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
全新
RS庫存編號 213-8458
製造零件編號57035013
BrandSocomec
HK$1,668.32
毎盒:2 個
Box(es)
- Fused 3 - RMS 3P Enclosed 22 x 58mm 125A - 125A - - -
RS庫存編號 726-4911
製造零件編號63GNC
BrandEaton
HK$6,175.66
單位
- - 3P + N - - - - SB3, SB4 - - 63A 3 - -
全新
RS庫存編號 212-5788
製造零件編號3LD2230-0TK11
BrandSiemens
HK$379.99
單位
- - - - - - - - - - - - - -
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 781-3799
製造零件編號3631 3003
BrandSocomec
HK$921.84
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 212-5760
製造零件編號3KF1306-0LB11
BrandSiemens
HK$2,045.30
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5738
製造零件編號3KD5030-0RE10-0
BrandSiemens
HK$17,753.63
單位
- - - - - - - - - - - - - -
RS庫存編號 203-2109
製造零件編號3NP1133-1CA10
BrandSiemens
HK$411.14
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5789
製造零件編號3LD2514-0TK51
BrandSiemens
HK$771.40
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5780
製造零件編號3LD2113-0TK51
BrandSiemens
HK$583.48
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5797
製造零件編號3LD2714-0TK53
BrandSiemens
HK$1,266.63
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 213-1354
製造零件編號3LD2044-1TL51
BrandSiemens
HK$550.26
單位
- Fused 4 SENTRON 3LD - - - - - 16A - - -
RS庫存編號 708-1778
製造零件編號GS2NB3
HK$4,252.02
單位
- - 3P - - - - B1, B2, B3 - Yes - 3 Wire Lead -
RS庫存編號 781-3812
製造零件編號3831 3005
BrandSocomec
HK$1,239.64
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 535-0912
製造零件編號MGFA0633C
HK$2,809.60
單位
- - - - - - - - - - - - - -
RS庫存編號 762-2622
製造零件編號1SCA115882R1001
BrandABB
HK$3,249.58
單位
- - 4P - - - - 00, 000 160A Yes 160 A 3 - DIN Rail
全新
RS庫存編號 212-5822
製造零件編號3LD3450-0TK11
BrandSiemens
HK$586.60
單位
- - - - - - - - - - - - - -
RS庫存編號 179-9657
製造零件編號57025014
BrandSocomec
HK$723.95
單位
- - - - - - - - - - - - - -