LSP’s Type 2 SPDs are trusted by over 1,200 companies, including many renowned appliance brands and wholesalers. Manufactured with premium materials and advanced technology, our AC SPDs ensure stable and reliable quality, helping businesses reduce long-term costs. We offer comprehensive surge protection solutions and long-term service support, dedicated to providing our customers with the highest level of protection.
The DIN-Rail AC Type 2 SPD SLP40 series is suitable for single- and three-phase systems. It supports nominal operating voltages (50/60 Hz) of Un = 60 V, 120V, 230 V, 400 V AC, and maximum continuous operating voltages of Uc = 75V, 150 V, 275 V, 320 V, 385 V, 440 V AC, providing reliable surge protection for low-voltage installations.
Our Type 2 surge protection devices (SPDs) are certified by TUV, CB, and CE, and tested according to IEC/EN 61643-11 standards, ensuring high-quality, reliable surge protection.
With in-depth knowledge of international standards and regulations, LSP manufactures millions of Type 2 surge protection devices (SPDs) each year.
These Type 2 SPDs are designed for installation at the service entrance of low-voltage systems or near sensitive equipment, efficiently diverting surge currents and safeguarding critical electrical devices from lightning strikes and other transient events.
LSP Type 2 SPDs are engineered to protect electrical installations from transient overvoltages caused by lightning, power surges, and other disturbances. As a trusted surge protective device type 2 supplier, our solutions safeguard critical equipment, extend asset lifespan, and prevent costly downtime for businesses and homeowners alike.
The AC Type 2 SPD (Surge Protector) SLP40 series is typically installed in sub-distribution panels or machine control cabinets. These DIN-Rail AC Type 2 SPDs are designed for indoor installation, or can be mounted in a waterproof enclosure for reliable outdoor protection, ensuring safe operation against transient overvoltages and lightning surges.
The installation of Type 2 SPD (Surge Protection Device) should always be performed by qualified professionals. Proper DIN-rail mounting, correct wiring, and strict adherence to national and international electrical standards ensure reliable protection against transient overvoltages and lightning-induced surges.
Users can easily integrate the operational status of the Type 2 SPD (Surge Protection Device) into existing building management or industrial control systems via remote signaling terminals. This feature significantly enhances system safety, reliability, and real-time monitoring of Type 2 SPDs.
Our dedicated teams deliver Type 2 SPDs with client-focused service and superior quality, ensuring that our products meet market demands and provide reliable protection for residential, commercial, solar, and industrial electrical systems.
A Type 2 surge protection device (SPD)—also known as Type 2 SPD, Class 2 SPD, Class C SPD, or Class II SPD—is typically installed downstream of a Type 1 SPD or at distribution panels. It provides reliable protection against residual surges, transient overvoltages, and lower-energy spikes, working in combination with Type 1 surge protective devices to safeguard electrical installations.
The impulse current waveform of a Type 2 surge protection device (SPD) is defined according to IEC as follows:
O virtual origin of impulse current (Point of intersection with the time axis of a straight line drawn through the 10 % and the 90 % reference points on the stroke current front; it precedes by 0,1 T that instant at which the current attains 10 % of its peak value)
I peak current
i instantaneous value
Time 1 front time of impulse current
Time 2 time to half value on the tail of impulse current (typically T < 2 ms)
Sensing the Surge: When a voltage surge occurs, the electrical system experiences a rise above its normal operating level. The Type 2 surge protection device (SPD) is connected in parallel with the system and continuously monitors the voltage.
Redirecting Excess Energy: Once the Type 2 SPD detects that the voltage exceeds its predefined clamping voltage, it activates and quickly diverts the excess energy to the ground, protecting connected devices from damage.
Suppressing the Voltage Spike: The Type 2 surge protector limits the magnitude of the overvoltage to a safe level, safeguarding both the electrical installation and sensitive equipment.
Returning to Resting State: After discharging the surge energy, the Type 2 SPD resets to its normal state and continues monitoring for future surges. It operates without interrupting the normal power supply, ensuring continuous system operation.
LSP’s Type 2 surge protection devices (SPDs) undergo careful assembly and strict testing to ensure reliable performance and effective surge protection before reaching customers.
Designed with premium materials and advanced technology, LSP Type 2 SPDs deliver long-term performance, minimal maintenance, and consistent protection across commercial, industrial, solar, and residential systems, ensuring safety, reliability, and peace of mind for all types of installations.
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