When unexpected voltage spikes threaten your valuable equipment, reliable protection is non-negotiable. The YCS7N series DIN rail mounted surge protection device (SPD) from CNC Electric offers a compact, robust, and easy-to-install solution for low-voltage AC power systems. Designed to IEC 61643-1 standards, this protector is engineered to divert damaging surge currents—up to 80kA from lightning strikes—safely to ground, preserving the integrity of your electrical installations.
Ideal for installation in main distribution panels, these surge protection modules are your first line of defense in residential, commercial, and industrial settings, ensuring business continuity and preventing costly downtime.
With a space-saving 18mm width per module, the YCS7N snaps directly onto a standard 35mm DIN rail, streamlining integration into any existing cabinet. Its modular design allows for flexible configuration and a clean, organized panel layout.
The completely sealed housing structure ensures no arc leakage during operation, significantly enhancing safety for personnel and adjacent components. This design choice eliminates a common risk associated with lower-quality protectors.
Utilizing high-energy graphite varistor technology, the device responds to surges in less than 100 nanoseconds. With models offering nominal discharge currents (8/20μs) from 10kA up to 40kA and lightning impulse currents (10/350μs) up to 15kA, you can select the precise level of protection your system demands.
Equipped with an intuitive indicator window, the module provides instant visual confirmation of its operational status. A green light confirms it's active and protecting; a red alert signals the need for module replacement, simplifying maintenance.
This SPD is suitable for a wide range of power supply systems, including TN-S, TN-C, TN-C-S, TT, and IT networks with a rated voltage up to 230/400V AC, 50/60Hz. Available in 1P, 2P, 3P, and 4P ("3+1") configurations to match your specific wiring scheme.
| Model Example | Max Continuous Operating Voltage (Uc) | Protection Level (Up) | Nominal Discharge Current In (8/20μs) | Lightning Impulse Current Iimp (10/350μs) |
|---|---|---|---|---|
| YCS7N 1.0 | 385V / 420V | ≤ 1.5 kV | 10 kA | - |
| YCS7N 1.8 | 385V / 420V | ≤ 2.0 kV | 20 kA | - |
| YCS7N 2.0 (N-PE) | 255V / 280V | ≤ 1.5 kV | - | 12.5 kA / 15 kA |
*All models feature a response time of
Commercial & Residential Buildings: Main distribution boards to protect entire electrical systems.
Industrial Facilities: Safeguarding PLCs, motor drives, and sensitive production machinery.
Telecommunications & Data Centers: Protecting critical servers and network infrastructure.
Renewable Energy Systems: Inverter and control panel protection in solar PV installations.
Service & Retail: Ensuring point-of-sale systems, medical equipment, and security systems remain operational.
Global Reach, Local Expertise
With a support and distribution network active in over 200 countries, CNC Electric ensures you receive not just a product, but local technical support, readily available stock, and prompt service wherever your project is located.
Full Customization & OEM/ODM Flexibility
We understand standard solutions don't fit every need. Whether you require specific voltage thresholds, custom labeling for your brand, or unique form factors, our engineering team collaborates with you to develop tailored surge protection solutions.
Competitive Value Without Compromise
By leveraging advanced manufacturing and economies of scale, we deliver high-quality, certified surge protection devices that offer superior performance at a compelling price point, maximizing your return on investment.
Complete Product Portfolio
From Type 1 and Type 2 SPDs for AC systems to specialized DC models for solar applications, we offer a comprehensive range. This allows for cohesive system design and single-supplier accountability for all your surge protection needs.
Certified Quality & Reliability
Our YCS7N series is designed and tested in accordance with international standards like IEC 61643, providing assured performance and compliance for your projects.
DIN rail mounting refers to the method of attaching electrical devices like MCBs, contactors, or SPDs to a standardized 35mm wide metal rail inside an enclosure. It allows for neat, modular, and tool-free installation.
They are similar but not identical. The 35mm DIN rail (also called a "top hat" rail) has a symmetrical shape and is the global standard for low-voltage devices. G rails are less common and have a different profile; most modern components, including our YCS7N, are designed for the 35mm DIN rail.
Type 1 SPDs (like our N-PE models with 10/350μs rating) are installed at the building's main service entrance to protect against direct lightning strikes. Type 2 SPDs (like our standard 8/20μs models) are used at sub-distribution boards for protection against indirect surges and switching transients. A coordinated combination of both offers the most complete protection.
A Surge Protection Device (SPD) is a component that limits transient overvoltages by diverting surge current away from sensitive equipment. It acts like a pressure relief valve: under normal voltage, it is a high-impedance device; during a voltage spike, it becomes a low-impedance path to shunt the excess energy safely to ground.
Electrical codes vary by country and region. Many modern national codes (like the NEC in the US or the IET Wiring Regulations in the UK) now mandate the installation of surge protection in certain new construction, especially for dwellings and critical buildings. It is a best practice for any installation seeking to ensure safety and equipment longevity.
Yes, it is highly recommended and often required by standards. A dedicated miniature circuit breaker (MCB) or fuse should be installed in series with the SPD on the line side. This provides both overcurrent protection for the wiring and a safe, convenient means to disconnect the SPD for maintenance or replacement.
Don't wait for the next power surge to cause irreversible damage. Contact CNC Electric today to select the right DIN rail mounted surge protection device for your application, request a detailed datasheet, or discuss a custom OEM solution.
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