3P AC DC Surge Arrester | Westhomes WCU1-40 40kA 385VAC
Westhomes WCU1-40 3P AC DC surge arrester delivers 40kA protection for 385VAC setups. Compact DIN rail design, IP20 rating & seamless module replacement.
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3P AC DC Surge Arrester
Westhomes WCU1-40 3P AC DC surge arrester delivers 40kA protection for 385VAC setups. Compact DIN rail design, IP20 rating & seamless module replacement.
Westhomes WCU1-40 3P AC DC SPD delivers 40kA surge protection for 275/385VAC systems! Features DIN rail mount, IP20 dust resistance, rust-proof terminals & seamless module replacement for household/industrial use.
Key Features：
3P Configuration: 3-pole design (matching the product’s electrical specification) for comprehensive protection of 3-phase AC DC circuits in household and industrial setups.
35mm DIN Rail Mounting: Standard DIN rail installation (matching product design in images) for quick, space-saving setup in electrical panels and enclosures.
IP20 Protection Rating: Dust and splash resistance ensures reliable operation in indoor electrical environments.
Rust-Proof Terminal Blocks: Corrosion-resistant terminals (visible in product images) ensure secure electrical connections and long-term durability.
Applications:
Industrial Control Panels
Photovoltaic Systems
Lightning Protection 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 | WCU1-40 |
| Brand Name | Westhomes |
| Type | T2 |
| Material | Plastic |
| Place of Origin | Zhejiang, China |
155 MBFREQUENTLY ASKED QUESTION (FAQ)
What is a 3P AC DC Surge Arrester?
A 3P AC DC Surge Arrester is a surge protection device designed to protect electrical equipment from transient overvoltages caused by lightning, switching operations, and electrical disturbances. The 3-pole configuration is suitable for protecting three-phase or multi-conductor electrical systems.
What does 3P mean on a Surge Arrester?
3P means the surge arrester has three protection poles. A 3-pole SPD is commonly used in three-phase electrical systems to provide surge protection between conductors according to the system grounding configuration.
Can a 3P Surge Arrester be used for both AC and DC systems?
A surge arrester designed for AC and DC applications can be used in different electrical systems depending on its rated voltage and specifications. The correct model should be selected according to whether the application is an AC power system or a DC power system.
What are the main functions of a Surge Arrester?
A Surge Arrester protects electrical equipment by limiting transient overvoltage and diverting excessive surge current safely to the ground. It helps reduce damage caused by lightning-induced surges, switching surges, and voltage spikes.
What applications are suitable for a 3P AC DC Surge Arrester?
A 3P AC DC Surge Arrester is suitable for low-voltage power distribution systems, industrial control panels, commercial buildings, renewable energy systems, and electrical equipment protection applications where surge protection is required.
What is the difference between a Surge Arrester and a circuit breaker?
A Surge Arrester protects electrical equipment from short-duration voltage spikes and transient overvoltages, while a circuit breaker protects circuits from overcurrent conditions such as overloads and short circuits. Both devices provide different types of protection and are often installed together.
Where should a 3P Surge Arrester be installed?
A 3P Surge Arrester is typically installed in distribution boards, electrical cabinets, control panels, or near sensitive equipment. The installation location depends on the protection level required and the electrical system design.
What is the difference between T1, T2, and T3 Surge Arresters?
T1 Surge Arresters are designed to handle high-energy lightning impulse currents at the service entrance. T2 Surge Arresters provide protection against induced lightning surges and switching overvoltages in distribution systems. T3 Surge Arresters are used for fine protection near sensitive electronic equipment.
How does a 3P AC DC Surge Arrester work?
A 3P AC DC Surge Arrester works by detecting sudden voltage increases and providing a low-impedance path to discharge excessive surge energy safely. This helps keep the voltage within a safe level for connected electrical equipment.
Why choose a Westhomes 3P AC DC Surge Arrester?
A Westhomes 3P AC DC Surge Arrester provides reliable transient overvoltage protection, compact installation, and compatibility with various low-voltage electrical systems. It is an effective solution for improving electrical safety and protecting valuable equipment from surge damage.
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