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. 819-955
Mfr. Part No.15KXTNC2F
BrandEaton
TWD8,814.00
Each
units
- 3P - - - - - - 20 A 3 - - - -
RS Stock No. 819-949
Mfr. Part No.15KXSC2F
BrandEaton
TWD6,251.00
Each
units
- SP - - - - - - 20 A 1 - - - -
RS Stock No. 819-961
Mfr. Part No.30KXSC2F
BrandEaton
TWD8,176.00
Each
units
- SP - - - - - - 32 A 1 - - - -
RS Stock No. 676-3227
Mfr. Part No.GS2L3
TWD13,176.00
Each
units
- 3P - - - - - Yes 125 A dc, 160 A ac 3 - DIN rail -20°C +70°C
RS Stock No. 819-983
Mfr. Part No.60KXSC2F
BrandEaton
TWD12,225.00
Each
units
- SP - - - - - - 63 A 1 - - - -
RS Stock No. 513-5713
Mfr. Part No.3841 3016
BrandSocomec
TWD9,588.00
Each
units
- 3P - - - - 10A - 160 A 3 - - - -
RS Stock No. 608-7558
Mfr. Part No.GK1ES
TWD4,902.00
Each
units
- 3P - - - 14 x 51 mm - Yes 50 A - Wire Lead DIN Rail -50°C +70°C
RS Stock No. 608-7564
Mfr. Part No.GK1ET
TWD6,565.00
Each
units
- 4P - - - 14 x 51 mm - Yes 50 A - Wire Lead DIN Rail -50°C +70°C
RS Stock No. 608-7570
Mfr. Part No.GK1EW
TWD5,486.00
Each
units
- 3P - - - 14 x 51 mm - Yes 50 A 1 Wire Lead DIN Rail -50°C +70°C
RS Stock No. 179-9648
Mfr. Part No.38313016
BrandSocomec
TWD13,981.00
Each
units
3P 3 FUSERBLOC - - - 160A Yes 160 A - - DIN Rail - -
RS Stock No. 727-2362
Mfr. Part No.2CMA142417R1000
BrandABB
TWD1,937.00
Each
units
NO 3P - - - - 50A Yes 16 A - Cable - - -
RS Stock No. 727-5813
Mfr. Part No.1SCA022750R7800
BrandABB
TWD21,474.00
Each
units
- 4P - - - B1-B3 - Yes 250 A 3 Screw DIN Rail - -
RS Stock No. 608-7586
Mfr. Part No.GK1EX
TWD7,285.00
Each
units
- 3P + N - - - 14 x 51 mm - Yes 50 A 1 Wire Lead DIN Rail -50°C +70°C
RS Stock No. 179-9657
Mfr. Part No.57025014
BrandSocomec
TWD2,247.00
Each
units
3P+N 3 RMS - - 14 x 51 mm 50A Yes 50 A - - - - -
RS Stock No. 181-2587
Mfr. Part No.A9N15651
TWD936.00
Each
units
- - Canalis - - - - - 63 A - Tunnel Plug-In - -
RS Stock No. 781-3838
Mfr. Part No.3831 6011
BrandSocomec
TWD10,789.00
Each
units
- 4P - - - 22 x 58 mm - Yes 125 A - Shroud DIN Rail - -
RS Stock No. 172-3017
Mfr. Part No.36153039
BrandSocomec
TWD61,210.00
Each
units
NO/NC, 2NO/2NC 3 FUSERBLOC - - B1, B2, B3, B4, 2 400A Yes 400 A 3 Cage DIN Rail - -
RS Stock No. 710-0570
Mfr. Part No.1SCA115235R1001
BrandABB
TWD6,239.00
Each
units
- 3P - - - A2, A3 - Yes 63 A 3 Screw DIN Rail - -
RS Stock No. 608-8006
Mfr. Part No.GS1JD3
TWD15,064.00
Each
units
- 3P - - - 22 x 58 mm - Yes 100 A ac, 100 A dc 3 Screw DIN Rail - -
RS Stock No. 534-5156
Mfr. Part No.MGFA0203C
TWD7,734.00
Each
units
- 3P + N - - - A1, A2, NITD20 - - 20 A - - - - -