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.


...
Read more Read less

Filters

Viewing 41 - 60 of 469 products
Results per page
Description Price 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
New
RS Stock No. 218-3192
Mfr. Part No.3KD3242-2NE10-0
BrandSiemens
TWD8,908.00
Each
units
- Fused 4 SENTRON 3KD3 - - - - - 125A - - -
New
RS Stock No. 218-3167
Mfr. Part No.3KD2640-2ME20-0
BrandSiemens
TWD3,659.00
Each
units
- Fused 4 SENTRON 3KD2 - - - - - 63A - - -
New
RS Stock No. 218-3218
Mfr. Part No.3KD4230-0PE10-0
BrandSiemens
TWD16,538.00
Each
units
- Fused 3 SENTRON 3KD4 - - - - - 4000A - - -
New
RS Stock No. 213-1368
Mfr. Part No.3NP1133-1CA20
BrandSiemens
TWD1,904.00
Each
units
- Fused 3 SENTRON 3NP11 - - NH00, NH000 - - 160A - - -
New
RS Stock No. 218-3293
Mfr. Part No.3LD2030-1TL13
BrandSiemens
TWD1,402.00
Each
units
- Fused 4 SENTRON 3LD - - - - - 16A - - -
RS Stock No. 762-2468
Mfr. Part No.OS200TPN-A OS200TPN-A
BrandABB
TWD41,966.00
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 212-5815
Mfr. Part No.3LD3340-0TL11
BrandSiemens
TWD3,074.00
Each
units
- - 4 SENTRON 3LD3 Single Throw Enclosed - 40A - 40A - - -
New
RS Stock No. 218-3272
Mfr. Part No.3KF3325-0MF11-8AA1
BrandSiemens
TWD16,259.00
Each
units
- Fused 3 SENTRON 3KF - - NH0, NH1 - - 250A - - -
New
RS Stock No. 212-5794
Mfr. Part No.3LD2545-0TK53
BrandSiemens
TWD3,567.00
Each
units
3P - 3 SENTRON 3LD Single Throw Enclosed Size 3 63A - 63A - - -
RS Stock No. 179-9647
Mfr. Part No.36153010
BrandSocomec
TWD7,092.00
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 219-8309
Mfr. Part No.DF221
TWD752.20
Each (In a Pack of 6)
units
- Fused 1 TeSys DF22 - - 22 x 58mm 125A - - - - -
RS Stock No. 203-9643
Mfr. Part No.5SG7113
BrandSiemens
TWD1,443.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 781-3822
Mfr. Part No.3831 3010
BrandSocomec
TWD7,313.00
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 218-3285
Mfr. Part No.3KF5463-0MF11
BrandSiemens
TWD62,718.00
Each
units
- Fused 4 SENTRON 3KF - - NH2, NH3 - - 630A - - -
RS Stock No. 727-2362
Mfr. Part No.2CMA142417R1000 BWS 316 TPN
BrandABB
TWD1,940.00
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 212-5806
Mfr. Part No.3LD3230-0TK11
BrandSiemens
TWD1,214.00
Each
units
3P - 3 SENTRON 3LD3 Single Throw Enclosed - 32A - 32A - - -
New
RS Stock No. 218-3300
Mfr. Part No.3LD2203-3VK53
BrandSiemens
TWD2,792.00
Each
units
- Fused 6 SENTRON 3LD - - - - - 32A - - -
RS Stock No. 707-6168
Mfr. Part No.2CSM204713R1801 E 91/32 PV
BrandABB
TWD317.00
Each
units
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
New
RS Stock No. 218-3280
Mfr. Part No.3KF5363-2LF11
BrandSiemens
TWD53,530.00
Each
units
- Fused 3 SENTRON 3KF - - NH2, NH3 - - 630A - - -
RS Stock No. 686-7385
Mfr. Part No.OS20FB12A1 1SCA108790R1001
BrandABB
TWD3,448.00
Each
units
- - 3P - - - - A1 - Yes 20 A - Screw DIN Rail