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 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 Maximum Operating Temperature
RS Stock No. 707-6146
Mfr. Part No.2CSM200923R1801
BrandABB
$9.22
Each
units
- SP - - - 10 x 38 mm - - 32 A 1 - - - -
RS Stock No. 707-6152
Mfr. Part No.2CSM204753R1801
BrandABB
$41.80
Each
units
- 3P - - - 10 x 38 mm - - 32 A 3 - - - -
RS Stock No. 707-6158
Mfr. Part No.2CSM200883R1801
BrandABB
$20.74
Each
units
- DP - - - 10 x 38 mm - - 32 A 1 - - - -
RS Stock No. 710-0570
Mfr. Part No.1SCA115235R1001
BrandABB
$273.57
Each
units
- 3P - - - A2, A3 - Yes 63 A 3 Screw DIN Rail - -
RS Stock No. 512-9459
Mfr. Part No.OS100GB12P
BrandABB
$308.59
Each
units
- 3P - - - BS - Yes 100 A 3 Conduit DIN Rail - -
RS Stock No. 707-6155
Mfr. Part No.2CSM200893R1801
BrandABB
$20.33
Each
units
- SP + N - - - 10 x 38 mm - - 32 A 1 - - - -
RS Stock No. 707-6177
Mfr. Part No.2CSM204703R1801
BrandABB
$17.21
Each
units
- DP - - - 10 x 38 mm - - 32 A 1 - - - -
RS Stock No. 707-6168
Mfr. Part No.2CSM204713R1801
BrandABB
$16.51
Each
units
- SP - - - 10 x 38 mm - - 32 A 1 - - - -
RS Stock No. 762-2648
Mfr. Part No.1SCA022825R2830
BrandABB
$1,478.95
Each
units
- 3P - - - 3 800A Yes 630 A 3 - DIN Rail - -
RS Stock No. 727-2372
Mfr. Part No.2CMA142422R1000
BrandABB
$163.43
Each
units
NO 6P - - - - 50A Yes 25 A - Cable - - -
RS Stock No. 762-2629
Mfr. Part No.1SCA115399R1001
BrandABB
$413.78
Each
units
- 3P - - - 00, 000 160A Yes 160 A 3 - DIN Rail - -
RS Stock No. 762-2607
Mfr. Part No.1SCA115189R1001
BrandABB
$217.09
Each
units
- 3P - - - 000 80A Yes 32 A 3 - DIN Rail - -
RS Stock No. 710-0592
Mfr. Part No.1SCA115413R1001
BrandABB
$405.90
Each
units
- 3P - - - A2, A3, A4 - Yes 160 A 3 - DIN Rail - -
RS Stock No. 710-0582
Mfr. Part No.1SCA114613R1001
BrandABB
$260.68
Each
units
- 3P - - - A2, A3, A4 - Yes 100 A 3 - DIN Rail -40°C +40°C
RS Stock No. 762-2641
Mfr. Part No.1SCA022719R0250
BrandABB
$928.44
Each
units
- 3P - - - 0 → 2 500A Yes 400 A 3 - DIN Rail - -
RS Stock No. 710-0598
Mfr. Part No.1SCA115901R1001
BrandABB
$466.10
Each
units
- 4P - - - A2, A3, A4 - Yes 125 A 3 - DIN Rail - -
RS Stock No. 710-0602
Mfr. Part No.1SCA115896R1001
BrandABB
$697.07
Each
units
- 4P - - - A2, A3, A4 - Yes 160 A 3 - DIN Rail - -
RS Stock No. 727-5787
Mfr. Part No.1SCA022709R9330
BrandABB
$525.38
Each
units
- 3P - - - B1-B2 - Yes 200 A 3 Screw DIN Rail - -
RS Stock No. 686-7391
Mfr. Part No.1SCA108853R1001
BrandABB
$132.69
Each
units
- 4P - - - A1 - Yes 32 A 3 Screw DIN Rail - -
RS Stock No. 727-2366
Mfr. Part No.2CMA142426R1000
BrandABB
$75.61
Each
units
NO 3P - - - - 50A Yes 25 A - Cable - - -