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. 781-3907
Mfr. Part No.3841 6039
BrandSocomec
€921.54
Each
units
- - 4P - - - B1, B2, B3, B4 - Yes 400 A - Shroud DIN Rail -
RS Stock No. 727-5807
Mfr. Part No.1SCA022750R6660
BrandABB
€514.19
Each
units
- - 3P - - - B1-B3 - Yes 250 A 3 Screw DIN Rail -
RS Stock No. 710-0586
Mfr. Part No.1SCA114614R1001
BrandABB
€225.21
Each
units
- - 4P - - - A2, A3, A4 - Yes 100 A 3 - DIN Rail -40°C
RS Stock No. 184-9087
Mfr. Part No.CPDB1K
BrandContactum
€20.39
Each
units
- - - - - - - - - 200 A 3 - - -
RS Stock No. 172-3017
Mfr. Part No.36153039
BrandSocomec
€1,769.57
Each
units
2NO/2NC, NO/NC - 3 FUSERBLOC - - 2, B1, B2, B3, B4 400A Yes 400 A 3 Cage DIN Rail -
RS Stock No. 608-7930
Mfr. Part No.GS1DD3
€111.10
Each
units
- - 3P - - - 10 x 38 mm - - 20 A dc, 32 A ac 3 Screw DIN Rail -
RS Stock No. 708-1744
Mfr. Part No.GS2GB3
€87.06
Each
units
- - 3P - - - A2, A3 - Yes 40 A dc, 63 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. 726-4737
Mfr. Part No.103GNC
BrandEaton
€694.86
Each
units
- - 3P + N - - - SB3, SB4, SD5, SO - - 100 A 3 Tunnel - -
RS Stock No. 179-9648
Mfr. Part No.38313016
BrandSocomec
€419.43
Each
units
3P - 3 FUSERBLOC - - - 160A Yes 160 A - - DIN Rail -
RS Stock No. 813-9563
Mfr. Part No.GS2GU3N
€237.66
Each
units
- - 3 - - - J 100kA Yes 60 A 3 Cable DIN Rail -
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. 762-2610
Mfr. Part No.1SCA115877R1001
BrandABB
€314.53
Each
units
- - 4P - - - 00, 000 160A Yes 125 A 3 - DIN Rail -
RS Stock No. 182-8454
Mfr. Part No.36153024
BrandSocomec
€1,219.41
Each
units
- - - - - - - - - - - - - -
RS Stock No. 781-3806
Mfr. Part No.3631 3004
BrandSocomec
€96.33
Each
units
- - 3P - - - 14 x 51 mm - Yes 32 A - Shroud DIN Rail -
RS Stock No. 727-5838
Mfr. Part No.1SCA022719R0840
BrandABB
€734.15
Each
units
- - 3P - - - B1-B4 - Yes 400 A 3 Screw DIN Rail -
RS Stock No. 762-2461
Mfr. Part No.OS125TPN-B
BrandABB
€806.26
Each
units
- - 3P + N - - - A2, A3 - - 125 A 3 - Wall Mount -
RS Stock No. 819-983
Mfr. Part No.60KXSC2F
BrandEaton
€318.35
Each
units
- - SP - - - - - - 63 A 1 - - -
RS Stock No. 781-3853
Mfr. Part No.3831 6015
BrandSocomec
€360.28
Each
units
- - 4P - - - 00 - Yes 160 A - Shroud DIN Rail -
RS Stock No. 781-3831
Mfr. Part No.3831 6010
BrandSocomec
€226.17
Each
units
- - 4P - - - 22 x 58 mm - Yes 100 A - Shroud DIN Rail -
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