Varistor surge protector SIMTEC (B+C) ST30B+C4P 85201010

Electrical installation protection with SIMTEC ST30B+C 4P

The SIMTEC ST30B+C 4P varistor surge protector is a key element in protecting electrical installations in residential and small industrial buildings. The device effectively protects against the effects of atmospheric overvoltages (lightning strikes) and disturbances from the power grid or other consumers. Installation in the main distribution board or cable connection ensures comprehensive protection.

This surge protector belongs to class B+C, which means it offers two-stage protection, minimizing the risk of damage to sensitive electronic equipment. It does not require the use of additional decoupling chokes, which simplifies installation and reduces costs.

Construction and application

SIMTEC ST30B+C 4P uses varistor technology for fast and effective dissipation of excess energy during overvoltages. The four-pole design provides protection for all phase and neutral conductors. The width of 4 modules allows for easy integration with existing distribution boards. The surge protector is designed for mounting on a TH-35 mm rail, which is standard in most electrical installations.

The intended use of the surge protector includes:

• Protection of residential buildings
• Protection of small industrial facilities
• Installations in cable connections
• Main distribution boards of buildings

Key features and benefits

• Two-stage protection: Provides effective protection against overvoltages of various origins.
• Class B+C: Meets safety standards for electrical installations.
• High efficiency: Surge current up to 30kA guarantees protection even with strong overvoltages.
• Simple installation: Mounting on a standard TH-35 mm rail facilitates installation and replacement.
• Optical signaling: The optical indicator informs about the operation of the surge protector, facilitating diagnostics.
• Wide range of wire cross-sections: Support for wires with a cross-section from 2.5 mm² to 35 mm² ensures compatibility with various types of installations.
• Universality: Suitable for IT, TN, TN-C, TN-C-S and TT networks.

The SIMTEC ST30B+C 4P surge protector is an investment in the safety and reliability of the electrical installation, protecting devices from costly failures caused by overvoltages.