Surge protective device T2 20kA 4P 412223

Effective protection of electrical installations with Legrand ON300 surge protectors

This four-pole Type 2 surge protector with a 20kA impulse current is a key element in protecting electrical installations from the effects of overvoltages. Designed for mounting on a standard TH-35 mm DIN rail, it provides protection against both atmospheric discharges and surges originating from the grid. Its versatility makes it ideal for both installers and end-users looking for reliable protection.

This surge protector belongs to the ON300 series from Legrand – solutions valued for their high quality and compliance with applicable standards (IEC/EN 61643-11). The use of a varistor as a limiting element ensures a quick and effective response to sudden voltage increases. This protects connected devices from damage caused by surges, extending their lifespan and minimizing the risk of failure.

Application and compatibility

This surge protector is designed to operate in popular network configurations: TN, TN-C, TN-S and TNC. Its versatility allows it to be used in a wide range of installations – from domestic to industrial. It is particularly recommended for installation in distribution boards, where it forms the first line of defense against the effects of surges. For optimal protection, it is recommended to use it in conjunction with appropriate overcurrent protection – a S 300 TX³/DX³ C 20A circuit breaker.

Practical features and benefits

• Replaceable cartridge with status indicator: Allows for quick assessment of the device's condition without the need for disassembly. A green indicator color indicates full efficiency, while orange signals the need to replace the cartridge. This simple solution facilitates maintenance and ensures continuous protection.
• Four-pole construction (4P): Provides comprehensive protection for all phase conductors in the circuit.
• Compact dimensions (4 modules): Allow for easy installation even in tight distribution boards.
• The surge protector is characterized by a rated current of 5kA, which effectively protects against frequent, minor surges.
• The impulse current reaches 20kA, providing protection against strong surges caused by lightning strikes or network failures.
• The maximum voltage (Uc) is 320V and is compatible with standard mains voltages, ensuring compatibility with most electrical devices.
• The protection level (Up) of 1.2kV limits the surge voltage to a safe level, protecting connected devices from damage.
• Made of high-quality materials, guaranteeing durability and reliability for long-term operation.

Thanks to these features, the Legrand ON300 surge protector is an investment in safety and peace of mind – for both professionals involved in electrical installations and for users who care about protecting their equipment.