Product Description

The Schneider Electric A9L8F492 is a genuine replacement cartridge designed for use with Acti9 iPRD F40r 1P+N and 3P+N surge protective devices. It provides reliable differential mode protection between live and neutral (L-N), safeguarding electrical installations against transient overvoltages caused by lightning strikes or switching events.

This Type 2+3 surge arrester cartridge incorporates an integrated, surge-adapted backup fuse and uses MOV technology to deliver fast, effective protection. A clear front-facing visual indicator shows operational status, with a green flag when functioning correctly and a red flag when replacement is required.

Designed for quick, plug-in replacement, the cartridge helps maintain system uptime while ensuring continued compliance with surge protection standards. It is compatible with TT and TN-S earthing systems and is suitable for residential, commercial and industrial installations.

Key Features

• Replacement cartridge for Acti9 iPRD F40r SPDs
• Suitable for 1P+N and 3P+N surge protective devices
• Type 2 + 3 surge protection for differential mode (L-N)
• Integrated surge-adapted backup fuse
• Plug-in design for fast and easy replacement
• Clear green/red visual status indication
• Compatible with TT and TN-S earthing systems
• Designed for residential, commercial and industrial use

Technical Specification

• Range: Acti9
• Product Type: Surge arrester cartridge
• Device Short Name: iPRD F40
• Compatibility: Acti9 iPRD F40r 1P+N and 3P+N
• Standards: IEC 61643-11:2011, BS EN 61643-11:2012+A11:2018
• Rated Operational Voltage (Ue): 240V AC, 50/60Hz
• Maximum Continuous Operating Voltage (Uc): 340V L-N
• Nominal Discharge Current (In): 20kA (L-N)
• Maximum Discharge Current (Imax): 40kA (L-N)
• Voltage Protection Level (Up): <1.5kV
• Open Circuit Voltage (Uoc): 6000V
• Short-Circuit Withstand: 25kA
• Response Time: <25ns
• Mounting: Plug-in cartridge
• Dimensions (H × W × D): 45 × 18 × 58 mm
• Weight: 68 g
• Colour: White (RAL 9003)
• Operating Temperature: –40°C to +85°C

Data Sheet

Download the Schneider Electric A9L8F492 data sheet (PDF)

Instruction Manual

View the Schneider Acti9 KQ SPD brochure