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Technical
Section 9
Dimensions
Section 10
Isobar 4c
TP&N Type B incomers
Distribution boards
Incoming devices without extension enclosure
Part number
Description
Rating
Voltage Number of poles
MGBNI160SD
Switch disconnector 160
415V 3+N
MGBNI200SD
Switch disconnector 200
415V 3+N
MGBNI250SD
Switch disconnector 250
415V 3+N
MGBNCB1603
MCCB
160
415V 4
MGBNCB2003
MCCB
200
415V 4
MGBNCB2503
MCCB
250
415V 4
MGNPB250TB
Terminal block
250
415V 4
Terminal blocks 125/250A
Part number
Rating
Voltage
Notes
MGTB1254
125A
415V
MGNTB2504
250A
415V
With extension box
Technical data
Cable capacity
125A - 50mm
2
, 250A - M8 copper pad
Terminal tightening torque 125A - 3.5Nm, 250A - 15Nm
Moulded case circuit breakers MCCBs 100A - 250A
Part number
Rating
Voltage
Number of poles
MGNCB1004
100A
415V
4
MGNCB1604
160A
415V
4
MGNCB2004
200A
415V
4
MGNCB2504
250A
415V
4
MGALK
Allen key kit for fitting devices >160A
n
Devices fit directly into distribution board and are supplied with 270mm
extension box and terminal shield
n
Can be fitted with shunt trip, UVR and auxiliary switch
n
Distribution boards fitted with a MCCB are suitable for installations with fault
levels up to 25kA
Technical data
Tested to
BS EN 60947-2
Category of duty
AC22
Positive contact indication In accordance with BS 7671
Cable capacity
50mm
2
- 185mm
2
Terminal tightening torque 100A - 10Nm, 160, 200 and 250A - 15Nm
Dual source incomer
Part number
Rating
Voltage
Number of poles
MGNDSI
<125A
415V
4
To be used in dual source applications, with standby being a portable/fixed
generator set or second transformer. Mechanically interlocks any combination of
the following incoming 4P devices:
n
MGI1254
n
C120
n
C60
A padlocking facility enables either one or both to be locked in the OFF position or
using MGLA for locking ON.
Front cover is lockable using
MGBL
.
Cable capacity 50mm
2
.
Supplied complete with board connection.
}
To be ordered separately.
Contactor incomer 100A
Part number
Description
MGBN100CCI
Provides contactor control and isolation of Isobar 4c
B type boards
Kit includes:
n
100A contactor 240Vac coil (Part number
15978
)
n
Switch disconnector 100 amp 4 pole
n
Extension box 270mm
n
Interconnections
n
100A terminal block