Pepperl+Fuchs FN-LB-I DIN Rail Mount Surge Protection Barrier with Stainless Steel Housing and 20 kA Surge Current
Price:
Negotiable
MOQ:
1
Delivery Time:
ship out immediately after payment received
Brand:
PEPPERL+FUCHS
Product Description
Pepperl+Fuchs FN-LB-I DIN Rail Mount Surge Arrester for Hazardous Areas
Product Overview
The FN-LB-I is an intrinsically safe surge protection barrier designed for reliable signal and equipment protection in industrial process control systems. It effectively suppresses lightning surges, transient overvoltages, and electromagnetic interference to safeguard sensitive field instruments, transmitters, and control loops.
Function & Operation
This Surge Protection Barrier limits induced transients of different origin (e.g., lightning stroke, switching impulse, etc.). This is achieved by diverting the transient current to ground and limiting the signal line voltage to a safe level for the duration of the surge.
This barrier provides 85 V line-to-line and 500 V line-to-ground clamping voltage for the protected instruments. It also protects instruments that have less than 500 V isolation-to-ground.
Important: Surge Protection Barriers must always be connected to a solid and effective ground and be at the same equipotential level as the instrument it is protecting. The ground system must comply with all applicable regulations.
Key Features
- Intrinsically safe surge protection design
- Stable surge suppression for analog and digital signal loops
- Compact size for space-saving installation
- DIN rail mounting for quick and convenient setup
- Low insertion loss and high signal transparency
- Robust construction for harsh industrial environments
- Excellent anti-interference and anti-surge performance
- Suitable for long-term continuous operation
Technical Specifications
| Model | FN-LB-I |
| Protection Type | Surge Protection & Intrinsic Safety Barrier |
| Mounting | DIN Rail Mount |
| Application | Field Instruments, Transmitters, Control Loops |
| Environment | Industrial Automation & Hazardous Area Compatible |
| Function | Surge Suppression, Overvoltage Protection, Signal Safety Isolation |
| Max. Surge Current (8/20 µs) | 20 kA |
| Isolation from Earth | 500 V |
| SIL Rating | Up to SIL 3 acc. to IEC/EN 61508 |
| Thread | ½ NPT |
| Housing | Stainless Steel |
Applications
The FN-LB-I surge protection barrier is widely used in petroleum, chemical, pharmaceutical, metallurgy, and manufacturing industries. It provides reliable safety protection for 4-20mA signal loops, field sensors, pressure transmitters, temperature instruments, and I/O modules.
It is an ideal choice for projects requiring intrinsic safety, surge protection, and stable signal transmission in demanding industrial environments.
Why Choose FN-LB-I?
FN-LB-I delivers professional surge protection with high reliability and easy installation. It reduces equipment failure risk, extends service life, and improves system stability. With excellent performance and cost-effective design, it has become a preferred safety barrier for industrial automation and process control systems worldwide.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Shenzhen Hengyo Power Technology Co., Limited
Location
Room 2407, B Block No.145 Chengshi Zhuchang Bld, Bagua 2nd Rd, Futian Dist. Shenzhen City, China 518029
Contact Person
Vivian Chan