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 Number of Poles Range Series Throw Configuration Mechanical Fuse Size Fuse Current Rating Auxiliary Contacts Available Maximum Current Electrical Phase Terminal Type Mounting Type Minimum Operating Temperature Maximum Operating Temperature
RS庫存編號 608-7564
製造零件編號GK1ET
HK$850.00
單位
- 4P - - - 14 x 51 mm - Yes 50 A - Wire Lead DIN Rail -50°C +70°C
RS庫存編號 608-7968
製造零件編號GS1FD3
HK$1,490.00
單位
- 3P - - - 14 x 51 mm - Yes 40 A dc, 50 A ac 3 Screw DIN Rail - -
RS庫存編號 676-3221
製造零件編號GS2N3
HK$4,605.88
單位
- 3P - - - 1 - Yes 200 A dc, 250 A ac 3 - DIN rail -20°C +70°C
RS庫存編號 708-1740
製造零件編號GS2DB4
HK$694.60
單位
- 4P - - - A1 - Yes 20 A dc, 23 A ac 3 Wire Lead DIN Rail -20°C +70°C
RS庫存編號 676-3233
製造零件編號GS2S3
HK$11,920.00
單位
- 3P - - - 3 - - 400 A dc, 630 A ac 3 - DIN rail -20°C +70°C
RS庫存編號 708-1750
製造零件編號GS2JB4
HK$1,540.00
單位
- 4P - - - A4 - Yes 100 A ac, 100 A dc 3 Wire Lead DIN Rail -20°C +70°C
RS庫存編號 708-1744
製造零件編號GS2GB3
HK$820.00
單位
- 3P - - - A2, A3 - Yes 40 A dc, 63 A ac 3 Wire Lead DIN Rail -20°C +70°C
RS庫存編號 708-1753
製造零件編號GS2GB4
HK$1,100.00
單位
- 4P - - - A2, A3 - Yes 40 A dc, 63 A ac 3 Wire Lead DIN Rail -20°C +70°C
RS庫存編號 813-9575
製造零件編號GS2MU3N
HK$8,538.40
單位
- 3 - - - J 200kA Yes 200 A 3 Cable DIN Rail - -
RS庫存編號 419-031
製造零件編號KNB50SF4
HK$1,980.00
單位
- 3P + N - Harmony K - NF 14 x 51 - - 50 A 3 Cable Clamp - - -
RS庫存編號 676-3227
製造零件編號GS2L3
HK$3,580.00
單位
- 3P - - - - - Yes 125 A dc, 160 A ac 3 - DIN rail -20°C +70°C
RS庫存編號 708-1747
製造零件編號GS2DB3
HK$465.00
單位
- 3P - - - A1 - Yes 20 A dc, 23 A ac 3 Wire Lead DIN Rail -20°C +70°C
RS庫存編號 608-7570
製造零件編號GK1EW
HK$890.00
單位
- 3P - - - 14 x 51 mm - Yes 50 A 1 Wire Lead DIN Rail -50°C +70°C
RS庫存編號 676-3209
製造零件編號GS2F3
HK$1,750.00
單位
- 3P - - - 14 x 51 mm - Yes 40 A dc, 50 A ac 3 - DIN rail -20°C +70°C
RS庫存編號 608-7592
製造零件編號GK1EY
HK$910.00
單位
- 4P - - - 14 x 51 mm - Yes 50 A 1 Wire Lead DIN Rail -50°C +70°C
RS庫存編號 815-3691
製造零件編號GS1DDU3
HK$1,327.69
單位
- 3 - - - CC - - 30 A - - DIN Rail - -
RS庫存編號 608-7930
製造零件編號GS1DD3
HK$1,030.00
單位
- 3P - - - 10 x 38 mm - - 20 A dc, 32 A ac 3 Screw DIN Rail - -
RS庫存編號 608-8040
製造零件編號GS1KD3
HK$2,370.00
單位
- 3P - - - 22 x 58 mm - Yes 100 A dc, 125 A ac 3 Screw DIN Rail - -
RS庫存編號 813-9572
製造零件編號GS2JU3N
HK$3,875.17
單位
- 3 - - - J 200kA Yes 100 A 3 Cable DIN Rail - -
RS庫存編號 708-1778
製造零件編號GS2NB3
HK$3,280.00
單位
- 3P - - - B1, B2, B3 - Yes 200 A dc, 250 A ac 3 Wire Lead DIN Rail -20°C +70°C