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 Number of Poles Range Series Throw Configuration Mechanical Fuse Size Fuse Current Rating Auxiliary Contacts Available Maximum Current Electrical Phase Terminal Type Mounting Type Minimum Operating Temperature Maximum Operating Temperature
RS Stock No. 708-1744
Mfr. Part No.GS2GB3
kr 1 457,43
Each
Units
- 3P - - - A2, A3 - Yes 40 A dc, 63 A ac 3 Wire Lead DIN Rail -20°C +70°C
RS Stock No. 238-4833
Mfr. Part No.0 058 22
BrandLegrand
kr 146,23
Each
Units
- SP + N - - - 8.5 x 31.5 mm - - 20 A 1 Cage DIN rail -5°C +40°C
RS Stock No. 710-0573
Mfr. Part No.1SCA115259R1001
BrandABB
kr 791,24
Each
Units
- 3P - - - A2, A3 - Yes 32 A 3 Screw DIN Rail - -
RS Stock No. 419-555
Mfr. Part No.5500S
kr 126,81
Each
Units
- DP - Sentry - - - - 100 A - Tunnel - -5°C +40°C
RS Stock No. 762-2648
Mfr. Part No.1SCA022825R2830
BrandABB
kr 16 492,37
Each
Units
- 3P - - - 3 800A Yes 630 A 3 - DIN Rail - -
RS Stock No. 707-6152
Mfr. Part No.2CSM204753R1801
BrandABB
kr 213,56
Each
Units
- 3P - - - 10 x 38 mm - - 32 A 3 - - - -
RS Stock No. 608-7564
Mfr. Part No.GK1ET
kr 643,62
Each
Units
- 4P - - - 14 x 51 mm - Yes 50 A - Wire Lead DIN Rail -50°C +70°C
RS Stock No. 710-0589
Mfr. Part No.1SCA115238R1001
BrandABB
kr 1 386,69
Each
Units
- 4P - - - A2, A3 - Yes 63 A 3 Screw DIN Rail - -
RS Stock No. 512-9459
Mfr. Part No.OS100GB12P
BrandABB
kr 2 002,95
Each
Units
- 3P - - - BS - Yes 100 A 3 Conduit DIN Rail - -
RS Stock No. 762-2610
Mfr. Part No.1SCA115877R1001
BrandABB
kr 4 522,39
Each
Units
- 4P - - - 00, 000 160A Yes 125 A 3 - DIN Rail - -
RS Stock No. 727-2362
Mfr. Part No.2CMA142417R1000
BrandABB
kr 637,08
Each
Units
NO 3P - - - - 50A Yes 16 A - Cable - - -
RS Stock No. 726-4737
Mfr. Part No.103GNC
BrandEaton
kr 5 208,29
Each
Units
- 3P + N - - - SB3, SB4, SD5, SO - - 100 A 3 Tunnel - - -
RS Stock No. 710-0595
Mfr. Part No.1SCA115634R1001
BrandABB
kr 1 988,06
Each
Units
- 3P - - - A2, A3, A4 - Yes 125 A 3 - DIN Rail - -
RS Stock No. 762-2613
Mfr. Part No.1SCA115209R1001
BrandABB
kr 3 490,50
Each
Units
- 4P - - - 000 80A Yes 63 A 3 - DIN Rail - -
RS Stock No. 179-9646
Mfr. Part No.36153005
BrandSocomec
kr 1 139,08
Each
Units
3P 3 FUSERBLOC - - 14 x 51 mm 50A Yes 50 A - - DIN Rail - -
RS Stock No. 762-2604
Mfr. Part No.1SCA115207R1001
BrandABB
kr 1 290,68
Each
Units
- 3P - - - 000 80A Yes 63 A 3 - DIN Rail - -
RS Stock No. 710-0598
Mfr. Part No.1SCA115901R1001
BrandABB
kr 2 339,62
Each
Units
- 4P - - - A2, A3, A4 - Yes 125 A 3 - DIN Rail - -
RS Stock No. 534-5112
Mfr. Part No.MGFA0201C
kr 703,43
Each
Units
- SP + N - - - A1, A2, NITD20 - - 20 A - - - - -
RS Stock No. 707-6177
Mfr. Part No.2CSM204703R1801
BrandABB
kr 125,62
Each
Units
- DP - - - 10 x 38 mm - - 32 A 1 - - - -
RS Stock No. 727-2366
Mfr. Part No.2CMA142426R1000
BrandABB
kr 847,95
Each
Units
NO 3P - - - - 50A Yes 25 A - Cable - - -
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