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Categories Starbreaker

Consumer Units & Enclosures (67) 67 Products

MCBs (14) 14 Products

RCBOs (13) 13 Products

AFDDs (22) 22 Products

Consumer Units Accessories (98) 98 Products

RCDs (3) 3 Products

SPD (1) 1 Products

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Categories Loadstar

Consumer Units & Enclosures (28) 28 Products

MCBs (16) 16 Products

RCBOs (20) 20 Products

Consumer Units Accessories (36) 36 Products

RCDs (12) 12 Products

SPD (2) 2 Products

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Categories Lifestar

RCDs (11) 11 Products

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Categories Isolation

Isolators & Switch Disconnectors (8) 8 Products

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Categories DIN Rail Mounted Accessory

Time Switch (14) 14 Products

Miniature SPD (2) 2 Products

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Categories SPD

Enclosed SPD (4) 4 Products

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Categories Legacy

Starbreaker (42) 42 Products

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Categories Consumer Units & Enclosures

Main Switch Only (16) 16 Products

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High Integrity (18) 18 Products

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PV (56) 56 Products

Meter Cabinet (16) 16 Products

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Categories AFDDs

AFDD RCBO B Curve (8) 8 Products

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AFDD MCB B Curve (6) 6 Products

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Categories RCBOs

Miniature RCBOs (13) 13 Products

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Categories MCBs

NHXL MCBs (17) 17 Products

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Categories Consumer Units Accessories

Consumer Unit Patresses (10) 10 Products

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Intumescents (5) 5 Products

Locking Devices (4) 4 Products

Blanks (3) 3 Products

Cable Entry (6) 6 Products

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Categories Lifeline

RCDs (13) 13 Products

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Categories Isolation

Isolators & Switch Disconnectors (33) 33 Products

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Categories DIN Rail Mounted Accessory

Bell Transformer (1) 1 Products

Contactor (7) 7 Products

SPDs (12) 12 Products

Time Switch (7) 7 Products

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Categories SPD

Loose SPD (10) 10 Products

Enclosed SPD (4) 4 Products

Miniature SPD (2) 2 Products

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Categories Legacy

RCBOs (21) 21 Products

MCBs (20) 20 Products

Consumer Units Accessories (3) 3 Products

Consumer Units & Enclosures (13) 13 Products

Lifeline (6) 6 Products

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Categories Loadstar

Distribution Boards Type 'A' (6) 6 Products

Lighting & Power Boards (13) 13 Products

Distribution Boards Type 'B' (14) 14 Products

Rowboard Service Centres (11) 11 Products

Incoming Options (17) 17 Products

Meter Kits (8) 8 Products

SPDs (4) 4 Products

MCBs (85) 85 Products

RCBOs (21) 21 Products

Accessories (28) 28 Products

RCCBs (2) 2 Products

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Categories Powerstar

Powerstar VM160 (181) 181 Products

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Categories Fusestar

Fuse Combination Units 20A to 32A (9) 9 Products

Fuse Combination Units 63A to 100A (9) 9 Products

Fuse Combination Units 125A to 200A (12) 12 Products

Fuse Combination Units 315A to 400A (7) 7 Products

Fuse Combination Units 630A to 800A (6) 6 Products

Enclosed Switch Disconnectors (14) 14 Products

Accessories (5) 5 Products

Busbar Enclosures (1) 1 Products

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Categories Surge Protection

SPDs (12) 12 Products

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Categories Modular Control Devices

Contactors (17) 17 Products

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Categories Legacy

Powerstar (27) 27 Products

Loadstar (92) 92 Products

Polestar Compact (149) 149 Products

Surge Protection (2) 2 Products

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Categories NH Distribution

Distribution Boards Type 'A' (6) 6 Products

Lighting & Power Boards (13) 13 Products

Distribution Boards Type 'B' (14) 14 Products

Rowboard Service Centres (5) 5 Products

Incoming Options (13) 13 Products

Meter Kits (8) 8 Products

SPDs (10) 10 Products

MCBs (86) 86 Products

RCBOs (34) 34 Products

Accessories (25) 25 Products

AFDDs (12) 12 Products

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Categories NH VM160

Panel Boards (9) 9 Products

Incoming Options (41) 41 Products

Outgoing MCCBs (59) 59 Products

Meter Kits (11) 11 Products

SPDs (3) 3 Products

Cableways (8) 8 Products

Accessories (50) 50 Products

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Categories NH Fuse

Fuse Combination Units - 20A to 32A (4) 4 Products

Fuse Combination Units - 63A to 100A (4) 4 Products

Fuse Combination Units - 125A to 200A (3) 3 Products

Fuse Combination Units - 315A to 400A (2) 2 Products

Fuse Combination Units - 630A to 800A (2) 2 Products

Enclosed Switch Disconnectors (7) 7 Products

Accessories (9) 9 Products

Busbar Enclosures (1) 1 Products

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Categories Legacy

NH Distribution (89) 89 Products

NH250 (18) 18 Products

NH VM160 (1) 1 Products

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Categories Alpha BSII

Distribution Boards Type 'B' (14) 14 Products

Incoming Options (15) 15 Products

Lighting & Power Boards (13) 13 Products

Distribution Boards Type 'A' (6) 6 Products

Meter Kits (17) 17 Products

SPDs (10) 10 Products

MCBs (82) 82 Products

RCBOs (29) 29 Products

AFDD RCBOs (10kA) (12) 12 Products

AFDD RCBOs (6kA) (16) 16 Products

AFDD MCBs (16) 16 Products

Enclosures (8) 8 Products

Accessories (85) 85 Products

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Categories Alpha BSIII

Panelboards (12) 12 Products

Incoming Options (25) 25 Products

Incoming Metering (9) 9 Products

Outgoing MCCBs (309) 309 Products

Outgoing Metering (5) 5 Products

SPDs (6) 6 Products

Outgoing Earth Leakage (3) 3 Products

Cableways & Enclosures (17) 17 Products

Accessories (86) 86 Products

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Categories Instinct

Ancillary Items (10) 10 Products

Socket Outlets (46) 46 Products

Data/Communication (48) 48 Products

Grid System (122) 122 Products

Isolator Switches (2) 2 Products

Control Plate Switches (50) 50 Products

Lighting Plate Switches (32) 32 Products

Connection Units (69) 69 Products

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Categories Capital

Ancillary Items (52) 52 Products

Socket Outlets (51) 51 Products

Data/Communication (51) 51 Products

Grid System (222) 222 Products

Lighting Plate Switches (46) 46 Products

Control Plate Switches (160) 160 Products

Connection Units (302) 302 Products

Isolator Switches (4) 4 Products

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Categories Ceiling Accessories

Ceiling Rose (3) 3 Products

Luminaire Support Couplers (19) 19 Products

Junction Boxes (4) 4 Products

Occupancy Sensors (5) 5 Products

Ceiling Switches (8) 8 Products

Lampholders (17) 17 Products

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Categories Raised Decorative

Socket Outlets (211) 211 Products

Data/Communication (56) 56 Products

Ancillary Items (14) 14 Products

Grid System (66) 66 Products

Lighting Plate Switches (98) 98 Products

Isolator Switches (6) 6 Products

Control Plate Switches (130) 130 Products

Connection Units (169) 169 Products

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Categories Screwless Low Profile Decorative

Socket Outlets (89) 89 Products

Data/Communication (34) 34 Products

Grid System (197) 197 Products

Control Plate Switches (80) 80 Products

Connection Units (29) 29 Products

Lighting Plate Switches (94) 94 Products

Isolator Switches (9) 9 Products

Ancillary Items (18) 18 Products

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Categories Screwless & Flatplate Grid Switches

Grid System (90) 90 Products

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Categories Metalclad

Data/Communication (3) 3 Products

Socket Outlets (26) 26 Products

Ancillary Items (4) 4 Products

Connection Units (18) 18 Products

Control Plate Switches (15) 15 Products

Lighting Plate Switches (3) 3 Products

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Categories Ingress Protected

Socket Outlets (5) 5 Products

Lighting Plate Switches (7) 7 Products

Data/Communication (2) 2 Products

Grid System (4) 4 Products

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Categories Capital Interior

Socket Outlets (111) 111 Products

Connection Units (52) 52 Products

Lighting Plate Switches (33) 33 Products

Control Plate Switches (19) 19 Products

Isolator Switches (5) 5 Products

Data/Communication (8) 8 Products

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Categories Screwless & Flatplate Interiors

Data/Communication (2) 2 Products

Socket Outlets (59) 59 Products

Control Plate Switches (56) 56 Products

Isolator Switches (6) 6 Products

Lighting Plate Switches (31) 31 Products

Connection Units (41) 41 Products

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Categories Elypse

Socket Outlets (186) 186 Products

Data/Communication (116) 116 Products

Grid System (146) 146 Products

Ancillary Items (20) 20 Products

Connection Units (64) 64 Products

Control Plate Switches (84) 84 Products

Isolator Switches (8) 8 Products

Lighting Plate Switches (335) 335 Products

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Categories Legacy

Capital (2) 2 Products

Screwless & Flatplate Decorative (168) 168 Products

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Categories 1000 Series

Ancillary Items (31) 31 Products

Socket Outlets (25) 25 Products

Data/Communication (39) 39 Products

Grid System (126) 126 Products

Lighting Plate Switches (31) 31 Products

Connection Units (155) 155 Products

Control Plate Switches (68) 68 Products

Isolator Switches (1) 1 Products

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Categories Casa

Ancillary Items (7) 7 Products

Socket Outlets (10) 10 Products

Data/Communication (18) 18 Products

Grid System (34) 34 Products

Lighting Plate Switches (15) 15 Products

Connection Units (45) 45 Products

Control Plate Switches (29) 29 Products

Isolator Switches (1) 1 Products

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Categories Ceiling Accessories

Ceiling Rose (1) 1 Products

Ceiling Switches (6) 6 Products

Lampholders (17) 17 Products

Junction Boxes (5) 5 Products

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Categories Raised Decorative

Socket Outlets (58) 58 Products

Data/Communication (26) 26 Products

Grid System (16) 16 Products

Ancillary Items (6) 6 Products

Lighting Plate Switches (60) 60 Products

Control Plate Switches (57) 57 Products

Connection Units (47) 47 Products

Isolator Switches (5) 5 Products

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Categories Flat Plate Decorative

Data/Communication (29) 29 Products

Socket Outlets (20) 20 Products

Ancillary Items (6) 6 Products

Lighting Plate Switches (51) 51 Products

Isolator Switches (5) 5 Products

Control Plate Switches (20) 20 Products

Connection Units (15) 15 Products

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Categories Metalclad

Socket Outlets (12) 12 Products

Grid System (6) 6 Products

Ancillary Items (2) 2 Products

Connection Units (10) 10 Products

Lighting Plate Switches (7) 7 Products

Control Plate Switches (7) 7 Products

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Categories 1000 Series Interior

Data/Communication (7) 7 Products

Socket Outlets (14) 14 Products

Lighting Plate Switches (14) 14 Products

Control Plate Switches (6) 6 Products

Connection Units (12) 12 Products

Isolator Switches (1) 1 Products

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Categories Residential Safety Solutions

Safety Alarms (4) 4 Products

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Categories Installation Boxes & Enclosures

Dry Lining Boxes (7) 7 Products

Flush Metal Boxes (25) 25 Products

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Categories Britmac Floor Boxes

Ancillary Items (8) 8 Products

Data/Communication (4) 4 Products

Socket Outlets (7) 7 Products

Accessory Plate (3) 3 Products

Compartment Box (5) 5 Products

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Categories Legacy
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Amendments to the 18th Edition

Discover more about Amendments to the 18th Edition of the IET wiring regulations (BS7671)
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About Electrium

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The electrical industry is brimmed full of fantastic stories, and we want to share them. On the Electrium Podcast we'll be chatting to the people who make our industry what it is.
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250A 4P Switch Disconnector

Wylex

250A 4P Switch Disconnector

For use in NH Distribution Boards. Supplied with mounting kits, links, and fixing screws.

CAT: NH250L4PSD

Downloads and Documentation

DataSheet For - NH250L4PSD

Installation Instructions