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 686-7398
製造零件編號1SCA108840R1001
BrandABB
HK$824.50
單位
- 3P - - - A1 - Yes 32 A 3 Screw DIN Rail - -
RS庫存編號 499-7201
製造零件編號T0-2-8900/E + EZ-P1
BrandEaton
HK$196.97
單位
- 4P - - - GG/gL 20A - 20 A - - Panel Mount - -
RS庫存編號 762-2648
製造零件編號1SCA022825R2830
BrandABB
HK$9,090.00
單位
- 3P - - - 3 800A Yes 630 A 3 - DIN Rail - -
RS庫存編號 518-7130
製造零件編號3LD2250-0TK13
BrandSiemens
HK$236.00
單位
- - - - - - 10A - 32 A - - Panel Mount - -
RS庫存編號 781-3884
製造零件編號3841 6010
BrandSocomec
HK$1,995.83
單位
- 4P - - - A4 - Yes 100 A - Shroud DIN Rail - -
RS庫存編號 781-3897
製造零件編號38416021
BrandSocomec
HK$3,846.69
單位
- 4P - - - B1, B2 - Yes 200 A - Shroud DIN Rail - -
RS庫存編號 443-845
製造零件編號DTL250KIT
HK$1,347.96
單位
- 3P - - - NH - - 250 A 3 - Surface Mount - -
RS庫存編號 727-2366
製造零件編號2CMA142426R1000
BrandABB
HK$361.02
單位
NO 3P - - - - 50A Yes 25 A - Cable - - -
RS庫存編號 727-2369
製造零件編號2CMA142423R1000
BrandABB
HK$360.33
單位
NO 3P - - - - 50A Yes 16 A - Cable - - -
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 238-4811
製造零件編號0 058 20
BrandLegrand
HK$121.82
單位
- SP + N - - - 8.5 x 23 mm - - 10 A 1 Cage DIN rail -5°C +40°C
RS庫存編號 762-2461
製造零件編號OS125TPN-B
BrandABB
HK$6,030.00
單位
- 3P + N - - - A2, A3 - - 125 A 3 - Wall Mount - -
RS庫存編號 781-3907
製造零件編號3841 6039
BrandSocomec
HK$8,131.51
單位
- 4P - - - B1, B2, B3, B4 - Yes 400 A - Shroud DIN Rail - -
RS庫存編號 727-2372
製造零件編號2CMA142422R1000
BrandABB
HK$870.20
單位
NO 6P - - - - 50A Yes 25 A - Cable - - -
RS庫存編號 238-4827
製造零件編號0 058 21
BrandLegrand
HK$121.28
單位
- SP + N - - - 10.3 x 25.8 mm - - 16 A 1 Cage DIN rail -5°C +40°C
RS庫存編號 726-4737
製造零件編號103GNC
BrandEaton
HK$6,854.98
單位
- 3P + N - - - SB3, SB4, SD5, SO - - 100 A 3 Tunnel - - -
RS庫存編號 686-7385
製造零件編號1SCA108790R1001 - OS20FB12A1
BrandABB
HK$615.73
單位
- 3P - - - A1 - Yes 20 A - Screw DIN Rail - -
RS庫存編號 762-2610
製造零件編號1SCA115877R1001
BrandABB
HK$2,330.00
單位
- 4P - - - 00, 000 160A Yes 125 A 3 - DIN Rail - -
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 781-3819
製造零件編號3631 5004
BrandSocomec
HK$978.69
單位
- 3P + N - - - 14 x 51 mm - Yes 32 A - Shroud DIN Rail - -