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Categories Starbreaker

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MCBs (14) 14 Products

RCBOs (13) 13 Products

AFDDs (22) 22 Products

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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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PV (56) 56 Products

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Categories AFDDs

AFDD RCBO B Curve (8) 8 Products

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Categories RCBOs

Miniature RCBOs (13) 13 Products

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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

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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

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MCBs (85) 85 Products

RCBOs (21) 21 Products

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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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Contactors (17) 17 Products

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Categories Legacy

Powerstar (27) 27 Products

Loadstar (92) 92 Products

Polestar Compact (149) 149 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 (16) 16 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 (28) 28 Products

AFDD MCBs (16) 16 Products

Enclosures (8) 8 Products

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Categories Alpha BSIII

Panelboards (12) 12 Products

Incoming Options (25) 25 Products

Incoming Metering (9) 9 Products

Outgoing MCCBs (303) 303 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 (331) 331 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 (30) 30 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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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