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
RS-stocknr. 518-7130
Fabrikantnummer3LD2250-0TK13
FabrikantSiemens
38,25 €
Each
Aantal stuks
- - - - - - - - 10A - 32 A - - Panel Mount
Nieuw
RS-stocknr. 218-3217
Fabrikantnummer3KD4042-0PE10-0
FabrikantSiemens
475,00 €
Each
Aantal stuks
- Fused 4 SENTRON 3KD4 - - - - - 315A - - -
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. 218-3172
Fabrikantnummer3KD2840-2NE10-0
FabrikantSiemens
113,00 €
Each
Aantal stuks
- Fused 4 SENTRON 3KD2 - - - - - 80A - - -
Nieuw
RS-stocknr. 218-3218
Fabrikantnummer3KD4230-0PE10-0
FabrikantSiemens
414,00 €
Each
Aantal stuks
- Fused 3 SENTRON 3KD4 - - - - - 4000A - - -
Nieuw
RS-stocknr. 218-3310
Fabrikantnummer3NP5060-0CA00
FabrikantSiemens
241,00 €
Each
Aantal stuks
- Fused 3 SENTRON 3NP506 - - NH00, NH000 - - 160A - - -
Nieuw
RS-stocknr. 212-5815
Fabrikantnummer3LD3340-0TL11
FabrikantSiemens
76,70 €
Each
Aantal stuks
- - 4 SENTRON 3LD3 Single Throw Enclosed - 40A - 40A - - -
Nieuw
RS-stocknr. 218-3248
Fabrikantnummer3KF1303-0LB51
FabrikantSiemens
201,00 €
Each
Aantal stuks
- Fused 3 SITOR 3KF - - NH00, NH000 - - 32A - - -
Nieuw
RS-stocknr. 218-3193
Fabrikantnummer3KD3260-0NE20-0
FabrikantSiemens
734,00 €
Each
Aantal stuks
- Fused 6 SENTRON 3KD3 - - - - - 125A - - -
Nieuw
RS-stocknr. 218-3173
Fabrikantnummer3KD2840-2NE20-0
FabrikantSiemens
113,00 €
Each
Aantal stuks
- Fused 4 SENTRON 3KD2 - - - - - 80A - - -
RS-stocknr. 203-9645
Fabrikantnummer5SG7163
FabrikantSiemens
93,90 €
Each
Aantal stuks
- - - - - - - - - - - - - -
Nieuw
RS-stocknr. 218-3159
Fabrikantnummer3KD1640-2ME10-0
FabrikantSiemens
74,20 €
Each
Aantal stuks
- Fused 4 SENTRON 3KD1 - - - - - 16A - - -
Nieuw
RS-stocknr. 212-5816
Fabrikantnummer3LD3350-0TL11
FabrikantSiemens
59,10 €
Each
Aantal stuks
- - 4 SENTRON 3LD3 Single Throw Enclosed - 40A - 40A - - -
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. 218-3279
Fabrikantnummer3KF5363-0MF11
FabrikantSiemens
1.260,00 €
Each
Aantal stuks
- Fused 3 SENTRON 3KF - - NH2, NH3 - - 630A - - -
Nieuw
RS-stocknr. 218-3249
Fabrikantnummer3KF1303-0MB11
FabrikantSiemens
156,00 €
Each
Aantal stuks
- Fused 3 SENTRON 3KF - - NH00, NH000 - - 32A - - -
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. 212-5807
Fabrikantnummer3LD3230-0TL11
FabrikantSiemens
40,00 €
Each
Aantal stuks
- - 4 SENTRON 3LD3 Single Throw Enclosed - 32A - 32A - - -
Nieuw
RS-stocknr. 212-5738
Fabrikantnummer3KD5030-0RE10-0
FabrikantSiemens
1.710,00 €
Each
Aantal stuks
3P Fused 3 SENTRON 3KD Single Throw Enclosed Size 5 1000A - 1000A - - -
Nieuw
RS-stocknr. 218-3238
Fabrikantnummer3KD5430-0RE10-0
FabrikantSiemens
3.030,00 €
Each
Aantal stuks
- Fused 3 SENTRON 3KD4 - - - - - 1600A - - -