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. 518-7130
Mfr. Part No.3LD2250-0TK13
BrandSiemens
PHP2,418.32
Each
units
- - - - - - - - 10A - 32 A - - Panel Mount
New
RS Stock No. 213-1381
Mfr. Part No.3LD2405-0TK11
BrandSiemens
PHP27,779.93
Each
units
3P Non-fused 3 SENTRON 3LD Single Throw Enclosed Size 5 250A - 250A - - -
New
RS Stock No. 212-5806
Mfr. Part No.3LD3230-0TK11
BrandSiemens
PHP2,093.86
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 212-5717
Mfr. Part No.3KD2830-0NE20-0
BrandSiemens
PHP5,569.81
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 212-5786
Mfr. Part No.3LD2213-0TK51
BrandSiemens
PHP4,277.56
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 212-5812
Mfr. Part No.3LD3330-0TL11
BrandSiemens
PHP3,033.68
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 213-1382
Mfr. Part No.3LD2504-1TP51
BrandSiemens
PHP5,638.91
Each
units
- Non-fused 3 SENTRON 3LD Single Throw Enclosed Size 3 63A - 63A - - -
New
RS Stock No. 213-1383
Mfr. Part No.3LD2830-0TK11
BrandSiemens
PHP8,638.04
Each
units
3P Non-fused 3 SENTRON 3LD Single Throw Enclosed Size 4 125A - 125A - - -
New
RS Stock No. 212-5792
Mfr. Part No.3LD2530-0TK13
BrandSiemens
PHP3,897.48
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 212-5810
Mfr. Part No.3LD3250-0TK11
BrandSiemens
PHP2,211.34
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 212-5816
Mfr. Part No.3LD3350-0TL11
BrandSiemens
PHP4,084.06
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 217-6839
Mfr. Part No.3KF3325-0LF11
BrandSiemens
PHP26,721.53
Each
units
- Fused 3 SENTRON 3KF - - NH0, NH1 - - 250A - - -
New
RS Stock No. 212-5807
Mfr. Part No.3LD3230-0TL11
BrandSiemens
PHP2,764.17
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 212-5799
Mfr. Part No.3LD2814-0TK53
BrandSiemens
PHP10,503.85
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 213-1363
Mfr. Part No.3NP1123-1BC20
BrandSiemens
PHP3,876.75
Each
units
- Fused 3 SENTRON 3NP11 - - - - - 160A - - -
New
RS Stock No. 212-5776
Mfr. Part No.3LD2013-0TK51
BrandSiemens
PHP3,510.50
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 212-5789
Mfr. Part No.3LD2514-0TK51
BrandSiemens
PHP5,134.45
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 211-0129
Mfr. Part No.3KF1408-0MB11
BrandSiemens
PHP19,210.99
Each
units
- Fused 4 SENTRON 3KF - Enclosed NH00, NH000 11 800A - 80A - - -
New
RS Stock No. 212-5716
Mfr. Part No.3KD2830-0NE10-0
BrandSiemens
PHP5,569.81
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 212-5712
Mfr. Part No.3KD1630-2ME20-0
BrandSiemens
PHP4,097.88
Each
units
- - - - - - - - - - - - - -