Hager ARC916U MCB With Arc Detection 1P+N 6kA B-16A 2M Arc fault protection devices (AFDD) are designed to help prevent fires by identifying fire propagating electrical arcs. These can be caused by a number of things such as rodent damage, faulty cable insulation, crushed wires or even loose terminals. These devices combine conventional analogue measurements with microprocessors to quickly analyse data. The quick 'decision making' of the unit allows it to detect potential faults before they can cause fire and become a risk to property and life. Since the release of BS7671 18th edition, new regulation 421.1.7 recommends the installation of these devices in a number of AC final circuits. This is also likely to become mandatory in the future, so there's never been a better time to start looking at your projects and how you can get ahead of the competition for both safety and quality. Key Features Protection device which combines an MCB with an Arc Fault Detection Device Complies with BS EN 62606 Current rating 16A 6kA Available in B & C curve Connection capacity - Rigid=25mm², Flexible = 16mm² Circuit Breaker, Minature Circuit Breaker.