvoltages.
Does a Lightning Arrester replace a circuit breaker?
No. A Lightning Arrester and a circuit breaker provide different protection functions. A lightning arrester protects against transient overvoltages, while a circuit breaker protects against overloads and short circuits. Both devices may be required in a complete electrical protection system.
Why choose a Westhomes 40kA Lightning Arrester?
A Westhomes 40kA Lightning Arrester provides reliable surge protection, strong discharge capability, and stable performance for low-voltage electrical systems. It is designed to help protect valuable electrical equipment from lightning-related surge damage and improve overall system safety.
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