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. 136-5277
BrandRS PRO
SGD298.24
Each
units
6NO - 6 - - 6PST - - - - 63A 3 - Wall Mount
RS Stock No. 781-3872
Mfr. Part No.3841 6003
BrandSocomec
SGD123.41
Each
units
- - - - - - - - - - - - - -
RS Stock No. 819-977
Mfr. Part No.30KXTNC2F
BrandEaton
SGD579.85
Each
units
- Fused 3P - Exel 2 3P Enclosed - - - 32A 3 Screw Surface Mount
RS Stock No. 535-0912
Mfr. Part No.MGFA0633C
SGD899.81
Each
units
- - - - - - - - - - - - - -
RS Stock No. 726-4917
Mfr. Part No.60KXTNC2F
BrandEaton
SGD1,043.27
Each
units
- Fused 3P + N - Exel 2 3P Enclosed SB4 - - 63A 3 Screw Surface Mount
RS Stock No. 707-6146
Mfr. Part No.2CSM200923R1801 E 91/32
BrandABB
SGD8.89
Each
units
- - - - - - - - - - - - - -
RS Stock No. 762-2610
Mfr. Part No.OS125GD04N2P 1SCA115877R1001
BrandABB
SGD583.66
Each
units
- - - - - - - - - - - - - -
RS Stock No. 762-2604
Mfr. Part No.OS63GD03P 1SCA115207R1001
BrandABB
SGD235.49
Each
units
- - - - - - - - - - - - - -
RS Stock No. 676-3227
Mfr. Part No.GS2L3
SGD645.90
Each
units
- - - - - - - - - - - - - -
RS Stock No. 513-5729
Mfr. Part No.3841 3021
BrandSocomec
SGD406.05
Each
units
- - 3P - - - - B1-B2 200A - 200 A 3 - -
RS Stock No. 247-4065
Mfr. Part No.DTL400KIT
SGD597.47
Each
units
- - - - - - - - - - - - - -
RS Stock No. 676-3233
Mfr. Part No.GS2S3
SGD2,264.01
Each
units
- - - - - - - - - - - - - -
RS Stock No. 813-9563
Mfr. Part No.GS2GU3N
SGD795.76
Each
units
- - - - - - - - - - - - - -
RS Stock No. 710-0589
Mfr. Part No.OS63GB04N1P 1SCA115238R1001
BrandABB
SGD343.30
Each
units
- - 4P - - - - A2, A3 - Yes 63 A 3 Screw DIN Rail
RS Stock No. 781-3894
Mfr. Part No.3841 3032
BrandSocomec
SGD760.65
Each
units
- - - - - - - - - - - - - -
RS Stock No. 781-3799
Mfr. Part No.3631 3003
BrandSocomec
SGD174.87
Each
units
- - - - - - - - - - - - - -
RS Stock No. 707-6168
Mfr. Part No.2CSM204713R1801 E 91/32 PV
BrandABB
SGD16.59
Each
units
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 513-2089
Mfr. Part No.3641 3001
BrandSocomec
SGD81.78
Each
units
- - 3P - - - - A1 - Yes 32 A 3 Shroud -
RS Stock No. 398-5257
Mfr. Part No.AAE003-251/029
BrandEICHOFF
SGD20.76
Each
units
- - - - - - - - - - - - - Panel Mount
RS Stock No. 710-0586
Mfr. Part No.OS100GB04N1P 1SCA114614R1001
BrandABB
SGD455.39
Each
units
- - 4P - - - - A2, A3, A4 - Yes 100 A 3 - DIN Rail