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. 781-3878
Mfr. Part No.3641 4001
BrandSocomec
€85.71
Each
units
- - 3P + N - - - A1 - Yes 32 A - Shroud DIN Rail -
RS Stock No. 781-3828
Mfr. Part No.3831 6006
BrandSocomec
€172.60
Each
units
- - 4P - - - 00C - Yes 63 A - Shroud DIN Rail -
RS Stock No. 727-5807
Mfr. Part No.1SCA022750R6660
BrandABB
€514.19
Each
units
- - 3P - - - B1-B3 - Yes 250 A 3 Screw DIN Rail -
RS Stock No. 781-3907
Mfr. Part No.3841 6039
BrandSocomec
€921.54
Each
units
- - 4P - - - B1, B2, B3, B4 - Yes 400 A - Shroud DIN Rail -
RS Stock No. 707-6177
Mfr. Part No.2CSM204703R1801
BrandABB
€21.52
Each
units
- - DP - - - 10 x 38 mm - - 32 A 1 - - -
RS Stock No. 726-4911
Mfr. Part No.63GNC
BrandEaton
€505.71
Each
units
- - 3P + N - - - SB3, SB4 - - 63 A 3 Tunnel - -
RS Stock No. 726-4731
Mfr. Part No.103GNL
BrandEaton
€785.14
Each
units
- - 3P + N - - - SB3, SB4, SD5, SO - - 100 A 3 Tunnel - -
RS Stock No. 781-3856
Mfr. Part No.3831 3024
BrandSocomec
€473.49
Each
units
- - 3P - - - 1 mm - Yes 250 A - Shroud DIN Rail -
RS Stock No. 676-3215
Mfr. Part No.GS2K3
€285.69
Each
units
- - 3P - - - 22 x 58 mm - Yes 100 A dc, 125 A ac 3 - DIN rail -20°C
RS Stock No. 608-7946
Mfr. Part No.GS1DD4
€137.36
Each
units
- - 4P - - - 10 x 38 mm - - 20 A dc, 32 A ac 3 Screw DIN Rail -
RS Stock No. 781-3884
Mfr. Part No.3841 6010
BrandSocomec
€226.17
Each
units
- - 4P - - - A4 - Yes 100 A - Shroud DIN Rail -
RS Stock No. 238-4827
Mfr. Part No.0 058 21
BrandLegrand
€14.39
Each
units
- - SP + N - - - 10.3 x 25.8 mm - - 16 A 1 Cage DIN rail -5°C
RS Stock No. 762-2610
Mfr. Part No.1SCA115877R1001
BrandABB
€314.53
Each
units
- - 4P - - - 00, 000 160A Yes 125 A 3 - DIN Rail -
RS Stock No. 238-4833
Mfr. Part No.0 058 22
BrandLegrand
€17.68
Each
units
- - SP + N - - - 8.5 x 31.5 mm - - 20 A 1 Cage DIN rail -5°C
RS Stock No. 179-9647
Mfr. Part No.36153010
BrandSocomec
€249.43
Each
units
3P - 3 FUSERBLOC - - 22 x 58 mm 100A Yes 100 A - - DIN Rail -
RS Stock No. 534-5112
Mfr. Part No.MGFA0201C
€137.13
Each
units
- - SP + N - - - A1, A2, NITD20 - - 20 A - - - -
RS Stock No. 708-1772
Mfr. Part No.GS2NB4
€409.42
Each
units
- - 4P - - - B1, B2, B3 - Yes 200 A dc, 250 A ac 3 Wire Lead DIN Rail -20°C
RS Stock No. 762-2613
Mfr. Part No.1SCA115209R1001
BrandABB
€251.45
Each
units
- - 4P - - - 000 80A Yes 63 A 3 - DIN Rail -
RS Stock No. 182-8454
Mfr. Part No.36153024
BrandSocomec
€1,219.41
Each
units
- - - - - - - - - - - - - -
RS Stock No. 676-3227
Mfr. Part No.GS2L3
€374.04
Each
units
- - 3P - - - 0 - Yes 125 A dc, 160 A ac 3 - DIN rail -20°C
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