Isolator & Switch Disconnectors

Fused switches are devices used to ensure that a circuit is completely powered down in order for it to be serviced or maintained. They isolate a given part of the circuit by cutting off its electrical supply, making it safe for service or maintenance. You can find out more in our complete guide to isolators and switch disconnectors.

Fused switches contain multiple fuses inside the same enclosure so that it is easy to select and isolate a particular part of the circuit. For example, an isolator switch can be used in a substation to physically disconnect any circuit when repairs are being carried out.

What are fused switches used for?

Fused switches protect workers performing maintenance on part of an electrical circuit as well as preventing damage to the circuit itself. The advantage of using a fused switch over a non-fused switch is that it can provide a higher level of safety compared with unfused disconnectors, as the fuse blows in the event of breaches such as short circuits or overcurrent. This makes it certain that that part of the circuit cannot have current flowing through it while being worked on.

Types of fused switches

Fused switches mainly differ depending on the type of fuses they house, the number of poles they have, and the terminal type.


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Omschrijving Prijs Normal State Configuration Fused/Non-Fused Number of Poles Range Series Throw Configuration Enclosed/Not Enclosed Mechanical Fuse Size Fuse Current Rating Auxiliary Contacts Available Maximum Current Electrical Phase Terminal Type Mounting Type
Nieuw
RS-stocknr. 212-5733
Fabrikantnummer3KD4032-0PE10-0
FabrikantSiemens
€ 389,00
Each
Aantal stuks
3P Fused 3 SENTRON 3KD Single Throw Enclosed Size 3 315A - 315A - - -
Nieuw
RS-stocknr. 213-1378
Fabrikantnummer3LD2244-0TK53
FabrikantSiemens
€ 66,40
Each
Aantal stuks
3P Non-fused 3 SENTRON 3LD Single Throw Enclosed Size 2 32A - 32A - - -
Nieuw
RS-stocknr. 218-3252
Fabrikantnummer3KF1306-2LB11
FabrikantSiemens
€ 237,00
Each
Aantal stuks
- Fused 3 SENTRON 3KF - - NH00, NH000 - - 63A - - -
Nieuw
RS-stocknr. 212-5721
Fabrikantnummer3KD3032-0NE10-0
FabrikantSiemens
€ 146,00
Each
Aantal stuks
3P Fused 3 SENTRON 3KD Single Throw Enclosed Size 2 100A - 100A - - -
Nieuw
RS-stocknr. 216-5960
Fabrikantnummer3NP1143-1BC10
FabrikantSiemens
€ 192,00
Each
Aantal stuks
- Fused 3 SENTRON 3NP11 - - NH0, NH1 - - 250A - - -
Nieuw
RS-stocknr. 212-5792
Fabrikantnummer3LD2530-0TK13
FabrikantSiemens
€ 56,40
Each
Aantal stuks
3P - 3 SENTRON 3LD Single Throw Enclosed Size 3 63A - 63A - - -
RS-stocknr. 179-9648
Fabrikantnummer38313016
FabrikantSocomec
€ 404,51
Each
Aantal stuks
- - - - - - - - - - - - - -
Nieuw
RS-stocknr. 212-5720
Fabrikantnummer3KD3030-2NE10-0
FabrikantSiemens
€ 123,00
Each
Aantal stuks
3P Fused 3 SENTRON 3KD Single Throw Enclosed Size 2 100A - 100A - - -
Nieuw
RS-stocknr. 212-5791
Fabrikantnummer3LD2530-0TK11
FabrikantSiemens
€ 56,40
Each
Aantal stuks
3P - 3 SENTRON 3LD Single Throw Enclosed Size 3 63A - 63A - - -
Nieuw
RS-stocknr. 212-5764
Fabrikantnummer3KF4340-2LF11
FabrikantSiemens
€ 720,00
Each
Aantal stuks
3P Fused 3 SENTRON 3KD Single Throw Enclosed Size 4 400A - 400A - - -
RS-stocknr. 676-3233
FabrikantnummerGS2S3
€ 1.135,47
Each
Aantal stuks
- - - - - - - - - - - - - -
Nieuw
RS-stocknr. 212-5762
Fabrikantnummer3KF3325-2LF11
FabrikantSiemens
€ 463,00
Each
Aantal stuks
3P Fused 3 SENTRON 3KD Single Throw Enclosed Size 3 250A - 250A - - -
Nieuw
RS-stocknr. 213-1377
Fabrikantnummer3LD2130-0TK13
FabrikantSiemens
€ 30,00
Each
Aantal stuks
3P Non-fused 3 SENTRON 3LD Single Throw Enclosed Size 2 25A - 25A - - -
Nieuw
RS-stocknr. 216-5959
Fabrikantnummer3NP1133-1BC20
FabrikantSiemens
€ 64,10
Each
Aantal stuks
- Fused 3 SENTRON 3NP11 - - NH00, NH000 - - 160A - - -
RS-stocknr. 2509646450
FabrikantnummerKKVM332CC Y/R
FabrikantAltech
€ 166,27
Each
Aantal stuks
- - - - - - - - - - - - - -