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 Enclosed/Not Enclosed Mechanical Fuse Size Fuse Current Rating Auxiliary Contacts Available Maximum Current Electrical Phase Terminal Type Mounting Type
RS Stock No. 762-2446
Mfr. Part No.OS20TPN-B OS20TPN-B
BrandABB
£169.56
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 726-4901
Mfr. Part No.60KXDC2F
BrandEaton
£344.20
Each
Units
- - DP - - - - SB4 - - 63 A 1 - -
RS Stock No. 710-0589
Mfr. Part No.OS63GB04N1P 1SCA115238R1001
BrandABB
£152.36
Each
Units
- - 4P - - - - A2, A3 - Yes 63 A 3 Screw DIN Rail
RS Stock No. 686-7391
Mfr. Part No.OS32FB22A1N1 1SCA108853R1001
BrandABB
£98.89
Each
Units
- - 4P - - - - A1 - Yes 32 A 3 Screw DIN Rail
RS Stock No. 676-3215
Mfr. Part No.GS2K3
£227.00
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 762-2604
Mfr. Part No.OS63GD03P 1SCA115207R1001
BrandABB
£124.51
Each
Units
- - 3P - - - - 000 80A Yes 63 A 3 - DIN Rail
RS Stock No. 781-3800
Mfr. Part No.3631 4004
BrandSocomec
£89.98
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 708-1778
Mfr. Part No.GS2NB3
£410.00
Each
Units
- - 3P - - - - B1, B2, B3 - Yes - 3 Wire Lead -
RS Stock No. 707-6161
Mfr. Part No.2CSM204733R1801 E 93N/32
BrandABB
£29.17
Each
Units
- - 3P + N - - - - 10 x 38 mm - - 32 A 3 - -
RS Stock No. 707-6168
Mfr. Part No.2CSM204713R1801 E 91/32 PV
BrandABB
£8.54
Each
Units
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 726-4740
Mfr. Part No.104GC
BrandEaton
£932.13
Each
Units
- - 3P + N - - - - - - - 100A 3 - -
RS Stock No. 781-3799
Mfr. Part No.3631 3003
BrandSocomec
£58.77
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 762-2610
Mfr. Part No.OS125GD04N2P 1SCA115877R1001
BrandABB
£268.60
Each
Units
- - 4P - - - - 00, 000 160A Yes 125 A 3 - DIN Rail
RS Stock No. 781-3838
Mfr. Part No.3831 6011
BrandSocomec
£247.14
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 707-6158
Mfr. Part No.2CSM200883R1801 E 92/32
BrandABB
£13.36
Each
Units
- - DP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 676-3209
Mfr. Part No.GS2F3
£149.34
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 710-0582
Mfr. Part No.OS100GB03P 1SCA114613R1001
BrandABB
£161.93
Each
Units
- - 3P - - - - A2, A3, A4 - Yes 100 A 3 - DIN Rail
RS Stock No. 708-1750
Mfr. Part No.GS2JB4
£193.80
Each
Units
- - 4P - - - - A4 - Yes - 3 Wire Lead -
RS Stock No. 762-2622
Mfr. Part No.OS160GD04N2P 1SCA115882R1001
BrandABB
£347.84
Each
Units
- - 4P - - - - 000, 00 160A Yes 160 A 3 - DIN Rail
RS Stock No. 781-3897
Mfr. Part No.38416021
BrandSocomec
£335.34
Each
Units
- - - - - - - - - - - - - -