Wholesale 500VDC T2 Surge Protective Device with 40kA Maximum Discharge Capacity Supplier, Factories

This 3pole T2 class surge protective device is engineered for reliable overvoltage protection in 500VDC electrical systems. The device features a robust plastic housing in distinctive red color, providing both high visibility and reliable insulation properties. With a maximum discharge capacity of 40kA and standard discharge current of 20kA, this surge protector offers effective defense against lightninginduced surges and transient overvoltages. The product is designed to meet international standards for surge protective devices, ensuring consistent performance in various electrical environments.

Product Description

Key Features and Advantages
The threepole configuration provides comprehensive protection for positive, negative, and ground lines in DC systems. The T2 classification confirms the device's capability to handle indirect lightning effects and switching surges according to international standards. The 500VDC voltage rating makes it suitable for mediumvoltage applications commonly found in industrial and renewable energy systems.

The integrated thermal protection mechanism ensures automatic disconnection during overload conditions, enhancing system safety. A clear visual status indicator allows for immediate operational assessment, while the DIN rail mounting design facilitates easy installation in standard electrical enclosures. The screw terminal connections provide secure wiring implementation, maintaining reliable performance over extended periods.

Application Scenarios

This protective device is particularly suitable for photovoltaic systems, where it protects solar inverters and DC distribution equipment. Industrial applications include protection for motor drives, control systems, and automation equipment operating at 500VDC. The device also provides effective surge protection for electric vehicle charging infrastructure, telecommunications power systems, and railway electrification systems.

Additional applications include backup power installations, mining equipment, and building management systems. The unit can be used in both indoor and sheltered outdoor environments when installed in appropriate enclosures, offering versatile protection solutions for various electrical systems.
Technical Specifications
Max Discharge Current: 40kA (8/20μs)
Standard Discharge Current: 20kA (8/20μs)
Type: T2 (Class II)
Rated Voltage: 500VDC
Protection Level: ≤4.0kV
Number of Poles: 3P
Response Time: <25ns
Mounting: DIN rail (35mm)
Operating Temp: -45°C to +85°C
Standards: IEC 61643-11

The device maintains stable performance characteristics throughout its service life, demonstrating consistent surge protection capability under specified operating conditions. The design focuses on reliability and safety, with builtin features that ensure proper operation in various electrical environments. The product meets relevant international standards for surge protective devices, providing assurance of quality and performance for electrical system protection applications.

The red housing offers easy identification in electrical enclosures, while the compact design allows for efficient space utilization in control cabinets. The combination of technical specifications and practical design features makes this surge protective device a reliable choice for protecting 500VDC electrical systems against transient overvoltages.

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Frequently Asked Questions
Q1: What is the primary purpose of this 3P 500VDC Surge Protective Device?
It is designed to protect DC electrical systems, particularly photovoltaic and industrial equipment, against indirect lightning strikes and switching surges.
Q2: What does the T2 (Class II) classification signify?
The T2 rating indicates the device is tested and capable of handling transient overvoltages resulting from switching operations or lightning induction, as per IEC 61643-11 standards.
Q3: How do I monitor the health of the surge protector?
The device features a visual status indicator on the front panel. A color change (typically to red) signals that the protective module has reached its end of life and requires replacement.
Q4: Can this device be used for solar inverter protection?
Yes, its 500VDC rating and threepole configuration make it an ideal choice for protecting solar inverters and DC distribution boxes in PV installations.
Q5: Is it difficult to install in existing cabinets?
No, the device is designed for standard 35mm DIN rail mounting, which is the universal standard for electrical control cabinets and distribution boards.
Q6: What is the maximum discharge capacity?
The device has a maximum discharge current (Imax) of 40kA (8/20μs waveform), providing robust protection for sensitive electronics.

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