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 Mechanical Fuse Size Fuse Current Rating Auxiliary Contacts Available Maximum Current Electrical Phase Terminal Type Mounting Type Minimum Operating Temperature
RS Stock No. 708-1744
Mfr. Part No.GS2GB3
kr 1 321,92
Each
Units
- - 3P - - - A2, A3 - Yes 40 A dc, 63 A ac 3 Wire Lead DIN Rail -20°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. 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
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. 608-7564
Mfr. Part No.GK1ET
kr 1 892,16
Each
Units
- - 4P - - - 14 x 51 mm - Yes 50 A - Wire Lead DIN Rail -50°C
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. 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. 676-3209
Mfr. Part No.GS2F3
kr 1 853,28
Each
Units
- - 3P - - - 14 x 51 mm - Yes 40 A dc, 50 A ac 3 - DIN rail -20°C
RS Stock No. 781-3787
Mfr. Part No.3631 4002
BrandSocomec
kr 913,25
Each
Units
- - 3P + N - - - 10 x 38 mm - Yes 25 A - Shroud DIN Rail -
RS Stock No. 676-3215
Mfr. Part No.GS2K3
kr 2 903,04
Each
Units
- - 3P - - - 22 x 58 mm - Yes 100 A dc, 125 A ac 3 - DIN rail -20°C
RS Stock No. 534-5156
Mfr. Part No.MGFA0203C
kr 2 053,52
Each
Units
- - 3P + N - - - A1, A2, NITD20 - - 20 A - - - -
RS Stock No. 512-9471
Mfr. Part No.OS125B12
BrandABB
kr 2 828,47
Each
Units
- - 3P - - - A2, A3, A4 - Yes 125 A - Screw DIN Rail -
RS Stock No. 710-0586
Mfr. Part No.1SCA114614R1001
BrandABB
kr 1 895,46
Each
Units
- - 4P - - - A2, A3, A4 - Yes 100 A 3 - DIN Rail -40°C
RS Stock No. 727-2369
Mfr. Part No.2CMA142423R1000
BrandABB
kr 637,08
Each
Units
NO - 3P - - - - 50A Yes 16 A - Cable - -
RS Stock No. 727-5787
Mfr. Part No.1SCA022709R9330
BrandABB
kr 2 900,79
Each
Units
- - 3P - - - B1-B2 - Yes 200 A 3 Screw DIN Rail -
RS Stock No. 726-4731
Mfr. Part No.103GNL
BrandEaton
kr 8 820,06
Each
Units
- - 3P + N - - - SB3, SB4, SD5, SO - - 100 A 3 Tunnel - -
RS Stock No. 676-3221
Mfr. Part No.GS2N3
kr 6 130,08
Each
Units
- - 3P - - - 1 - Yes 200 A dc, 250 A ac 3 - DIN rail -20°C
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. 781-3856
Mfr. Part No.3831 3024
BrandSocomec
kr 4 587,00
Each
Units
- - 3P - - - 1 mm - Yes 250 A - Shroud DIN Rail -
RS Stock No. 247-4065
Mfr. Part No.DTL400KIT
kr 3 106,60
Each
Units
- - 3P - - - NH02 - - 400 A 3 - Surface Mount -
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