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  MCBs (3,221 items)

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Siemens SENTRON 5SY4 MCB, 3P+N, 3A Curve D / 2164057 (2 offers) 
The miniature circuit breaker provides voltage of 400 V with 3+N-pole configuration. In the event of an overload or short-circuit, circuit breakers safely cut off the connected circuit and reliably...
Siemens
5SY4603-8
from £ 84.40*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 40A Curve B, 400V AC, 72V DC, 5 kA Breaking Capacity / 2128955 (2 offers) 
The Siemens 5SY4 series 3+N-pole miniature circuit breaker has a current rating of 40 A and 10 kA breaking capacity. The miniature circuit breaker is the fuse for short-circuit protection. Siemens ...
Siemens
5SY4640-6
from £ 60.26*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 40A Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity / 2096670 (2 offers) 
The Siemens SENTRON series miniature circuit breaker has a 3P+N pole and has a current breaking capacity of 10kA. In the event of an overload or short-circuit this miniature circuit breakers safely...
Siemens
5SY4640-7
from £ 74.61*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 40A Curve D, 400V AC, 72V DC, 5 kA Breaking Capacity / 2128850 (2 offers) 
The miniature circuit breaker provides voltage of 400 V with 3+N-pole configuration. In the event of an overload or short-circuit, circuit breakers safely cut off the connected circuit and reliably...
Siemens
5SY4640-8
from £ 104.44*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 4A Curve C / 2164784 (2 offers) 
The Siemens 5SY4604-7 Miniature Circuit Breakers operate at 72 V DC and 4 A at AC. It has switching capacity of 10 kA according to EN 60898. These are ideal for application in large non-residential...
Siemens
5SY4604-7
from £ 61.43*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 4A Curve D / 2164058 (2 offers) 
The miniature circuit breaker provides voltage of 400 V with 3+N-pole configuration. In the event of an overload or short-circuit, circuit breakers safely cut off the connected circuit and reliably...
Siemens
5SY4604-8
from £ 85.83*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 500mA Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity / 2128886 (2 offers) 
The Siemens SENTRON series miniature circuit breaker has a 3P+N pole and has a current breaking capacity of 10kA. In the event of an overload or short-circuit this miniature circuit breakers safely...
Siemens
5SY4605-7
from £ 60.53*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 500mA Curve D, 400V AC, 72V DC, 5 kA Breaking Capacity / 2128844 (2 offers) 
The miniature circuit breaker provides voltage of 400 V with 3+N-pole configuration. In the event of an overload or short-circuit, circuit breakers safely cut off the connected circuit and reliably...
Siemens
5SY4605-8
from £ 86.49*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 50A Curve B, 400V AC, 72V DC, 5 kA Breaking Capacity / 2129013 (2 offers) 
The Siemens 5S series Miniature Circuit Breaker is used as a fuse for short-circuit protection. Siemens offers a comprehensive portfolio of protection, switching, measuring and monitoring devices, ...
Siemens
5SY4650-6
from £ 74.54*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 50A Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity / 2097518 (2 offers) 
The Siemens 5SY4 series 3+N-pole miniature circuit breaker has a current rating of 50 A and 10 kA breaking capacity. The miniature circuit breaker is the fuse for short-circuit protection. Siemens ...
Siemens
5SY4650-7
from £ 91.50*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 50A Curve D, 400V AC, 72V DC, 5 kA Breaking Capacity / 2128851 (2 offers) 
The miniature circuit breaker provides voltage of 400 V with 3+N-pole configuration. In the event of an overload or short-circuit, circuit breakers safely cut off the connected circuit and reliably...
Siemens
5SY4650-8
from £ 126.60*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 63A Curve B / 2166018 (2 offers) 
The Siemens 5S series Miniature Circuit Breaker is used as a fuse for short-circuit protection. Siemens offers a comprehensive portfolio of protection, switching, measuring and monitoring devices, ...
Siemens
5SY4663-6
from £ 84.13*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 63A Curve D / 2164059 (2 offers) 
The miniature circuit breaker provides voltage of 400 V with 3+N-pole configuration. In the event of an overload or short-circuit, circuit breakers safely cut off the connected circuit and reliably...
Siemens
5SY4663-8
from £ 150.37*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 6A Curve B, 400V AC, 72V DC, 5 kA Breaking Capacity / 2103402 (2 offers) 
The Siemens 5S series Miniature Circuit Breaker is used as a fuse for short-circuit protection. Siemens offers a comprehensive portfolio of protection, switching, measuring and monitoring devices, ...
Siemens
5SY4606-6
from £ 47.51*
per piece
 
 piece
Siemens SENTRON 5SY4 MCB, 3P+N, 6A Curve C / 2164334 (2 offers) 
The Siemens 5SY4 series 3+N-pole miniature circuit breaker has a current rating of 6 A and 10 kA breaking capacity. The miniature circuit breaker is the fuse for short-circuit protection. Siemens o...
Siemens
5SY4606-7
from £ 61.07*
per piece
 
 piece
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* Prices with asterisk are net prices excl. statutory VAT.
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