FS-LB-I Intrinsically Safe Surge Protection Barrier with 20 kA Surge Current and DIN Rail Mount for Industrial Automation

The PEPPERL+FUCHS FS-LB-I Surge Protection Barrier is a 1-channel field mount module designed to protect sensitive field instruments and transmitters from induced transients caused by lightning strokes, switching impulses, and other electrical disturbances.

This surge protection barrier limits induced transients by diverting transient current to ground and limiting signal line voltage to safe levels during surge events. It provides 85 V line-to-line and 500 V line-to-ground clamping voltage for protected instruments.

• Installs in available conduit or cable gland openings on process transmitters
• Intrinsically safe design for reliable signal loop protection
• Excellent surge suppression and overvoltage protection performance
• Low insertion loss and high signal transparency
• Compact size for space-saving installation in control cabinets
• DIN rail mounting for quick and easy assembly
• Stable anti-interference performance in harsh environments
• Wide compatibility with 4-20mA analog signal loops
• Rugged construction for long service life and low maintenance

FS-LB-I is widely used in industrial automation, process control systems and hazardous area facilities including:

• Pressure transmitters
• Temperature sensors
• Flow meters
• Control valves
• Other field equipment

Industries served: Oil & gas, chemical, metallurgy, pharmaceutical, manufacturing, and other industries requiring high safety standards and stable signal transmission.

FS-LB-I delivers professional surge protection with high reliability and easy installation. It reduces equipment failure rates, lowers maintenance costs and improves overall system stability. With superior performance and cost-effective design, FS-LB-I is an ideal safety solution for industrial automation and process control systems worldwide.