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
New
RS Stock No. 212-5734
Mfr. Part No.3KD4234-0PE40-0
BrandSiemens
TWD16,592.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 781-3822
Mfr. Part No.3831 3010
BrandSocomec
TWD7,313.00
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 216-5974
Mfr. Part No.5TE1340
BrandSiemens
TWD8,868.00
Each
units
3P Fused 3 SENTRON 5TE Single Throw Enclosed - 200A - 200A - - -
RS Stock No. 203-1994
Mfr. Part No.3NP1123-1CA20
BrandSiemens
TWD1,515.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 707-6168
Mfr. Part No.2CSM204713R1801 E 91/32 PV
BrandABB
TWD302.00
Each
units
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 202-7147
Mfr. Part No.5SG7631-0KK16
BrandSiemens
TWD2,108.00
Each (In a Pack of 4)
units
- - - - - - - - - - - - - -
New
RS Stock No. 212-5738
Mfr. Part No.3KD5030-0RE10-0
BrandSiemens
TWD68,534.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 204-1565
Mfr. Part No.P1-25/SE1
BrandEaton
TWD5,185.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 727-2362
Mfr. Part No.2CMA142417R1000 BWS 316 TPN
BrandABB
TWD1,940.00
Each
units
NO - 3P - - - - - 50A Yes 16 A - Cable -
New
RS Stock No. 218-3237
Mfr. Part No.3KD5240-0RE20-0
BrandSiemens
TWD122,640.00
Each
units
- Fused 4 SENTRON 3KD4 - - - - - 1250A - - -
New
RS Stock No. 213-1353
Mfr. Part No.3LD2013-1TL53
BrandSiemens
TWD2,317.00
Each
units
- Fused 4 SENTRON 3LD - - - - - 16A - - -
New
RS Stock No. 218-3186
Mfr. Part No.3KD3240-0NE10-0
BrandSiemens
TWD6,791.00
Each
units
- Fused 4 SENTRON 3KD3 - - - - - 125A - - -
New
RS Stock No. 218-3300
Mfr. Part No.3LD2203-3VK53
BrandSiemens
TWD2,792.00
Each
units
- Fused 6 SENTRON 3LD - - - - - 32A - - -
New
RS Stock No. 212-5797
Mfr. Part No.3LD2714-0TK53
BrandSiemens
TWD4,890.00
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 213-1379
Mfr. Part No.3LD2305-0TK13
BrandSiemens
TWD13,306.00
Each
units
3P Non-fused 3 SENTRON 3LD Single Throw Enclosed Size 5 160A - 160A - - -
New
RS Stock No. 218-3164
Mfr. Part No.3KD2240-2ME20-0
BrandSiemens
TWD3,424.00
Each
units
- Fused 4 SENTRON 3DK2 - - - - - 32A - - -
RS Stock No. 781-3806
Mfr. Part No.3631 3004
BrandSocomec
TWD4,270.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 181-2586
Mfr. Part No.A9N15646
TWD806.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 686-7398
Mfr. Part No.OS32FB12A1 1SCA108840R1001
BrandABB
TWD3,837.00
Each
units
- - 3P - - - - A1 - Yes 32 A 3 Screw DIN Rail
RS Stock No. 628-8098
Mfr. Part No.266006 & PN2-200
BrandEaton
TWD13,286.00
1 Box of 1
Box(es)
- - - - - - - - - - - - - -