Product Description

The Schneider Electric Acti9 iPRD F40r (A9L8F451) is a high-performance surge protective device designed to safeguard electrical installations in residential, commercial and industrial buildings. It protects against both direct and indirect transient overvoltages, helping to maintain continuity of service and reduce the risk of equipment damage.

This 1P+N Type 2+3 surge arrester features an integrated, surge-adapted backup fuse and pluggable cartridges for quick replacement when damaged. Visual local status indication is provided via a front-facing flag (green for operational, red for replacement required), alongside remote signalling for monitoring system status.

Compatible with TT, TN-S and TN-C-S earthing systems, the device operates at 230/240V AC and delivers robust protection with fast response times. Its compact, plug-on design ensures straightforward installation within Acti9 distribution systems.

Key Features

• Type 2 + 3 surge protective device for comprehensive overvoltage protection
• 1P+N configuration for single-phase installations
• Integrated, surge-adapted backup fuse
• Remote signalling contact for system monitoring
• Local visual status indication (green/red flag)
• Pluggable cartridge design for fast replacement
• Compatible with TT, TN-S and TN-C-S earthing systems
• Compact plug-on mounting for Acti9 chassis

Technical Specification

• Product Range: Acti9
• Product Type: Surge arrester with pluggable cartridge
• Device Short Name: iPRD F40r
• Standards: IEC 61643-11:2011, BS EN 61643-11:2012+A11:2018
• Rated Operational Voltage (Ue): 230/240V AC, 50/60Hz
• Maximum Continuous Operating Voltage (Uc): 340V L-N / 305V N-PE
• Nominal Discharge Current (In): 20kA (L-N), 40kA (N-PE)
• Maximum Discharge Current (Imax): 40kA (L-N), 65kA (N-PE)
• Voltage Protection Level (Up): <1.5kV (L-N and N-PE)
• Open Circuit Voltage (Uoc): 6000V
• Short-Circuit Withstand: 25kA
• Response Time: <25ns (L-N), <100ns (N-PE)
• IP Rating: IP20 (when wired)
• IK Rating: IK05
• Operating Temperature: –40°C to +85°C
• Dimensions (H × W × D): 129 × 18 × 85 mm
• Weight: 142 g
• Colour: White (RAL 9003)

Data Sheet

Download the Schneider Electric A9L8F451 data sheet (PDF)

Instruction Manual

View the Schneider Acti9 KQ SPD brochure