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. 518-7130
Mfr. Part No.3LD2250-0TK13
BrandSiemens
MYR251.29
Each
units
- - - - - - - - 10A - 32 A - - Panel Mount
RS Stock No. 707-6168
Mfr. Part No.2CSM204713R1801
BrandABB
MYR45.67
Each
units
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 707-6158
Mfr. Part No.2CSM200883R1801
BrandABB
MYR80.21
Each
units
- - DP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 686-7391
Mfr. Part No.1SCA108853R1001
BrandABB
MYR693.53
Each
units
- - 4P - - - - A1 - Yes 32 A 3 Screw DIN Rail
RS Stock No. 819-977
Mfr. Part No.30KXTNC2F
BrandEaton
MYR1,804.91
Each
units
- - 3P - - - - - - - 32 A 3 - -
RS Stock No. 781-3799
Mfr. Part No.3631 3003
BrandSocomec
MYR558.87
Each
units
- - - - - - - - - - - - - -
RS Stock No. 608-7586
Mfr. Part No.GK1EX
MYR1,136.13
Each
units
- - 3P + N - - - - 14 x 51mm - Yes 50A 1 Wire Lead -
RS Stock No. 708-1753
Mfr. Part No.GS2GB4
MYR960.80
Each
units
- - 4P - - - - A2, A3 - Yes - 3 Wire Lead -
RS Stock No. 781-3890
Mfr. Part No.38416024
BrandSocomec
MYR3,229.66
Each
units
- - - - - - - - - - - - - -
RS Stock No. 608-8040
Mfr. Part No.GS1KD3
MYR2,566.82
Each
units
- - - - - - - - - - - - - -
RS Stock No. 707-6155
Mfr. Part No.2CSM200893R1801
BrandABB
MYR58.23
Each
units
- - - - - - - - - - - - - -
RS Stock No. 819-955
Mfr. Part No.15KXTNC2F
BrandEaton
MYR1,415.89
Each
units
- - 3P - - - - - - - 20 A 3 - -
RS Stock No. 781-3878
Mfr. Part No.3641 4001
BrandSocomec
MYR404.54
Each
units
- - - - - - - - - - - - - -
RS Stock No. 513-5690
Mfr. Part No.3841 3006
BrandSocomec
MYR485.86
Each
units
- - 3P - - - - - 10A - 63 A 3 - -
RS Stock No. 815-3691
Mfr. Part No.GS1DDU3
MYR906.71
Each
units
- - - - - - - - - - - - - -
RS Stock No. 676-3233
Mfr. Part No.GS2S3
MYR7,146.20
Each
units
- - - - - - - - - - - - - -
RS Stock No. 781-3834
Mfr. Part No.3831 3011
BrandSocomec
MYR1,330.95
Each
units
- - - - - - - - - - - - - -
RS Stock No. 762-2610
Mfr. Part No.1SCA115877R1001
BrandABB
MYR1,520.92
Each
units
- - 4P - - - - 00, 000 160A Yes 125 A 3 - DIN Rail
RS Stock No. 513-5735
Mfr. Part No.3841 3024
BrandSocomec
MYR1,824.46
Each
units
- - 3P - - - - - 10A - 250 A 3 - -
RS Stock No. 714-1928
Mfr. Part No.SDF41G00633N
MYR2,136.14
Each
units
- - - - - - - - - - - - - -