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  MCBs (5,075 items)

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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 £ 43.43*
per piece
from £ 43.43*
per piece
Siemens Sentron 5SY4 MCB, 4P, 25A Curve C, 400V AC, 10 kA Breaking Capacity / 1243199 (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
5SY4425-7
from £ 56.24*
per piece
from £ 56.24*
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 £ 78.40*
per piece
from £ 78.40*
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 £ 53.05*
per piece
from £ 53.05*
per piece
Siemens 5SY4432-7 circuit breaker Miniature circuit breaker 4 (3 offers)
Siemens
5SY4432-7
from £ 66.49*
per piece
from £ 66.49*
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 £ 92.98*
per piece
from £ 92.98*
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 £ 63.74*
per piece
from £ 63.74*
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 £ 83.95*
per piece
from £ 83.95*
per piece
Siemens Sentron 5SY4 MCB, 4P, 40A Curve D, 400V AC, 10 kA Breaking Capacity / 1243206 (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
5SY4440-8
from £ 115.63*
per piece
from £ 115.63*
per piece
Siemens Sentron 5SY4 MCB, 4P, 4A Curve C, 400V AC, 10 kA Breaking Capacity / 1243188 (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
5SY4404-7
from £ 65.78*
per piece
from £ 65.78*
per piece
Siemens Sentron 5SY4 MCB, 4P, 4A Curve D, 400V AC, 10 kA Breaking Capacity / 1243189 (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
5SY4404-8
from £ 92.96*
per piece
from £ 92.96*
per piece
Siemens Sentron 5SY4 MCB, 4P, 50A Curve B, 400V AC, 10 kA Breaking Capacity / 1243207 (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
5SY4450-6
from £ 78.30*
per piece
from £ 78.30*
per piece
Siemens Sentron 5SY4 MCB, 4P, 50A Curve C, 400V AC, 10 kA Breaking Capacity / 1243208 (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
5SY4450-7
from £ 99.94*
per piece
from £ 99.94*
per piece
Siemens Sentron 5SY4 MCB, 4P, 50A Curve D, 400V AC, 10 kA Breaking Capacity / 1243209 (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
5SY4450-8
from £ 138.45*
per piece
from £ 138.45*
per piece
Siemens Sentron 5SY4 MCB, 4P, 63A Curve B, 400V AC, 10 kA Breaking Capacity / 1243210 (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
5SY4463-6
from £ 90.88*
per piece
from £ 90.88*
per piece
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* Prices with asterisk are net prices excl. statutory VAT.
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