CBI QFLN‑4(13) 3P+N Mini‑Rail Surge Arrester –10 kA

QFLN-4(13)D

The CBI QFLN-4(13) 3P+N Mini-Rail Surge Arrester – 10kA is a Class II Surge Protection Device (SPD) designed to protect three-phase electrical systems from damaging voltage surges. It helps protect electrical equipment against lightning strikes and switching transients. As a result, it is ideal for residential, commercial, and industrial applications.

The surge arrester features a 3 Pole + Neutral (3P+N) configuration and installs quickly on CBI Mini Rail systems. Its compact 52mm design saves valuable space inside distribution boards while allowing for fast and simple installation.

The QFLN-4(13) uses Metal Oxide Varistor (MOV) technology to safely divert excess surge energy away from connected equipment. It offers a maximum discharge current (Imax) of 10kA and a nominal discharge current (In) of 5kA. Therefore, it provides dependable protection against damaging overvoltage events.

For added convenience, the unit includes an LED status indicator that allows users to check the operating condition at a glance. In addition, the built-in thermal disconnect mechanism improves safety by automatically disconnecting the device if it reaches unsafe operating temperatures.

Whether installed in a home, office, factory, or commercial building, the CBI QFLN-4(13) delivers reliable surge protection and long-lasting performance backed by CBI’s trusted engineering.

Key Features

• 3 Pole + Neutral (3P+N) configuration
• Class II Surge Protection Device (SPD)
• Maximum discharge current (Imax): 10kA
• Nominal discharge current (In): 5kA
• 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