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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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
RS Stock No. 513-5707
Mfr. Part No.3841 3010
BrandSocomec
SGD194.08
Each
units
- - 3P - - - - - 10A - 100 A 3 - -
RS Stock No. 781-3897
Mfr. Part No.38416021
BrandSocomec
SGD613.83
Each
units
- - - - - - - - - - - - - -
RS Stock No. 762-2641
Mfr. Part No.OS400D03P 1SCA022719R0250
BrandABB
SGD1,104.66
Each
units
- - - - - - - - - - - - - -
RS Stock No. 398-5257
Mfr. Part No.AAE003-251/029
BrandEICHOFF
SGD20.52
Each
units
- - - - - - - - - - - - - Panel Mount
RS Stock No. 608-7968
Mfr. Part No.GS1FD3
SGD476.98
Each
units
- - - - - - - - - - - - - -
RS Stock No. 708-1753
Mfr. Part No.GS2GB4
SGD290.68
Each
units
- - 4P - - - - A2, A3 - Yes - 3 Wire Lead -
RS Stock No. 781-3850
Mfr. Part No.3831 6024
BrandSocomec
SGD1,037.29
Each
units
- - - - - - - - - - - - - -
RS Stock No. 608-7946
Mfr. Part No.GS1DD4
SGD415.87
Each
units
- - - - - - - - - - - - - -
RS Stock No. 512-9471
Mfr. Part No.OS125GB12P 1SCA114603R1001
BrandABB
SGD518.56
Each
units
- - 3P - - - - A2, A3, A4 - Yes 125 A - Screw DIN Rail
RS Stock No. 513-5735
Mfr. Part No.3841 3024
BrandSocomec
SGD536.63
Each
units
- - 3P - - - - - 10A - 250 A 3 - -
RS Stock No. 710-0586
Mfr. Part No.OS100GB04N1P 1SCA114614R1001
BrandABB
SGD363.03
Each
units
- - 4P - - - - A2, A3, A4 - Yes 100 A 3 - DIN Rail
RS Stock No. 686-7391
Mfr. Part No.OS32FB22A1N1 1SCA108853R1001
BrandABB
SGD209.82
Each
units
- - 4P - - - - A1 - Yes 32 A 3 Screw DIN Rail
RS Stock No. 710-0602
Mfr. Part No.OS160GB04N1P 1SCA115896R1001
BrandABB
SGD662.95
Each
units
- - 4P - - - - A2, A3, A4 - Yes 160 A 3 - DIN Rail
RS Stock No. 676-3221
Mfr. Part No.GS2N3
SGD995.44
Each
units
- - - - - - - - - - - - - -
RS Stock No. 727-2366
Mfr. Part No.2CMA142426R1000 BWS 325Y TPN
BrandABB
SGD90.30
Each
units
- - - - - - - - - - - - - -
RS Stock No. 710-0595
Mfr. Part No.OS125GB03P 1SCA115634R1001
BrandABB
SGD458.13
Each
units
- - 3P - - - - A2, A3, A4 - Yes 125 A 3 - DIN Rail
RS Stock No. 762-2616
Mfr. Part No.OS125GD03P 1SCA115639R1001
BrandABB
SGD399.33
Each
units
- - - - - - - - - - - - - -
RS Stock No. 443-839
Mfr. Part No.DTL160KIT
SGD144.18
Each
units
- - - - - - - - - - - - - -
RS Stock No. 762-2613
Mfr. Part No.OS63GD04N2P 1SCA115209R1001
BrandABB
SGD397.11
Each
units
- - - - - - - - - - - - - -
RS Stock No. 781-3838
Mfr. Part No.3831 6011
BrandSocomec
SGD427.38
Each
units
- - - - - - - - - - - - - -