CBI QFLN‑4(13) 3P+N Mini-Rail Surge Arrester – 5 kA

QFLN-4(13)

The CBI QFLN-4(13) 3P+N Mini-Rail Surge Arrester – 5kA is a Class II Surge Protection Device (SPD) designed to protect three-phase electrical installations and sensitive electronic equipment from damaging voltage surges. It helps minimise the effects of lightning-induced surges and switching transients, making it ideal for residential, commercial, and industrial applications.

Featuring a 3 Pole + Neutral (3P+N) configuration, the surge arrester mounts easily on CBI Mini Rail systems. Its compact 52mm width allows for efficient installation in distribution boards while saving valuable panel space.

The QFLN-4(13) uses Metal Oxide Varistor (MOV) technology to safely divert excess surge energy away from connected equipment. In addition, the integrated LED status indicator allows users to quickly confirm that the device is operating correctly. A built-in thermal disconnect mechanism further improves safety by automatically disconnecting the SPD if it reaches an unsafe operating temperature.

Whether installed in homes, offices, factories, or commercial facilities, the CBI QFLN-4(13) provides dependable surge protection for electrical equipment and distribution boards while delivering the trusted quality expected from CBI.

Key Features

• 3 Pole + Neutral (3P+N) configuration
• Class II Surge Protection Device (SPD)
• Nominal discharge current: 5kA (In)
• Maximum discharge current: 10kA (Imax)
• Suitable for 275V AC systems
• Mini-Rail mounting
• Metal Oxide Varistor (MOV) technology
• Voltage limiting (clamping) protection
• LED status indicator
• Built-in thermal disconnect device
• Protects against lightning-induced and switching surges
• Compact 52mm width
• IP20 rated
• Suitable for residential, commercial, and industrial applications
• Premium CBI quality and reliability