Isolator & Switch Disconnectors

Fused switch disconnectors 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.

Fused switch disconnectors 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 switch disconnectors used for?

Fused switch disconnectors 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 disconnector over a non-fused switch disconnector one 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 switch disconnectors

Fused switch disconnectors 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. 686-7391
Mfr. Part No.1SCA108853R1001
BrandABB
SGD198.17
Each
units
- - 4P - - - - A1 - Yes 32 A 3 Screw DIN Rail
RS Stock No. 443-839
Mfr. Part No.DTL160KIT
SGD131.32
Each
units
- - 3P - - - - C00/00, NH 160A - 160 A 3 - Surface Mount
RS Stock No. 762-2641
Mfr. Part No.1SCA022719R0250
BrandABB
SGD1,196.93
Each
units
- - 3P - - - - 0 → 2 500A Yes 400 A 3 - DIN Rail
RS Stock No. 781-3888
Mfr. Part No.3841 6016
BrandSocomec
SGD468.90
Each
units
- - 4P - - - - B1, B2 - Yes 160 A - Shroud DIN Rail
RS Stock No. 710-0602
Mfr. Part No.1SCA115896R1001
BrandABB
SGD626.12
Each
units
- - 4P - - - - A2, A3, A4 - Yes 160 A 3 - DIN Rail
RS Stock No. 512-9471
Mfr. Part No.OS125B12
BrandABB
SGD489.75
Each
units
- - 3P - - - - A2, A3, A4 - Yes 125 A - Screw DIN Rail
RS Stock No. 710-0586
Mfr. Part No.1SCA114614R1001
BrandABB
SGD394.60
Each
units
- - 4P - - - - A2, A3, A4 - Yes 100 A 3 - DIN Rail
RS Stock No. 781-3897
Mfr. Part No.38416021
BrandSocomec
SGD567.40
Each
units
- - 4P - - - - B1, B2 - Yes 200 A - Shroud DIN Rail
RS Stock No. 608-7968
Mfr. Part No.GS1FD3
SGD446.20
Each
units
- - 3P - - - - 14 x 51 mm - Yes 40 A dc, 50 A ac 3 Screw DIN Rail
RS Stock No. 762-2616
Mfr. Part No.1SCA115639R1001
BrandABB
SGD432.68
Each
units
- - 3P - - - - 00, 000 160A Yes 125 A 3 - DIN Rail
RS Stock No. 513-5735
Mfr. Part No.3841 3024
BrandSocomec
SGD496.04
Each
units
- - 3P - - - - - 10A - 250 A 3 - -
RS Stock No. 710-0595
Mfr. Part No.1SCA115634R1001
BrandABB
SGD432.68
Each
units
- - 3P - - - - A2, A3, A4 - Yes 125 A 3 - DIN Rail
RS Stock No. 398-5257
Mfr. Part No.AAE003-251/029
BrandEICHOFF
SGD12.28
Each
units
- - - - - - - - - - - - - Panel Mount
RS Stock No. 608-7946
Mfr. Part No.GS1DD4
SGD380.24
Each
units
- - 4P - - - - 10 x 38 mm - - 20 A dc, 32 A ac 3 Screw DIN Rail
RS Stock No. 762-2613
Mfr. Part No.1SCA115209R1001
BrandABB
SGD430.30
Each
units
- - 4P - - - - 000 80A Yes 63 A 3 - DIN Rail
RS Stock No. 708-1753
Mfr. Part No.GS2GB4
SGD270.53
Each
units
- - 4P - - - - A2, A3 - Yes 40 A dc, 63 A ac 3 Wire Lead DIN Rail
RS Stock No. 676-3221
Mfr. Part No.GS2N3
SGD922.25
Each
units
- - 3P - - - - 1 - Yes 200 A dc, 250 A ac 3 - DIN rail
RS Stock No. 513-5707
Mfr. Part No.3841 3010
BrandSocomec
SGD179.40
Each
units
- - 3P - - - - - 10A - 100 A 3 - -
RS Stock No. 781-3850
Mfr. Part No.3831 6024
BrandSocomec
SGD958.82
Each
units
- - 4P - - - - 1 mm - Yes 250 A - Shroud DIN Rail
RS Stock No. 727-2366
Mfr. Part No.2CMA142426R1000
BrandABB
SGD85.29
Each
units
NO - 3P - - - - - 50A Yes 25 A - Cable -
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