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. 136-5277
BrandRS PRO
£126.67
Each
Units
6NO - 6 - - 6PST - - - - 63 A 3 - Wall Mount
RS Stock No. 513-5690
Mfr. Part No.3841 3006
BrandSocomec
£78.15
Each
Units
- - 3P - - - - - 10A - 63 A 3 - -
RS Stock No. 726-4917
Mfr. Part No.60KXTNC2F
BrandEaton
£441.98
Each
Units
- - 3P + N - - - - SB4 - - 63 A 3 - -
RS Stock No. 513-2089
Mfr. Part No.3641 3001
BrandSocomec
£48.11
Each
Units
- - 3P - - - - A1 - Yes 32 A 3 Shroud -
RS Stock No. 518-7130
Mfr. Part No.3LD2250-0TK13
BrandSiemens
£24.77
Each
Units
- - - - - - - - 10A - 32 A - - Panel Mount
RS Stock No. 513-5707
Mfr. Part No.3841 3010
BrandSocomec
£121.62
Each
Units
- - 3P - - - - - 10A - 100 A 3 - -
RS Stock No. 726-4813
Mfr. Part No.203GNC
BrandEaton
£1,300.17
Each
Units
- - 3P + N - - - - SF3, SF6 - - 200 A 3 Tunnel -
RS Stock No. 513-5684
Mfr. Part No.3841 3003
BrandSocomec
£44.61
Each
Units
- - 3P - - - - - 10A - 32 A 3 - -
RS Stock No. 513-5713
Mfr. Part No.3841 3016
BrandSocomec
£219.64
Each
Units
- - 3P - - - - - 10A - 160 A 3 - -
RS Stock No. 781-3884
Mfr. Part No.3841 6010
BrandSocomec
£173.98
Each
Units
- - 4P - - - - A4 - Yes 100 A - Shroud DIN Rail
RS Stock No. 781-3881
Mfr. Part No.3841 6006
BrandSocomec
£108.20
Each
Units
- - 4P - - - - A2, A3 - Yes 63 A - Shroud DIN Rail
RS Stock No. 513-5729
Mfr. Part No.3841 3021
BrandSocomec
£244.22
Each
Units
- - 3P - - - - B1-B2 200A - 200 A 3 - -
RS Stock No. 443-839
Mfr. Part No.DTL160KIT
£65.53
Each
Units
- - 3P - - - - C00/00, NH 160A - 160 A 3 - Surface Mount
RS Stock No. 513-5741
Mfr. Part No.3841 3039
BrandSocomec
£522.22
Each
Units
- - 3P - - - - - 10A - 400 A 3 - -
RS Stock No. 726-4816
Mfr. Part No.203GNL
BrandEaton
£1,175.56
Each
Units
- - 3P + N - - - - SF3, SF6 - - 200 A 3 Tunnel -
RS Stock No. 726-4737
Mfr. Part No.103GNC
BrandEaton
£818.39
Each
Units
- - 3P + N - - - - SB3, SB4, SD5, SO - - 100 A 3 Tunnel -
RS Stock No. 781-3878
Mfr. Part No.3641 4001
BrandSocomec
£65.93
Each
Units
- - 3P + N - - - - A1 - Yes 32 A - Shroud DIN Rail
RS Stock No. 707-6146
Mfr. Part No.2CSM200923R1801
BrandABB
£4.29
Each
Units
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 726-4778
Mfr. Part No.125KXTNC2F
BrandEaton
£799.10
Each
Units
- - 3P + N - - - - SB3, SB4, SD6, SO - - 125 A 3 - -
RS Stock No. 513-5735
Mfr. Part No.3841 3024
BrandSocomec
£336.21
Each
Units
- - 3P - - - - - 10A - 250 A 3 - -
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