Schneider SEL8F492 Surge Arrester - Acti9 iKQ IPRD F40 Replacement Cartridge - Type 2+3, KQ SPD, L-N

Product Overview

The Schneider Electric SEL8F492 Acti9 iKQ Type 2+3 L–N Replacement Cartridge is a high-quality, pluggable surge protection cartridge designed for use with Acti9 iPRD iKQ 1P+N and 3P+N surge protection devices. Engineered specifically for KQ II load centres, this replacement module ensures that electrical installations continue to benefit from effective, dependable protection against transient overvoltages.

As part of the Acti9 range, the cartridge is designed to deliver long-term performance for residential, commercial, industrial, and tertiary applications. Whether replacing a depleted module or performing planned maintenance, this plug-in cartridge enables quick, secure changeover without disrupting system operation.

Compatibility and System Integration

The SEL8F492 cartridge is fully compatible with:

• Acti9 iPRD iKQ 1P+N SPDs
• Acti9 iPRD iKQ 3P+N SPDs
• KQ II Load Centre A (Single-Phase)
• KQ II Load Centre B (Three-Phase)

Suitable for TT and TN-S earthing systems, it offers versatile installation flexibility across a variety of UK electrical systems. With its MOV technology and fast <25 ns response time, it delivers dependable surge suppression for modern electrical networks.

Key Features

• Provides robust differential-mode protection up to 40 kA, safeguarding equipment against transient overvoltages.
• A modular plug-in design with anti-vibration locking ensures secure, tool-free installation and rapid maintenance.
• The self-protected configuration eliminates the need for an external disconnector, simplifying installation.
• A green/red flag provides immediate visual confirmation of operational status.
• Designed specifically for Acti9 KQ II distribution boards for seamless system integration.

Technical Specification

• Configuration: L–N Cartridge for Acti9 iPRD iKQ SPDs
• Nominal Discharge Current (In): 20kA
• Maximum Discharge Current (Imax): 40kA
• Voltage Protection Level (Up): <1.5kV
• Operating Voltage: 240V AC, 50/60Hz
• Uc Rating: 340V (L–N)
• Open Circuit Voltage (Uoc): 6kV
• Response Time: <25 ns
• Short-Circuit Withstand: 25kA
• Operating Temperature: –40°C to +85°C
• Dimensions: 18(W) × 45(H) × 58(D) mm
• Weight: 68g
• Colour: White (RAL 9003)
• Material: Thermoplastic
• Standards: IEC 61643-11:2011, BS EN 61643-11:2012+A11:2018
• EAN: 3606487695271

Why Choose the Schneider Acti9 iKQ L–N Replacement Cartridge?

The SEL8F492 cartridge provides a reliable, cost-effective way to maintain surge protection in Acti9 iKQ systems. Its tool-free installation, robust electrical performance, and straightforward monitoring make it ideal for professional electricians working on KQ II load centres.

Backed by Schneider Electric’s reputation for durability and compliance, this replacement cartridge ensures ongoing system protection, reduced downtime, and full adherence to UK surge protection standards.