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 708-1747
製造零件編號GS2DB3
HK$714.77
單位
- - 3P - - - - A1 - Yes - 3 Wire Lead -
全新
RS庫存編號 218-3279
製造零件編號3KF5363-0MF11
BrandSiemens
HK$13,536.11
單位
- Fused 3 SENTRON 3KF - - NH2, NH3 - - 630A - - -
全新
RS庫存編號 218-3253
製造零件編號3KF1306-4RB11
BrandSiemens
HK$2,116.36
單位
- Fused 3 SENTRON 3KF - - NH00, NH000 - - 63A - - -
全新
RS庫存編號 212-5803
製造零件編號3LD3140-0TL11
BrandSiemens
HK$431.87
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 218-3228
製造零件編號3KD4640-0QE10-0
BrandSiemens
HK$10,109.11
單位
- Fused 4 SENTRON 3KD4 - - - - - 630A - - -
全新
RS庫存編號 218-3265
製造零件編號3KF2316-0MF11
BrandSiemens
HK$2,696.48
單位
- Fused 3 SENTRON 3KF - - NH00, NH000 - - 160A - - -
全新
RS庫存編號 218-3161
製造零件編號3KD2232-2ME10-0
BrandSiemens
HK$935.71
單位
- Fused 3 SENTRON 3KD2 - - - - - 32A - - -
全新
RS庫存編號 218-3183
製造零件編號3KD3042-0NE10-0
BrandSiemens
HK$1,858.53
單位
- Fused 4 SENTRON 3KD3 - - - - - 100A - - -
全新
RS庫存編號 211-4112
製造零件編號3KL5530-1AB01
BrandSiemens
HK$7,820.86
單位
- Fused 3 SENTRON 3KL - - 1, 2 - - 250A - - -
全新
RS庫存編號 212-5789
製造零件編號3LD2514-0TK51
BrandSiemens
HK$798.20
單位
- - - - - - - - - - - - - -
RS庫存編號 819-983
製造零件編號60KXSC2F
BrandEaton
HK$3,413.78
單位
- - SP - - - - - - - 63 A 1 - -
全新
RS庫存編號 212-5762
製造零件編號3KF3325-2LF11
BrandSiemens
HK$4,973.98
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5787
製造零件編號3LD2213-0TK53
BrandSiemens
HK$664.99
單位
- - - - - - - - - - - - - -
RS庫存編號 781-3853
製造零件編號3831 6015
BrandSocomec
HK$2,703.68
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 218-3165
製造零件編號3KD2242-2ME10-0
BrandSiemens
HK$1,117.27
單位
- Fused 4 SENTRON 3KD2 - - - - - 32A - - -
全新
RS庫存編號 218-3277
製造零件編號3KF4440-0LF11
BrandSiemens
HK$8,862.93
單位
- Fused 4 SENTRON 3KF - - NH1, NH2 - - 400A - - -
RS庫存編號 707-6155
製造零件編號2CSM200893R1801 E 91N/32
BrandABB
HK$116.49
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 213-1367
製造零件編號3NP1133-1CA11
BrandSiemens
HK$1,546.98
單位
- Fused 3 SENTRON 3NP11 - - NH00, NH000 - - 160A - - -
全新
RS庫存編號 212-5734
製造零件編號3KD4234-0PE40-0
BrandSiemens
HK$4,447.58
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5737
製造零件編號3KD4832-0QE10-0
BrandSiemens
HK$10,957.80
單位
- - - - - - - - - - - - - -