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. 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. 686-7391
Mfr. Part No.1SCA108853R1001
BrandABB
SGD198.17
Each
units
- - 4P - - - A1 - Yes 32 A 3 Screw DIN Rail -
RS Stock No. 781-3816
Mfr. Part No.3831 6005
BrandSocomec
SGD209.33
Each
units
- - 4P - - - 14 x 51 mm - Yes 50 A - Shroud DIN Rail -
RS Stock No. 184-9085
Mfr. Part No.CPD1253K
BrandContactum
SGD33.43
Each
units
- - - - - - - - - 125 A 3 - - -
RS Stock No. 708-1750
Mfr. Part No.GS2JB4
SGD380.74
Each
units
- - 4P - - - A4 - Yes 100 A dc, 100 A ac 3 Wire Lead DIN Rail -20°C
RS Stock No. 534-5112
Mfr. Part No.MGFA0201C
SGD248.48
Each
units
- - SP + N - - - A1, A2, NITD20 - - 20 A - - - -
RS Stock No. 608-7586
Mfr. Part No.GK1EX
SGD314.28
Each
units
- - 3P + N - - - 14 x 51 mm - Yes 50 A 1 Wire Lead DIN Rail -50°C
RS Stock No. 708-1769
Mfr. Part No.GS2LB3
SGD456.89
Each
units
- - 3P - - - B1, B2 - Yes 125 A dc, 160 A ac 3 Wire Lead DIN Rail -20°C
New
RS Stock No. 201-0754
Mfr. Part No.CPD1254
BrandContactum
SGD32.66
Each
units
Closed Fused 4 Incomer CPD - - 125A - 125 A - - - -
RS Stock No. 676-3215
Mfr. Part No.GS2K3
SGD435.99
Each
units
- - 3P - - - 22 x 58 mm - Yes 100 A dc, 125 A ac 3 - DIN rail -20°C
RS Stock No. 727-2372
Mfr. Part No.2CMA142422R1000
BrandABB
SGD204.64
Each
units
NO - 6P - - - - 50A Yes 25 A - Cable - -
RS Stock No. 608-7592
Mfr. Part No.GK1EY
SGD240.56
Each
units
- - 4P - - - 14 x 51 mm - Yes 50 A 1 Wire Lead DIN Rail -50°C
RS Stock No. 781-3796
Mfr. Part No.3631 5002
BrandSocomec
SGD135.94
Each
units
- - 3P + N - - - 10 x 38 mm - Yes 25 A - Shroud DIN Rail -
RS Stock No. 534-5178
Mfr. Part No.MGFA1003C
SGD1,342.61
Each
units
- - 3P + N - - - A2, A3, A4, CEO100 - - 100 A - - - -
RS Stock No. 513-5690
Mfr. Part No.3841 3006
BrandSocomec
SGD156.60
Each
units
- - 3P - - - - 10A - 63 A 3 - - -
RS Stock No. 781-3828
Mfr. Part No.3831 6006
BrandSocomec
SGD266.06
Each
units
- - 4P - - - 00C - Yes 63 A - Shroud DIN Rail -
RS Stock No. 762-2455
Mfr. Part No.OS32TPN-B
BrandABB
SGD445.37
Each
units
- - 3P + N - - - A2 - - 32 A 3 - Wall Mount -
RS Stock No. 608-8006
Mfr. Part No.GS1JD3
SGD649.90
Each
units
- - 3P - - - 22 x 58 mm - Yes 100 A ac, 100 A dc 3 Screw DIN Rail -
RS Stock No. 781-3838
Mfr. Part No.3831 6011
BrandSocomec
SGD495.24
Each
units
- - 4P - - - 22 x 58 mm - Yes 125 A - Shroud DIN Rail -
RS Stock No. 819-983
Mfr. Part No.60KXSC2F
BrandEaton
SGD544.78
Each
units
- - SP - - - - - - 63 A 1 - - -
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