Product Description
The BEIYI BEY-40/DC 3 Pole DC Surge Protective Device (SPD) is a high-performance protection device designed for solar photovoltaic (PV) systems and DC electrical installations. It is used to protect sensitive electrical equipment such as solar panels, inverters, charge controllers, and DC distribution systems from damage caused by lightning surges, transient overvoltage, and switching spikes.
This device is engineered as a Type 2 DC SPD, providing reliable secondary protection in solar and DC power networks. It ensures stable system operation by safely diverting surge energy to the ground, preventing equipment failure and electrical hazards.
With a 3-pole configuration, the BEY-40/DC is suitable for advanced solar PV arrays and DC systems where higher protection coverage is required. Its compact DIN rail design allows easy installation inside solar combiner boxes, inverter panels, and DC distribution boards.
Key Features
- Type 2 DC Surge Protective Device (SPD)
- 3 Pole configuration for full DC protection
- Designed for solar PV and DC power systems
- High discharge capacity for lightning surge protection
- Fast response to transient overvoltage
- Flame-retardant and heat-resistant housing
- Visual status indication (operational/fault)
- DIN rail mounting for easy installation
- Suitable for inverter and solar combiner boxes
- Protects against surge, lightning, and switching spikes
- Ideal for residential and industrial solar systems
Technical Specifications
| Specification | Details |
|---|---|
| Brand | BEIYI |
| Model | BEY-40/DC |
| Product Type | DC Surge Protective Device (SPD) |
| SPD Type | Type 2 |
| Poles | 3 Pole |
| Rated Voltage (Uc) | Up to 1000V DC (model dependent) |
| Max Discharge Current (Imax) | 40kA |
| Nominal Discharge Current (In) | 20kA |
| Voltage Protection Level (Up) | ≤ 4.0kV |
| Response Time | ≤ 25ns |
| Mounting Type | DIN Rail (35mm) |
| Standard | IEC/EN 61643-31 |
| Application | Solar PV & DC Systems |
Applications
- Solar photovoltaic (PV) systems
- Battery energy storage systems
- Solar combiner boxes
- DC distribution panels
- Off-grid solar systems
- Industrial DC electrical systems
- Inverter protection systems
- Renewable energy installations
Product Advantages
- Protects solar systems from lightning-induced surges
- Enhances overall electrical safety and stability
- Reduces risk of equipment damage and downtime
- Improves system lifespan and reliability
- Fast surge response for critical protection
- Compact design saves installation space
- Suitable for both residential and commercial solar systems
- Easy installation and maintenance
Important Note
This is a DC-only surge protection device and must not be used in AC systems.
Voltage rating and configuration may vary depending on installation design and system requirements.
Proper grounding is essential for effective surge protection.
Installation should be performed by a qualified electrician.
Why Choose BEIYI BEY-40/DC 3 Pole SPD?
The BEIYI BEY-40/DC 3 Pole SPD is designed for modern solar and DC power systems that require strong and reliable surge protection. With its high discharge capacity, fast response time, and durable construction, it ensures maximum protection for valuable electrical equipment and enhances the safety and stability of renewable energy systems.
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