What is the purpose of a surge protector?
In modern electrical systems, power surges, voltage spikes, and line noise pose hidden threats to electronic devices and electrical infrastructure. A Surge Protector (also known as SPD, Surge Protective Device) is a critical defense against these risks, acting as a safeguard for both residential and industrial equipment. Zhejiang C&J Electrical co., ltd. (referred to as C&J Electrical) offers a high-performance SPD solution that sets a new standard for surge protection reliability.
Core Purpose of a Surge Protector
A surge protector is designed to protect any device with a standard AC plug from potentially damaging and disruptive power surges, voltage spikes and line noise transferred through an electrical outlet. Think of a surge protector like an insurance policy. It monitors the incoming voltage and diverts excess electrical energy away from connected devices when a surge or spike occurs, preventing damage to sensitive components, data loss, or even fire hazards.
Unlike basic power strips (which only extend outlets without surge protection), a dedicated Surge Protector (SPD) is engineered to handle specific voltage anomalies, including:
- Power surges: Gradual voltage increases lasting milliseconds to minutes
- Voltage spikes: Sudden, brief voltage peaks (often caused by lightning or power grid switching)
- Line noise: Unwanted electrical interference that disrupts device performance
What is an SPD (Surge Protective Device)?
An SPD (Surge Protective Device) is a specialized type of surge protector designed for broader, more robust protection—typically used in industrial, commercial, and critical residential applications. It is classified into different types (T1, T2, T3) based on its installation location and surge current handling capacity, ensuring layered protection for electrical systems from the point of entry to end devices.
SPDs work by using components like Metal Oxide Varistors (MOV) and Gas Discharge Tubes (GDT) to absorb or divert surge energy. When the voltage exceeds a safe threshold, these components activate instantly, creating a low-resistance path for the excess current to ground, thereby protecting the main circuit and connected equipment.
C&J Electrical’s CJ-T1T2-AC SPD (Iimp: 12.5kA): Key Features & Advantages
C&J Electrical’s CJ-T1T2-AC series SPD is a high-performance surge protection solution designed to shield low-voltage equipment from lightning strikes and surge damage. Compliant with IEC61643-11 and GB/T 18802.11 standards, it is suitable for Class I+II (B+C class) PSD in various power supply systems and can be installed in LPZ0A-1 or higher protection zones. Its core features include:
Core Functional Features
- Dual waveform compatibility: 10/350μs and 8/20μs spark gaps (adapts to different surge types)
- Single-pole pluggable arrester: Easy maintenance and replacement without power interruption
- Sealed GDT technology: High follow-current extinguishing capability for reliable surge handling
- Ultra-low voltage protection level: Minimizes impact on normal device operation
- Dual terminals: Supports parallel or series (V-shaped) connection for flexible installation
- Multi-functional connection: Compatible with conductors and busbars
- Visual fault indication: Green window turns red when faulty; remote alarm terminal available for real-time monitoring
- High-performance MOV: Maximum rated current up to 12.5kA (10/350μs) for strong surge absorption
Technical Specifications
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Parameter
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Details
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|---|---|
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Model options
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T1T2 and T2 types
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Protection voltage level (Up)
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2.0kV
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Response time
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≤100ns (instantaneous surge diversion)
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Maximum backup fuse
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200A gL/gG
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Pole configurations
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1P, 2P, 3P, 4P (optional)
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Module replacement
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Removable modules for easy maintenance
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Installation
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35mm rail mounting (standard for electrical panels)
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Compliance & Certifications
- Meets IEC61643-11 international standard
- Certified with CE safety certification
- Rigorously tested for reliability in harsh environments
Versatile Application Scenarios
The CJ-T1T2-AC SPD is designed for widespread use across residential, commercial, and industrial settings, including:
- Industrial facilities: Factories, power plants, manufacturing workshops (protection for production equipment)
- Commercial buildings: Shopping malls, hotels, office buildings, data centers (safeguards HVAC, security, and IT systems)
- Residential buildings: High-rise apartments, villas (lightning and surge protection for home electrical systems)
- Critical infrastructure: Telecommunication stations, medical facilities, transportation hubs (protects mission-critical equipment)
Its flexible installation options, robust surge handling capacity, and reliable fault indication make it ideal for both new installations and retrofits.
Why Choose C&J Electrical’s CJ-T1T2-AC SPD?
In the Surge Protector (SPD) market, C&J Electrical’s CJ-T1T2-AC series stands out for its:
- Dual protection class: T1T2 type covers both external and internal surge protection needs
- High surge capacity: 12.5kA Iimp rating ensures protection against severe surges (e.g., lightning)
- User-friendly design: Pluggable modules, visual fault indication, and flexible connection options
- Global compliance: CE certification and adherence to international standards ensure quality and compatibility
- Durable performance: Sealed GDT technology and high-performance MOV for long-term reliability
Whether you need to protect industrial production equipment, commercial building systems, or residential electrical infrastructure, the CJ-T1T2-AC SPD delivers comprehensive, reliable surge protection.
Get in Touch
If you have any questions about product specifications, technical details, customization options, or bulk orders, please feel free to contact C&J Electrical. Our professional team is dedicated to providing tailored surge protection solutions to meet your specific needs.
Post time: Dec-19-2025