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 710-0592
製造零件編號1SCA115413R1001
BrandABB
HK$2,653.72
單位
- - 3P - - - - A2, A3, A4 - Yes 160 A 3 - DIN Rail
RS庫存編號 710-0582
製造零件編號1SCA114613R1001
BrandABB
HK$1,704.28
單位
- - 3P - - - - A2, A3, A4 - Yes 100 A 3 - DIN Rail
全新
RS庫存編號 213-1368
製造零件編號3NP1133-1CA20
BrandSiemens
HK$493.16
單位
- Fused 3 SENTRON 3NP11 - - NH00, NH000 - - 160A - - -
RS庫存編號 686-7391
製造零件編號1SCA108853R1001
BrandABB
HK$1,040.80
單位
- - 4P - - - - A1 - Yes 32 A 3 Screw DIN Rail
全新
RS庫存編號 212-5783
製造零件編號3LD2144-0TK53
BrandSiemens
HK$612.55
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5844
製造零件編號5SG7234-1
BrandSiemens
HK$1,090.14
單位
3P Fused 3 MINIZED 5SG Single Throw - D02 63A - 63A - - -
RS庫存編號 238-4833
製造零件編號0 058 22
BrandLegrand
HK$171.62
單位
- - SP + N - - - - 8.5 x 31.5 mm - - 20 A 1 Cage DIN rail
RS庫存編號 815-3691
製造零件編號GS1DDU3
HK$1,882.22
單位
- - - - - - - - - - - - - -
RS庫存編號 202-7147
製造零件編號5SG7631-0KK16
BrandSiemens
HK$546.105
/個 (每包:4個)
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5778
製造零件編號3LD2030-0TK13
BrandSiemens
HK$287.59
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5715
製造零件編號3KD2230-2ME10-0
BrandSiemens
HK$712.22
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 213-1381
製造零件編號3LD2405-0TK11
BrandSiemens
HK$4,173.66
單位
3P Non-fused 3 SENTRON 3LD Single Throw Enclosed Size 5 250A - 250A - - -
RS庫存編號 707-6158
製造零件編號2CSM200883R1801
BrandABB
HK$152.84
單位
- - DP - - - - 10 x 38 mm - - 32 A 1 - -
RS庫存編號 707-6168
製造零件編號2CSM204713R1801
BrandABB
HK$76.29
單位
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS庫存編號 819-955
製造零件編號15KXTNC2F
BrandEaton
HK$2,366.99
單位
- - 3P - - - - - - - 20 A 3 - -
RS庫存編號 179-9648
製造零件編號38313016
BrandSocomec
HK$3,089.65
單位
3P - 3 FUSERBLOC - - - - 160A Yes 160 A - - DIN Rail
RS庫存編號 762-2455
製造零件編號OS32TPN-B
BrandABB
HK$2,617.08
單位
- - - - - - - - - - - - - -
RS庫存編號 727-2375
製造零件編號2CMA142420R1000
BrandABB
HK$532.54
單位
NO - 3P - - - - - 50A Yes 25 A - Cable -
RS庫存編號 781-3847
製造零件編號3831 3012
BrandSocomec
HK$2,078.84
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 212-5739
製造零件編號3KD5030-0RE20-0
BrandSiemens
HK$17,753.63
單位
- - - - - - - - - - - - - -