Surge Protection Switchgear
-- Steady & Reliable Manufacturer --
Product Overview
Surge Protection Switchgear is the "Lightning Shield" of an electrical network, designed to protect sensitive equipment from transient overvoltages caused by lightning strikes or grid switching operations. At DSJ Electrical, our surge protection units utilize high-energy Metal Oxide Varistors (MOV) and specialized Surge Arresters that act within nanoseconds to divert excess energy to the ground. Available for both Medium Voltage (MV) and Low Voltage (LV) applications, these units are essential for protecting expensive transformers, motors, and digital control systems. We engineer our surge cubicles with specialized monitoring systems that track "Discharge Counts" and "Leakage Current," allowing facility managers to replace spent modules before a failure occurs. With a high-strength, grounded enclosure and optimized internal clearances, DSJ Surge Protection Switchgear provides the ultimate defense against the unpredictable energy of the elements.
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Low-Voltage Switchgear
CE Certified Main Distribution Board Construction Site Switchgear/Switchboard
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Medium-Voltage Switchgear
KYN28A-12 CE/UL Certified Metal Clad Switchgear Medium Voltage Switchgear/Switchboard
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Medium-Voltage Switchgear
KYN61-40.5 CE/UL Certified Metal Clad Switchgear Medium Voltage Switchgear/Switchboard
Electrical Partner
At DSJ, we transform complexity into reliability. With 42+ years of expertise in power distribution systems, our turnkey service integrates every phase – from regulatory compliance to final commissioning – ensuring seamless project execution for global clients. Whether it is the initial design or the final handover, we will strictly control every detail to ensure that the final delivered products perfectly meet your expectations. With us, you can focus on your core business with peace of mind, knowing that your project is in the hands of professional and reliable partners.
Introduction
The Surge Protection Switchgear line from DSJ Electrical Co., Ltd is built for "System Resilience." We recognize that a single transient spike can destroy millions of dollars in downstream electronics. Our introduction of this series focuses on "Response Speed" and "Energy Absorption Capacity." We utilize "Gapless" arresters with high non-linear characteristics, ensuring that they provide an open circuit during normal operation but a near-zero resistance path during a surge.
Innovation at DSJ involves "Digital Surge Analytics." Our surge panels can be equipped with IOT-enabled counters that send real-time alerts to your smartphone when a surge event is recorded. We prioritize "Thermal Stability," using oversized grounding copper and heat-resistant mounts to ensure the equipment survives the massive heat generated during a lightning discharge. At DSJ, we provide our surge protection in various "Classes" (Type 1 for main intakes, Type 2 for sub-panels), ensuring a coordinated protection strategy for your entire facility. Choosing our surge-protected gear means choosing a proactive defense strategy that minimizes downtime and hardware replacement costs. We provide the "Invisible Buffer" that keeps your grid safe from the storm.
Applications
- Exposed Substations: Protecting grids in lightning-prone regions.
- Data Centers: Safeguarding sensitive server power supplies.
- Industrial Plants: Protecting large VFDs and robotic controls.
- Telecommunication Sites: Ensuring zero-interruption for remote towers.
- Renewable Energy: Protecting solar inverters and wind turbine electronics.
- High-Rise Buildings: Protecting internal networks from external grid spikes.
Specifications
| Technical Feature | Surge Gear Detail |
|---|---|
| Voltage Range | 400V to 40.5kV |
| Protection Technology | MOV / GDT / Gapless ZnO |
| Nominal Discharge Current | 20kA to 100kA (8/20µs) |
| Response Time | < 25 Nanoseconds |
| Monitoring | Visual Indicator / Remote Contacts / IOT |
| Degree of Protection | IP31 to IP65 |
| Standard Compliance | IEC 61643 / IEC 60099-4 |
Why Choose Us
DSJ Electrical is a "Protective Engineering Specialist." We provide a coordinated surge strategy, not just hardware. Our "Smart Surge" panels offer the highest level of energy absorption in the industry, backed by a performance guarantee that gives you total confidence in your grid's resilience.
- Q: How do I know when a surge arrester is "spent"?
- A: Our units feature visual color indicators and remote alarm contacts that signal end-of-life.
- Q: Do I need surge protection if I have a lightning rod?
- A: Yes; a lightning rod protects the building structure, but surge protection protects the electrical wires.
Advantages
- Nanosecond Response: Stops transients before they reach sensitive gear.
- High Energy Handling: Built to withstand multiple direct surge events.
- Status Monitoring: Real-time visibility into arrester health.
- Modular Replacement: Easy to swap spent modules without de-energizing.
- System Coordination: Easily integrates into multi-level protection schemes.
- Weatherproof: Outdoor models available for remote grid protection.
Standards & Certifications
Our surge products are tested to IEC 60099-4 (MV) and IEC 61643-11 (LV). We hold CE, RoHS, and ISO 9001 certifications. Every unit undergoes a leakage current and reference voltage test to ensure perfect non-linear performance.
Payment & Shipping
Surge units are often compact and can be shipped via air express or as part of a larger panel lineup. We use ESD-safe packaging for sensitive electronic components. Lead times are 2-4 weeks.
DSJ Story
about DSJ
Building Power, Building Trust
Founded in 1983, DSJ is a leader in China's power distribution equipment. Headquartered in Beijing as the top-selling enterprise, we integrate manufacturing with trade and maintain full in-house capabilities in R&D, production, and sales. This enables efficient fulfillment of custom orders with industry-leading speed.
As a producer of distribution system, transformer, generator and photovoltaic products exceeding Chinese/international standards, DSJ supplies medium/low-voltage electrical equipment, and PV systems. For over four decades, we have delivered high-safety electrical solutions globally to public infrastructure, corporations, and households – achieving the industry's lowest return rate.
Committed to "meeting diverse needs through quality", DSJ leverages expert teams to provide one-stop services: pre-sales consultation & customization, flexible logistics/payment options, and reliable maintenance – ensuring seamless producer-maintainer-customer collaboration.
+86 18513032986 
FLC Center, Chaoyang District, Beijing, China