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4.3
Miniature Circuit Breakers
10kA & 15kA B, C & D Curve
Single Pole MCBs
Rating
Width
Cat ref.
Cat ref.
Cat ref.
(17.5mm)
“B” Curve
“C” Curve
“D” Cruve
0.5A
1 Mod
-
NCN100A
NDN100A
1A
1 Mod
-
NCN101A
NDN101A
2A
1 Mod
-
NCN102A
NDN102A
3A
1 Mod
-
NCN103A
NDN103A
4A
1 Mod
-
NCN104A
NDN104A
6A
1 Mod
NBN106A
NCN106A
NDN106A
10A
1 Mod
NBN110A
NCN110A
NDN110A
16A
1 Mod
NBN116A
NCN116A
NDN116A
20A
1 Mod
NBN120A
NCN120A
NDN120A
25A
1 Mod
NBN125A
NCN125A
NDN125A
32A
1 Mod
NBN132A
NCN132A
NDN132A
40A
1 Mod
NBN140A
NCN140A
NDN140A
50A
1 Mod
NBN150A
NCN150A
NDN150A
63A
1 Mod
NBN163A
NCN163A
NDN163A
Double Pole MCBs
Rating
Width
Cat ref.
Cat ref.
Cat ref.
(35mm)
“B” Curve
“C” Curve
“D” Cruve
0.5A
2 Mod
-
NCN200A
NDN200A
1A
2 Mod
-
NCN201A
NDN201A
2A
2 Mod
-
NCN202A
NDN202A
3A
2 Mod
-
NCN203A
-
4A
2 Mod
-
NCN204A
NDN204A
6A
2 Mod
NBN206A
NCN206A
NDN206A
10A
2 Mod
NBN210A
NCN210A
NDN210A
16A
2 Mod
NBN216A
NCN216A
NDN216A
20A
2 Mod
NBN220A
NCN220A
NDN220A
25A
2 Mod
NBN225A
NCN225A
NDN225A
32A
2 Mod
NBN232A
NCN232A
NDN232A
40A
2 Mod
NBN240A
NCN240A
NDN240A
50A
2 Mod
NBN250A
NCN250A
NDN250A
63A
2 Mod
NBN263A
NCN263A
NDN263A
Description
These MCBs allow you to ensure
• Protection against short
circuits
• Protection against overload
current
• Control
• Isolation
• Trip free mechanism
Isolation
The state of isolation is clearly
indicated by the “OFF”
mechanical position on the
toggle with the green colour.
Will accept accessories, see
page 4.5.
Connection capacity
• 25mm
2
flexible conductor
• 35mm
2
rigid conductor
Complies with:
• BS EN 60898 (10kA)
• BS EN 60947-2 (15kA)
NCN116A
NCN216A
Protection
Devices




