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. 819-977
Mfr. Part No.30KXTNC2F
BrandEaton
€292.59
Each
units
- - 3P - - - - - - 32 A 3 - - -
RS Stock No. 710-0602
Mfr. Part No.1SCA115896R1001
BrandABB
€365.88
Each
units
- - 4P - - - A2, A3, A4 - Yes 160 A 3 - DIN Rail -
New
RS Stock No. 201-0754
Mfr. Part No.CPD1254
BrandContactum
€18.42
Each
units
Closed Fused 4 Incomer CPD - - 125A - 125 A - - - -
RS Stock No. 707-6168
Mfr. Part No.2CSM204713R1801
BrandABB
€10.00
Each
units
- - SP - - - 10 x 38 mm - - 32 A 1 - - -
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. 726-4813
Mfr. Part No.203GNC
BrandEaton
€1,103.91
Each
units
- - 3P + N - - - SF3, SF6 - - 200 A 3 Tunnel - -
RS Stock No. 781-3838
Mfr. Part No.3831 6011
BrandSocomec
€321.28
Each
units
- - 4P - - - 22 x 58 mm - Yes 125 A - Shroud DIN Rail -
RS Stock No. 710-0598
Mfr. Part No.1SCA115901R1001
BrandABB
€300.98
Each
units
- - 4P - - - A2, A3, A4 - Yes 125 A 3 - DIN Rail -
RS Stock No. 813-9572
Mfr. Part No.GS2JU3N
€379.12
Each
units
- - 3 - - - J 200kA Yes 100 A 3 Cable 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. 686-7398
Mfr. Part No.1SCA108840R1001
BrandABB
€99.73
Each
units
- - 3P - - - A1 - Yes 32 A 3 Screw DIN Rail -
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. 727-5787
Mfr. Part No.1SCA022709R9330
BrandABB
€384.38
Each
units
- - 3P - - - B1-B2 - Yes 200 A 3 Screw DIN Rail -
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