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 781-3897
製造零件編號38416021
BrandSocomec
HK$3,442.34
單位
- - - - - - - - - - - - - -
RS庫存編號 686-7398
製造零件編號1SCA108840R1001
BrandABB
HK$896.39
單位
- - 3P - - - - A1 - Yes 32 A 3 Screw DIN Rail
RS庫存編號 762-2648
製造零件編號1SCA022825R2830
BrandABB
HK$9,612.62
單位
- - 3P - - - - 3 800A Yes 630 A 3 - DIN Rail
RS庫存編號 762-2641
製造零件編號1SCA022719R0250
BrandABB
HK$5,544.40
單位
- - 3P - - - - 0 → 2 500A Yes 400 A 3 - DIN Rail
全新
RS庫存編號 212-5715
製造零件編號3KD2230-2ME10-0
BrandSiemens
HK$712.22
單位
- - - - - - - - - - - - - -
RS庫存編號 781-3907
製造零件編號3841 6039
BrandSocomec
HK$7,276.29
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5716
製造零件編號3KD2830-0NE10-0
BrandSiemens
HK$836.81
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 211-5990
製造零件編號3VA1116-1AA46-0AA0
BrandSiemens
HK$4,620.10
單位
- Non-fused 4 0AA0 3VA11 - Enclosed - 160A - 160A - - -
全新
RS庫存編號 212-5811
製造零件編號3LD3250-0TL11
BrandSiemens
HK$467.20
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5815
製造零件編號3LD3340-0TL11
BrandSiemens
HK$796.32
單位
- - - - - - - - - - - - - -
RS庫存編號 781-3800
製造零件編號3631 4004
BrandSocomec
HK$1,265.08
單位
- - - - - - - - - - - - - -
RS庫存編號 707-6146
製造零件編號2CSM200923R1801
BrandABB
HK$58.25
單位
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS庫存編號 726-4778
製造零件編號125KXTNC2F
BrandEaton
HK$7,622.69
單位
- - 3P + N - - - - SB3, SB4, SD6, SO - - 125 A 3 - -
RS庫存編號 181-2587
製造零件編號A9N15651
HK$251.42
單位
- - - Canalis - - - - - - 63A - - -
全新
RS庫存編號 212-5792
製造零件編號3LD2530-0TK13
BrandSiemens
HK$585.56
單位
- - - - - - - - - - - - - -
RS庫存編號 708-1769
製造零件編號GS2LB3
HK$2,706.44
單位
- - 3P - - - - B1, B2 - Yes - 3 Wire Lead -
全新
RS庫存編號 212-5725
製造零件編號3KD3430-2NE20-0
BrandSiemens
HK$1,764.98
單位
- - - - - - - - - - - - - -
RS庫存編號 707-6161
製造零件編號2CSM204733R1801
BrandABB
HK$333.70
單位
- - 3P + N - - - - 10 x 38 mm - - 32 A 3 - -
全新
RS庫存編號 212-5821
製造零件編號3LD3440-0TL11
BrandSiemens
HK$830.58
單位
- - - - - - - - - - - - - -
RS庫存編號 781-3890
製造零件編號38416024
BrandSocomec
HK$5,327.23
單位
- - - - - - - - - - - - - -