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. 707-6146
Mfr. Part No.2CSM200923R1801
BrandABB
SGD7.76
Each
units
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 762-2610
Mfr. Part No.1SCA115877R1001
BrandABB
SGD554.40
Each
units
- - 4P - - - - 00, 000 160A Yes 125 A 3 - DIN Rail
RS Stock No. 762-2604
Mfr. Part No.1SCA115207R1001
BrandABB
SGD203.35
Each
units
- - 3P - - - - 000 80A Yes 63 A 3 - DIN Rail
RS Stock No. 707-6168
Mfr. Part No.2CSM204713R1801
BrandABB
SGD14.32
Each
units
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 710-0589
Mfr. Part No.1SCA115238R1001
BrandABB
SGD280.89
Each
units
- - 4P - - - - A2, A3 - Yes 63 A 3 Screw DIN Rail
RS Stock No. 710-0595
Mfr. Part No.1SCA115634R1001
BrandABB
SGD398.07
Each
units
- - 3P - - - - A2, A3, A4 - Yes 125 A 3 - DIN Rail
RS Stock No. 710-0602
Mfr. Part No.1SCA115896R1001
BrandABB
SGD576.03
Each
units
- - 4P - - - - A2, A3, A4 - Yes 160 A 3 - DIN Rail
RS Stock No. 762-2616
Mfr. Part No.1SCA115639R1001
BrandABB
SGD352.65
Each
units
- - 3P - - - - 00, 000 160A Yes 125 A 3 - DIN Rail
RS Stock No. 762-2613
Mfr. Part No.1SCA115209R1001
BrandABB
SGD350.69
Each
units
- - 4P - - - - 000 80A Yes 63 A 3 - DIN Rail
RS Stock No. 512-9471
Mfr. Part No.OS125B12
BrandABB
SGD450.57
Each
units
- - 3P - - - - A2, A3, A4 - Yes 125 A - Screw DIN Rail
RS Stock No. 686-7391
Mfr. Part No.1SCA108853R1001
BrandABB
SGD182.32
Each
units
- - 4P - - - - A1 - Yes 32 A 3 Screw DIN Rail
RS Stock No. 710-0586
Mfr. Part No.1SCA114614R1001
BrandABB
SGD363.03
Each
units
- - 4P - - - - A2, A3, A4 - Yes 100 A 3 - DIN Rail
RS Stock No. 727-2366
Mfr. Part No.2CMA142426R1000
BrandABB
SGD76.76
Each
units
NO - 3P - - - - - 50A Yes 25 A - Cable -
RS Stock No. 762-2641
Mfr. Part No.1SCA022719R0250
BrandABB
SGD945.46
Each
units
- - 3P - - - - 0 → 2 500A Yes 400 A 3 - DIN Rail
RS Stock No. 727-5790
Mfr. Part No.1SCA022750R0620
BrandABB
SGD669.17
Each
units
- - 3P + N - - - - B1-B2 - Yes 200 A 3 Screw DIN Rail
RS Stock No. 686-7398
Mfr. Part No.1SCA108840R1001
BrandABB
SGD157.02
Each
units
- - 3P - - - - A1 - Yes 32 A 3 Screw DIN Rail
RS Stock No. 762-2452
Mfr. Part No.OS100TPN-B
BrandABB
SGD1,148.17
Each
units
- - - - - - - - - - - - - -
RS Stock No. 707-6177
Mfr. Part No.2CSM204703R1801
BrandABB
SGD21.34
Each
units
- - DP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 727-5787
Mfr. Part No.1SCA022709R9330
BrandABB
SGD667.62
Each
units
- - 3P - - - - B1-B2 - Yes 200 A 3 Screw DIN Rail
RS Stock No. 686-7385
Mfr. Part No.1SCA108790R1001 - OS20FB12A1
BrandABB
SGD140.61
Each
units
- - 3P - - - - A1 - Yes 20 A - Screw DIN Rail