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. 136-5277
BrandRS PRO
MYR892.96
Each
units
6NO 6 - - 6PST - - - 63 A 3 - Wall Mount - -
RS Stock No. 136-5294
BrandRS PRO
MYR1,376.79
Each
units
- 3 - - - - - - 80 A 3 - Panel Mount - -
RS Stock No. 608-7946
Mfr. Part No.GS1DD4
MYR1,021.05
Each
units
- 4P - - - 10 x 38 mm - - 20 A dc, 32 A ac 3 Screw DIN Rail - -
RS Stock No. 707-6177
Mfr. Part No.2CSM204703R1801
BrandABB
MYR53.58
Each
units
- DP - - - 10 x 38 mm - - 32 A 1 - - - -
RS Stock No. 513-5729
Mfr. Part No.3841 3021
BrandSocomec
MYR1,457.43
Each
units
- 3P - - - B1-B2 200A - 200 A 3 - - - -
RS Stock No. 381-5726
Mfr. Part No.5560S
MYR50.72
Each
units
- DP - Sentry - - - - 63 A - Tunnel - -5°C +40°C
RS Stock No. 608-7558
Mfr. Part No.GK1ES
MYR538.53
Each
units
- 3P - - - 14 x 51 mm - Yes 50 A - Wire Lead DIN Rail -50°C +70°C
RS Stock No. 247-4065
Mfr. Part No.DTL400KIT
MYR1,413.88
Each
units
- 3P - - - NH02 - - 400 A 3 - Surface Mount - -
RS Stock No. 707-6161
Mfr. Part No.2CSM204733R1801
BrandABB
MYR148.82
Each
units
- 3P + N - - - 10 x 38 mm - - 32 A 3 - - - -
RS Stock No. 676-3227
Mfr. Part No.GS2L3
MYR2,074.02
Each
units
- 3P - - - 0 - Yes 125 A dc, 160 A ac 3 - DIN rail -20°C +70°C
RS Stock No. 419-555
Mfr. Part No.5500S
MYR61.03
Each
units
- DP - Sentry - - - - 100 A - Tunnel - -5°C +40°C
RS Stock No. 628-8098
Mfr. Part No.PN2-200
BrandEaton
MYR1,580.84
1 Box of 1
Box(es)
- 3P - PN2 - - 200A - 250 A - Screw Panel Mount - -
RS Stock No. 238-4833
Mfr. Part No.0 058 22
BrandLegrand
MYR72.83
Each
units
- SP + N - - - 8.5 x 31.5 mm - - 20 A 1 Cage DIN rail -5°C +40°C
RS Stock No. 707-6146
Mfr. Part No.2CSM200923R1801
BrandABB
MYR19.61
Each
units
- SP - - - 10 x 38 mm - - 32 A 1 - - - -
RS Stock No. 608-7930
Mfr. Part No.GS1DD3
MYR938.08
Each
units
- 3P - - - 10 x 38 mm - - 20 A dc, 32 A ac 3 Screw DIN Rail - -
RS Stock No. 512-9459
Mfr. Part No.OS100GB12P
BrandABB
MYR1,162.50
Each
units
- 3P - - - BS - Yes 100 A 3 Conduit DIN Rail - -
RS Stock No. 813-9572
Mfr. Part No.GS2JU3N
MYR2,322.63
Each
units
- 3 - - - J 200kA Yes 100 A 3 Cable DIN Rail - -
RS Stock No. 513-5684
Mfr. Part No.3841 3003
BrandSocomec
MYR266.33
Each
units
- 3P - - - - 10A - 32 A 3 - - - -
RS Stock No. 238-4811
Mfr. Part No.0 058 20
BrandLegrand
MYR64.71
Each
units
- SP + N - - - 8.5 x 23 mm - - 10 A 1 Cage DIN rail -5°C +40°C
RS Stock No. 686-7389
Mfr. Part No.1SCA108796R1001
BrandABB
MYR419.22
Each
units
- 4P - - - A1 - Yes 20 A - Screw DIN Rail - -
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