Isolator & Switch Disconnectors

Fused switches 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. You can find out more in our complete guide to isolators and switch disconnectors.

Fused switches 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 switches used for?

Fused switches 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 over a non-fused switch 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 switches

Fused switches 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 213-1359
製造零件編號3LD2730-0TK11
BrandSiemens
TWD3,880.00
單位
- Fused 3 SENTRON 3LD - - - - - 100A - - -
全新
RS庫存編號 216-5959
製造零件編號3NP1133-1BC20
BrandSiemens
TWD2,561.00
單位
- Fused 3 SENTRON 3NP11 - - NH00, NH000 - - 160A - - -
RS庫存編號 203-9645
製造零件編號5SG7163
BrandSiemens
TWD3,763.00
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 218-3184
製造零件編號3KD3042-2NE10-0
BrandSiemens
TWD7,510.00
單位
- Fused 4 SENTRON 3KD3 - - - - - 100A - - -
全新
RS庫存編號 216-5960
製造零件編號3NP1143-1BC10
BrandSiemens
TWD7,670.00
單位
- Fused 3 SENTRON 3NP11 - - NH0, NH1 - - 250A - - -
全新
RS庫存編號 218-3185
製造零件編號3KD3230-0NE20-0
BrandSiemens
TWD5,393.00
單位
- Fused 3 SENTRON 3KD3 - - - - - 125A - - -
全新
RS庫存編號 212-5788
製造零件編號3LD2230-0TK11
BrandSiemens
TWD1,467.00
單位
3P - 3 SENTRON 3LD Single Throw Enclosed Size 2 32A - 32A - - -
RS庫存編號 202-7126
製造零件編號5SG7611-0KK16
BrandSiemens
TWD629.30
/個 (每包:12個)
單位
- - - - - - - - - - - - - -
RS庫存編號 202-7056
製造零件編號5SG7611-0KK10
BrandSiemens
TWD613.20
/個 (每包:12個)
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 218-3293
製造零件編號3LD2030-1TL13
BrandSiemens
TWD1,402.00
單位
- Fused 4 SENTRON 3LD - - - - - 16A - - -
全新
RS庫存編號 218-3194
製造零件編號3KD3430-0NE10-0
BrandSiemens
TWD6,072.00
單位
- Fused 3 SENTRON 3KD3 - - - - - 160A - - -
全新
RS庫存編號 212-5732
製造零件編號3KD4030-0PE10-0
BrandSiemens
TWD13,827.00
單位
3P Fused 3 SENTRON 3KD Single Throw Enclosed Size 3 315A - 315A - - -
全新
RS庫存編號 212-5800
製造零件編號3LD2830-0TK13
BrandSiemens
TWD5,010.00
單位
3P - 3 SENTRON 3LD Single Throw Enclosed Size 4 125A - 125A - - -
全新
RS庫存編號 212-5784
製造零件編號3LD2154-0TK51
BrandSiemens
TWD1,395.00
單位
3P - 3 SENTRON 3LD Single Throw Enclosed Size 2 25A - 25A - - -
全新
RS庫存編號 216-5961
製造零件編號3NP1143-1DA10
BrandSiemens
TWD4,634.00
單位
- Fused 3 SENTRON 3NP11 - - NH0, NH1 - - 250A - - -
全新
RS庫存編號 218-3271
製造零件編號3KF3325-0MF11
BrandSiemens
TWD16,259.00
單位
- Fused 3 SENTRON 3KF - - NH0, NH1 - - 250A - - -
全新
RS庫存編號 213-1371
製造零件編號3NP1153-1BC10
BrandSiemens
TWD9,859.00
單位
- Fused 3 SENTRON 3NP11 - - NH1, NH2 - - 400A - - -
全新
RS庫存編號 218-3256
製造零件編號3KF1308-2LB11
BrandSiemens
TWD10,466.00
單位
- Fused 3 SENTRON 3KF - - NH00, NH000 - - 80A - - -
全新
RS庫存編號 218-3294
製造零件編號3LD2044-1TL53
BrandSiemens
TWD2,117.00
單位
- Fused 4 SENTRON 3LD - - - - - 16A - - -
全新
RS庫存編號 218-3162
製造零件編號3KD2240-2ME10-0
BrandSiemens
TWD3,424.00
單位
- Fused 4 SENTRON 3DK2 - - - - - 32A - - -