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庫存編號 708-1744
製造零件編號GS2GB3
HK$1,259.93
單位
- - 3P - - - - A2, A3 - Yes - 3 Wire Lead -
全新
RS庫存編號 212-5780
製造零件編號3LD2113-0TK51
BrandSiemens
HK$603.75
單位
- - - - - - - - - - - - - -
RS庫存編號 781-3853
製造零件編號3831 6015
BrandSocomec
HK$2,703.68
單位
- - - - - - - - - - - - - -
RS庫存編號 204-1577
製造零件編號P3-100/SE3/SVB
BrandEaton
HK$2,991.10
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5807
製造零件編號3LD3230-0TL11
BrandSiemens
HK$415.29
單位
- - - - - - - - - - - - - -
RS庫存編號 608-7946
製造零件編號GS1DD4
HK$2,317.43
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 213-1378
製造零件編號3LD2244-0TK53
BrandSiemens
HK$713.33
單位
3P Non-fused 3 SENTRON 3LD Single Throw Enclosed Size 2 32A - 32A - - -
全新
RS庫存編號 212-5793
製造零件編號3LD2545-0TK51
BrandSiemens
HK$924.02
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5760
製造零件編號3KF1306-0LB11
BrandSiemens
HK$2,045.30
單位
- - - - - - - - - - - - - -
RS庫存編號 122-0516
製造零件編號38313039
BrandSocomec
HK$7,564.96
單位
- - 3 - FUSERBLOC - - BS88 400A Yes - 3 Screw DIN Rail
全新
RS庫存編號 212-5785
製造零件編號3LD2203-1TP51
BrandSiemens
HK$556.49
單位
- - - - - - - - - - - - - -
RS庫存編號 204-1576
製造零件編號P3-100/SE3
BrandEaton
HK$2,772.95
單位
- - - - - - - - - - - - - -
RS庫存編號 727-5838
製造零件編號1SCA022719R0840
BrandABB
HK$7,476.33
單位
- - 3P - - - - B1-B4 - Yes 400 A 3 Screw DIN Rail
全新
RS庫存編號 213-1355
製造零件編號3LD2064-1TC51
BrandSiemens
HK$696.65
單位
- Fused 4 SENTRON 3LD - - - - - 16A - - -
RS庫存編號 204-1575
製造零件編號P3-63/SE3/SVB
BrandEaton
HK$2,614.49
單位
3NO Fused 3 Main Switch, Maintenance Switch, Switch Disconnector P3 - Enclosed - 80A - - - - -
RS庫存編號 204-1574
製造零件編號P3-63/SE3
BrandEaton
HK$2,173.53
單位
- - - - - - - - - - - - - -
RS庫存編號 2509646450
製造零件編號KKVM332CC Y/R
BrandAltech
HK$1,747.62
單位
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