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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Beskrivning Pris 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
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RS-artikelnummer 212-5813
Tillv. art.nr3LD3340-0TK11
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754,18 kr
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RS-artikelnummer 213-1371
Tillv. art.nr3NP1153-1BC10
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2 926,31 kr
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- Fused 3 SENTRON 3NP11 - - NH1, NH2 - - 400A - - -
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RS-artikelnummer 213-1372
Tillv. art.nr3NP1153-1DA10
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1 891,40 kr
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- Fused 3 SENTRON 3NP11 - - NH1, NH2 - - 400A - - -
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RS-artikelnummer 212-5815
Tillv. art.nr3LD3340-0TL11
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912,39 kr
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RS-artikelnummer 213-1366
Tillv. art.nr3NP1133-1BC10
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716,11 kr
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- Fused 3 SENTRON 3NP11 - - NH00, NH000 - - 160A - - -
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RS-artikelnummer 212-5790
Tillv. art.nr3LD2514-0TK53
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883,84 kr
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RS-artikelnummer 213-1363
Tillv. art.nr3NP1123-1BC20
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667,34 kr
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- Fused 3 SENTRON 3NP11 - - - - - 160A - - -
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RS-artikelnummer 211-0129
Tillv. art.nr3KF1408-0MB11
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3 306,97 kr
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- Fused 4 SENTRON 3KF - Enclosed NH00, NH000 11 800A - 80A - - -
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RS-artikelnummer 212-5816
Tillv. art.nr3LD3350-0TL11
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703,03 kr
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RS-artikelnummer 212-5722
Tillv. art.nr3KD3230-2NE10-0
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1 796,23 kr
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RS-artikelnummer 216-5962
Tillv. art.nr3NP1143-1DA11
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2 593,24 kr
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- Fused 3 SENTRON 3NP11 - - NH0, NH1 - - 250A - - -
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RS-artikelnummer 212-5784
Tillv. art.nr3LD2154-0TK51
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413,97 kr
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RS-artikelnummer 212-5739
Tillv. art.nr3KD5030-0RE20-0
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20 341,43 kr
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RS-artikelnummer 213-1381
Tillv. art.nr3LD2405-0TK11
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4 782,02 kr
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3P Non-fused 3 SENTRON 3LD Single Throw Enclosed Size 5 250A - 250A - - -
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RS-artikelnummer 212-5802
Tillv. art.nr3LD3140-0TK11
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405,64 kr
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RS-artikelnummer 202-7056
Tillv. art.nr5SG7611-0KK10
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163,159 kr
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RS-artikelnummer 212-5804
Tillv. art.nr3LD3150-0TK11
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337,83 kr
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RS-artikelnummer 212-5726
Tillv. art.nr3KD3630-0NE10-0
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2 224,47 kr
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RS-artikelnummer 212-5728
Tillv. art.nr3KD3630-0PE20-0
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2 771,67 kr
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RS-artikelnummer 212-5776
Tillv. art.nr3LD2013-0TK51
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604,30 kr
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