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 213-1378
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 - - -
RS庫存編號 136-5277
BrandRS PRO
HK$1,489.90
單位
6NO - 6 - - 6PST - - - - 63A 3 - Wall Mount
全新
RS庫存編號 218-3281
製造零件編號3KF5380-0LF11
BrandSiemens
HK$16,221.84
單位
- Fused 3 SENTRON 3KF - - NH2, NH3 - - 800A - - -
全新
RS庫存編號 218-3274
製造零件編號3KF3425-0LF11
BrandSiemens
HK$5,478.90
單位
- Fused 4 SENTRON 3KF - - NH0, NH1 - - 250A - - -
全新
RS庫存編號 218-3293
製造零件編號3LD2030-1TL13
BrandSiemens
HK$377.08
單位
- Fused 4 SENTRON 3LD - - - - - 16A - - -
全新
RS庫存編號 212-5812
製造零件編號3LD3330-0TL11
BrandSiemens
HK$471.62
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 211-0195
製造零件編號5SG7631-0KK06
BrandSiemens
HK$518.885
/個 (每包:4個)
單位
- Fused 3 MINIZED 5SG - - D01 0.3A - 6A - - -
RS庫存編號 710-0582
製造零件編號OS100GB03P 1SCA114613R1001
BrandABB
HK$1,961.74
單位
- - 3P - - - - A2, A3, A4 - Yes 100 A 3 - DIN Rail
全新
RS庫存編號 216-5974
製造零件編號5TE1340
BrandSiemens
HK$2,384.93
單位
3P Fused 3 SENTRON 5TE Single Throw Enclosed - 200A - 200A - - -
全新
RS庫存編號 218-3195
製造零件編號3KD3432-0NE10-0
BrandSiemens
HK$2,008.93
單位
- Fused 3 SENTRON 3KD3 - - - - - 160A - - -
RS庫存編號 203-1994
製造零件編號3NP1123-1CA20
BrandSiemens
HK$406.08
單位
- - - - - - - - - - - - - -
RS庫存編號 202-7147
製造零件編號5SG7631-0KK16
BrandSiemens
HK$565.078
/個 (每包:4個)
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 219-8311
製造零件編號DF22N
HK$252.085
/個 (每包:6個)
單位
- Fused 1 TeSys DF22 - - 22 x 58mm 125A - - - - -
RS庫存編號 204-1565
製造零件編號P1-25/SE1
BrandEaton
HK$1,394.41
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 218-3237
製造零件編號3KD5240-0RE20-0
BrandSiemens
HK$32,980.83
單位
- Fused 4 SENTRON 3KD4 - - - - - 1250A - - -
全新
RS庫存編號 212-5796
製造零件編號3LD2714-0TK51
BrandSiemens
HK$1,310.64
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 213-1379
製造零件編號3LD2305-0TK13
BrandSiemens
HK$3,566.66
單位
3P Non-fused 3 SENTRON 3LD Single Throw Enclosed Size 5 160A - 160A - - -
全新
RS庫存編號 218-3162
製造零件編號3KD2240-2ME10-0
BrandSiemens
HK$920.67
單位
- Fused 4 SENTRON 3DK2 - - - - - 32A - - -
RS庫存編號 781-3806
製造零件編號3631 3004
BrandSocomec
HK$1,144.66
單位
- - - - - - - - - - - - - -