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STANDARDS Switches


MCBs


CONSTRUCTION


Multipole: 415V 50Hz BSEN 60947-3 1992 Category of duty AC22A


BSEN 60898: 1991 Type B, C and D


Short circuit rating 6 & 10kA Distribution Boards BS EN 60439-3 Degree of


Protection. (IP3X) 430mm


For indoor use only


Wylex NH MCB distribution board enclosures are fabricated in heavy gauge steel and are rust protected and highly resistant to both weathering and mechanical damage. Incorporated in the distribution boards are multi-terminal dual earth and neutral bars. They are designed for ease of installation and have ample wiring space.


The WYLEX PSB miniature circuit breakers are rated at 10kA and are of the fault limiting type.


125A DISTRIBUTION BOARDS CAT REF


A


NHTN4 NHTN6 NHTN8 NHTN12 NHTN16 NHTN20 NHTN24


*144mm


Enclosure Top View Cover & Door Top View


* including fixing feet which are 3.5mm high


SINGLE PHASE DISTRIBUTION BOARDS CAT REF


mm A


NHSPN0051 NHSPN0081 NHSPN00111 NHSPN00141


BC NHSPN00161 NHSPN00191


210 210 210 210 210 210


188 242 293 343 394 394


107mm 37mm


Depth 165mm- all sizes


DIMENSION A mm


488.4 569.4 650.4 812.4 893.4 974.4


1136.4


When a short circuit occurs, the current operates a solenoid which trips the mechanism and forces the moving contact away from the fixed contact. The arc generated is forced into an arcing chamber which incorporates splitter plates, to divide and cool it, reducing the total operating time to less than 5ms, This high speed operation substantially reduces the ‘let through’ energy (I2t) keeping additional damage at the point of the fault to a minimum. Additionally this allows discrimination with HRC fuses at high fault levels.


250A DISTRIBUTION BOARDS CAT REF


NHTN2540 NHTN2560 NHTN2580 NHTN25120 NHTN25160 NHTN25200 NHTN25240


NHTN METER PACKS CAT REF


NHTN125MP NHTN250MP


DIMENSIONS A mm B mm C


105 105 105 105 105 105


DIN


NHAB2 NHAB3 NHAB4 NHAB5


630 Height A


200A-250A PANEL BOARDS MODULAR HEIGHT 17 17 20 17 17 20


164.5 Top View Depth 165mm- all sizes 630


400A PANEL BOARDS MODULAR HEIGHT 20 20 23 26 20 20 23 26


HEIGHT (mm) 902 902


1060 902 902


1060


HEIGHT (mm) 1060 1060 1317 1375 1060 1060 1317 1375


Height


NH125 MODULAR MCB/DIN ENCLOSURES MODULAR HEIGHT 4 8


HEIGHT (mm) 210 420


NH 125 G FRAME METER PACKS CAT REF 164.5 Top View


NHG250MP NHG400MP


HEIGHT (mm) 210


210


WIDTH (mm) 630


630


DEPTH (mm) 165


165


A(mm) 420 420 420 420 420 420


A(mm) 577.5 577.5 577.5 577.5 577.5 577.5 577.5 577.5


18 18 36 54 72 90


DIMENSION A mm


650 815 815 895 975


1085 1190


DIMENSIONS A mm B mm C mm


245 245


430 430


NHAB DIN ACCESSORY BOXES CAT REF


NHEB


NHEB/DIN NHAB


MODULES -


144 144


45


DIMENSION A mm


240 240 240 387 544 756 856


CAT REF


NHPB6SW250 NHPB8SW250 NHPB12SW250 NHPB6CB200 NHPB8CB200 NHPB12CB200


CAT REF


NHPB6SW400 NHPB8SW400 NHPB12SW400 NHPB16SW400 NHPB6CB400 NHPB8CB400 NHPB12CB400 NHPB16CB400


CAT REF


TOORDER TOORDER


NH MCB Distribution Boards NHG125 MCCB Panelboards


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