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NH MCB Distribution Boards
Switches Multipole: 415V 50Hz
BSEN 60947-3 1992
Category of duty AC22A
MCBs BSEN 60898: 1991
Type B, C and D
Short circuit rating 6 & 10kA
Distribution Boards BS EN 60439-3
Degree of For indoor use only
Protection. (IP3X)
CAT REF DIMENSIONS
A mm B mm C mm
NHSPN0051
210
188 105
NHSPN0081
210
242 105
NHSPN00111
210
293 105
NHSPN00141
210
343 105
NHSPN00161
210
394 105
NHSPN00191
210
394 105
CAT REF DIMENSION
A mm
NHTN4MR
490
NHTN6MR
570
NHTN8MR
650
NHTN12MR
815
NHTN16MR
895
NHTN20MR
1000
NHTN24MR
1140
Depth 165mm- all sizes
CAT REF DIMENSION
A mm
NHTN2540MR
769
NHTN2560MR
823
NHTN2580MR
877
NHTN25120MR
985
NHTN25160MR
1093
NHTN25200MR
1201
NHTN25240MR
1309
*144mm
* including fixing feet which are 3.5mm high
107mm
37mm
430mm
Enclosure Top View
Cover & Door Top View
A
430mm
165mm
400mm
130mm
35mm
Enclosure Top View
Cover & Door Top View
B
B
C
A
125A DISTRIBUTION BOARDS
SINGLE PHASE DISTRIBUTION BOARDS
250A DISTRIBUTION BOARDS
CONSTRUCTION
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.
TheWYLEX PSB miniature circuit breakers
are rated at 10kA and are of the fault limiting
type.
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 (I
2
t) keeping additional damage at the
point of the fault to a minimum.Additionally
this allows discrimination with HRC fuses at
high fault levels.
STANDARDS
NHTN METER PACKS (EXTENSION)
CAT REF DIMENSIONS
A mm B mm C mm
NHTN125MP
245
430 144
NHTN250MP
245
430 144
NHAB DIN ACCESSORY BOXES
CAT REF DIN DIMENSION
MODULES A mm
NHEB
-
240
NHEB/DIN
18
240
NHAB
18
240
NHAB2
36
387
NHAB3
54
544
NHAB4
72
756
NHAB5
90
856