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MS
double sided busbar
technical information
24
Crossovers
n
General features
MS is fully compliant with BS EN 60439-2. Specifically, the rated current
of the Zucchini busbar trunking system is always referred to the average
ambient temperature of 40°C (NB : the standard requires 35°C), thus
offering the market suitably oversized products
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Trunking lengths
The components and the features of the MS trunking lengths are :
• a casing made of Senzimir quality galvanised steel, with a sheet-metal
thickness that allows its use as the protective earth (PE) and ensures
the electrical continuity during mounting with no added accessories
• section bar dimensions : 39 x 97 mm
• number of conductors : 4 with the same section 3P + N available for
capacities 63 A, 100 A and 160 A
• separation between the conductors using plastic insulating devices,
reinforced with 20% of glass fibres, which ensure a V1 self-
extinguishing degree (according to UL94) and are in compliance with
the glow-wire test according to IEC 60695-2-10
• tap-off outlets with a constant centre distance of 1 m on both sides of
the busbar (3 + 3 outlets every 3 m), set up for connection to tap-off
boxes
• an electric joint block, with silver-plated copper contacts for
automatically connecting live parts and the PE (protective earth)
Quick connection between straight lengths. One operation provides
an electrical and mechanical connection, whilst at the same time,
IP 40 protection is guaranteed. The upgrade to IP 55 is easily
achieved by adding joint covers and outlet covers. Flame retardant
in compliance with the IEC 60332-3 standard
• trunking lengths with fire barrier (internal + external) are used when
fire-resistant walls need to be passed through. The lengths fitted with
a fire barrier have been lab-tested (in accordance with DIN 4102-9
and EN 1366-3) in order to confirm that, if correctly installed, they will
maintain the essential fire-resistant features of the wall
• trunking lengths with thrust unit are provided with a device which
blocks the conductors from slipping when supporting the weight of
the riser (when installed vertically). This type of length is required for
10 m riser intervals
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Trunking components
IP 55 (according to BS EN 60529)
Horizontal elbow - right hand
Horizontal elbow - left hand
Vertical elbow - right hand
Vertical elbow - left hand
365
8
365
135
365
8
8
135
135
135
365
8
135
865
230 135
1000
3000
1000
230 135
865
1000
1000
97
70
25 18
39
L1
N
L2
L3
Right hand tees - male
365
8
365
8
135
Left hand tees - female
365
8
365
8
135
Left hand tees - male
365
8
365
8
135
365
8
365
8
135
All dimensions (mm) are nominal
Flexible elbow
8
216
615
Right hand tees - female
365
8
365
8
135