Varistor surge protector type 1+2 (class B+C) four-pole SPMO30B+C\4P

Protection of electrical installations against overvoltage – reliability and safety

The varistor surge protector SPMO30B+C\4P is a key element in protecting electrical installations in residential buildings, single-family homes, and small commercial facilities. Its task is to protect against the effects of lightning strikes and other voltage surges that can damage sensitive electrical equipment. This protector effectively minimizes the risk of failure and ensures uninterrupted power supply.

This four-pole model, compliant with IEC/EN 61643-11, combines the features of Type 1 and Type 2 surge protectors (Class B+C), which means it provides comprehensive protection against both direct (lightning strikes) and indirect (network disturbances) overvoltages. Tested by the Institute of Plasma Physics and Microsynthesis, it guarantees high quality and efficiency.

Characteristics and application

The SPMO30B+C\4P surge protector is designed for use in TN-S/TN-C networks. Its construction based on varistor technology allows for a quick response to sudden voltage increases, dissipating the surge energy to the ground. This protects devices connected to the installation, such as RTV equipment, computers, lighting, and home automation systems. Mounting is done on a TH35 rail, which facilitates integration with the existing distribution board.

It is worth noting the nominal discharge current In of 30kA and the maximum discharge current Imax of 60kA. These parameters indicate the high resistance of the surge protector to strong surge currents. Additionally, the presence of remote failure indication (change of insert color from green to red) allows for quick identification of the need for device replacement. A recommended preliminary fuse is a maximum of 125 gL/gG – selecting the appropriate protection is crucial for the proper operation of the entire overvoltage protection system.

Key features and benefits

• Versatile protection: The combination of Class B+C provides protection against both direct and indirect overvoltages.
• High efficiency: Nominal discharge current of 30kA and maximum discharge current of 60kA guarantee effective dissipation of surge energy.
• Failure indication: Remote indication of the insert status facilitates control and maintenance.
• Easy installation: Mounting on a TH35 rail enables quick and easy integration with the existing distribution board.
• Durability and reliability: Made of high-quality materials (PA6 and PBT) and UL94-V0 flammability test ensures long-term operation.
• Compliance with standards: Meets the requirements of IEC/EN 61643-11, confirming its safety and effectiveness.
• Universality: Designed for TN-S/TN-C networks, which increases the range of applications.