Isolator & Switch Disconnectors

Fused switches 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. You can find out more in our complete guide to isolators and switch disconnectors.

Fused switches 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 switches used for?

Fused switches 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 over a non-fused switch 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 switches

Fused switches 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. 203-9645
Mfr. Part No.5SG7163
BrandSiemens
PHP6,488.89
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 218-3293
Mfr. Part No.3LD2030-1TL13
BrandSiemens
PHP2,304.49
Each
units
- Fused 4 SENTRON 3LD - - - - - 16A - - -
RS Stock No. 707-6164
Mfr. Part No.2CSM204723R1801 E 94/32
BrandABB
PHP2,587.40
Each
units
- - 4P - - - - 10 x 38 mm - - 32 A 3 - -
RS Stock No. 727-5787
Mfr. Part No.OS200B03P 1SCA022709R9330
BrandABB
PHP25,844.46
Each
units
- - 3P - - - - B1-B2 - Yes 200 A 3 Screw DIN Rail
New
RS Stock No. 212-5738
Mfr. Part No.3KD5030-0RE10-0
BrandSiemens
PHP118,168.35
Each
units
3P Fused 3 SENTRON 3KD Single Throw Enclosed Size 5 1000A - 1000A - - -
RS Stock No. 204-1577
Mfr. Part No.P3-100/SE3/SVB
BrandEaton
PHP20,252.77
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 219-8309
Mfr. Part No.DF221
PHP1,299.967
Each (In a Pack of 6)
units
- Fused 1 TeSys DF22 - - 22 x 58mm 125A - - - - -
RS Stock No. 203-9644
Mfr. Part No.5SG7123
BrandSiemens
PHP5,188.46
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 218-3292
Mfr. Part No.3LD2030-1TL11
BrandSiemens
PHP2,304.49
Each
units
- Fused 4 SENTRON 3LD - - - - - 16A - - -
New
RS Stock No. 212-5844
Mfr. Part No.5SG7234-1
BrandSiemens
PHP7,381.95
Each
units
3P Fused 3 MINIZED 5SG Single Throw - D02 63A - 63A - - -
New
RS Stock No. 212-5807
Mfr. Part No.3LD3230-0TL11
BrandSiemens
PHP2,764.17
Each
units
- - 4 SENTRON 3LD3 Single Throw Enclosed - 32A - 32A - - -
RS Stock No. 204-1576
Mfr. Part No.P3-100/SE3
BrandEaton
PHP18,022.23
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2509646450
Mfr. Part No.KKVM332CC Y/R
BrandAltech
PHP9,487.08
Each
units
- - - - - - - - - - - - - -