The CBI QFL-3(13) 3P Mini-Rail Surge Arrester – 10kA is a Class II Surge Protection Device (SPD) designed to protect three-phase electrical installations and sensitive equipment from transient overvoltages caused by lightning strikes and switching surges. Featuring a 3 Pole (3P) configuration, this compact surge arrester delivers reliable surge protection for residential, commercial, and industrial electrical systems.
Designed for dual mounting on CBI Mini Rail and standard DIN Rail, the unit incorporates MOV (Metal Oxide Varistor) technology, an LED status indicator for quick visual inspection, and an integrated thermal disconnect mechanism for enhanced safety and reliability. With a maximum discharge current (Imax) of 10kA and a nominal discharge current (In) of 5kA, it provides dependable protection while maintaining a compact 39mm width.
Key Features
- 3 Pole (3P) configuration
- Class II Surge Protection Device (SPD)
- Maximum discharge current (Imax): 10kA
- Nominal discharge current (In): 5kA
- 275V AC operating voltage
- Dual mounting for CBI Mini Rail and DIN Rail
- LED operational status indicator
- MOV (Metal Oxide Varistor) technology
- Integrated thermal disconnect protection
- Compact 39mm width
- IP20 rated
- Suitable for residential, commercial, and industrial applications
- Protects against lightning-induced and switching surges





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