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  MCBs (5,187 items)

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Siemens SENTRON 5SY4 MCB, 4P, 1.6A Curve D, 400V AC, 72V DC, 5 kA Breaking Capacity / 2128831 (2 offers) 
The miniature circuit breaker provides voltage of 400 V with 4-pole configuration. In the event of an overload or short-circuit, circuit breakers safely cut off the connected circuit and reliably p...
Siemens
5SY4415-8
from £ 94.06*
per piece
Siemens Sentron 5SY4 MCB, 4P, 16A Curve B, 400V AC, 10 kA Breaking Capacity / 1243196 (2 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4416-6
from £ 42.97*
per piece
Siemens Sentron 5SY4 MCB, 4P, 16A Curve C, 400V AC, 10 kA Breaking Capacity / 1243197 (3 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4416-7
from £ 55.65*
per piece
Siemens Sentron 5SY4 MCB, 4P, 16A Curve D, 400V AC, 10 kA Breaking Capacity / 1243198 (3 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4416-8
from £ 76.72*
per piece
Siemens Sentron 5SY4 MCB, 4P, 20A Curve B, 400V AC, 10 kA Breaking Capacity / 1243147 (2 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4420-6
from £ 42.99*
per piece
Siemens Sentron 5SY4 MCB, 4P, 20A Curve C, 400V AC, 10 kA Breaking Capacity / 1243148 (3 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4420-7
from £ 55.76*
per piece
Siemens Sentron 5SY4 MCB, 4P, 20A Curve D, 400V AC, 10 kA Breaking Capacity / 1243149 (3 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4420-8
from £ 77.57*
per piece
Siemens Sentron 5SY4 MCB, 4P, 25A Curve B, 400V AC, 10 kA Breaking Capacity / 1243150 (2 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4425-6
from £ 43.01*
per piece
Siemens Sentron 5SY4 MCB, 4P, 25A Curve C, 400V AC, 10 kA Breaking Capacity / 1243199 (3 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4425-7
from £ 54.77*
per piece
Siemens Sentron 5SY4 MCB, 4P, 25A Curve D, 400V AC, 10 kA Breaking Capacity / 1243200 (2 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4425-8
from £ 77.46*
per piece
Siemens Sentron 5SY4 MCB, 4P, 32A Curve B, 400V AC, 10 kA Breaking Capacity / 1243201 (3 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4432-6
from £ 52.54*
per piece
Siemens 5SY4432-7 circuit breaker Miniature circuit breaker 4 (3 offers)
Siemens
5SY4432-7
from £ 65.08*
per piece
Siemens Sentron 5SY4 MCB, 4P, 32A Curve D, 400V AC, 10 kA Breaking Capacity / 1243203 (3 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4432-8
from £ 91.79*
per piece
Siemens Sentron 5SY4 MCB, 4P, 40A Curve B, 400V AC, 10 kA Breaking Capacity / 1243204 (3 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4440-6
from £ 64.02*
per piece
Siemens Sentron 5SY4 MCB, 4P, 40A Curve C, 400V AC, 10 kA Breaking Capacity / 1243205 (3 offers) 
Automatic cut-out, 5SY4 Series, 10 kA, B, C and D characteristic. Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devic...
Siemens
5SY4440-7
from £ 82.25*
per piece
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