CONSUMER UNITS
TECHNICAL PRODUCT MANAGER UMER FAROOQ OUTLINES THE DESIGN CONCEPT BEHIND THE RANGE, WHICH AIMS TO IMPROVE INSTALLATION EFFICIENCY…
Efficiency, reliability and consistency remain key priorities for electrical contractors working across residential and light commercial installations. Live Electrical’s SRN consumer unit range
As project timelines tighten and labour efficiency becomes
increasingly important, distribution equipment that simplifies installation
can provide valuable advantages on site. Live Electrical’s SRN
Surface-mounted SRN consumer unit.
range of metal consumer units has been developed with installation efficiency as a central design focus. Rather than concentrating purely on enclosure construction, the range adopts a system-led approach that combines a streamlined internal layout with simplified circuit connection methods. The result is a consumer unit designed to reduce installation time while maintaining the performance and compliance expected of modern distribution equipment. Suitable for both surface-mounted and recessed (flush-mounted) installations, the SRN range can be used across a wide variety of domestic and light commercial projects throughout the UK. Enclosure designed for practical installation The SRN enclosure is manufactured from robust non-combustible steel, delivering the mechanical strength and fire performance required under current installation standards. Multiple cable knockouts are positioned around the enclosure, including the rear panel, allowing cables to enter from different directions depending on site layout and routing. This flexibility can be particularly useful when working within confined spaces, helping installers organise cable entry and reduce congestion within the board. Each consumer unit is supplied with a DIN rail and earth terminal bar, allowing installers to begin assembly immediately. Internal spacing has been arranged to provide clear access for wiring, helping maintain an organised layout that also supports straightforward inspection and testing.
RCBOs without fly neutral leads A key feature of the SRN system is the use of the RNC series single-module double-pole RCBOs, designed without traditional fly neutral leads. In conventional consumer units, RCBOs often include flexible neutral leads that must be individually connected to the neutral bar. As circuit numbers increase, these extra conductors can accumulate inside the enclosure, creating wiring congestion and slowing installation. By eliminating the fly neutral lead, the SRN system simplifies internal wiring. Both the live and neutral conductors of each circuit are terminated directly into the RCBO. This reduces the number of conductors within the enclosure and creates a cleaner internal layout, helping speed up installation while also improving accessibility for inspection, testing and maintenance. Integrated live and neutral busbar system Complementing the RCBO design is the SRN range’s integrated 100A copper busbar system. This assembly distributes both live and neutral conductors through a single compact
structure, connecting the main switch and all RCBOs without the need for additional neutral wiring. RCBOs can be installed directly onto the busbar, allowing the board to be assembled quickly and efficiently while maintaining a tidy internal arrangement. Modular busbar scalability The busbar architecture is also modular, allowing additional sections to be joined simply by sliding them together. This enables installers to configure boards for different circuit requirements using the same system platform. By addressing common installation challenges such as wiring congestion and circuit termination efficiency, the SRN range demonstrates how thoughtful engineering can support faster and more organised installations without compromising safety, compliance or reliability.
To find out more about the SRN consumer unit range and other products from Live Electrical, visit: www.liveelectrical.co.uk Want to know more?
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