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 stock no. 513-5690
Mfr. Part No.3841 3006
BrandSocomec
R 1,609.58
Each
units
- 3P - - - - 10A - 63 A 3 - - - -
RS stock no. 781-3888
Mfr. Part No.3841 6016
BrandSocomec
R 5,302.63
Each
units
- 4P - - - B1, B2 - Yes 160 A - Shroud DIN Rail - -
RS stock no. 247-4065
Mfr. Part No.DTL400KIT
R 4,922.24
Each
units
- 3P - - - NH02 - - 400 A 3 - Surface Mount - -
RS stock no. 781-3840
Mfr. Part No.3831 6012
BrandSocomec
R 4,847.93
Each
units
- 4P - - - 00 - Yes 125 A - Shroud DIN Rail - -
RS stock no. 499-7201
Mfr. Part No.T0-2-8900/E + EZ-P1
BrandEaton
R 363.79
Each
units
- 4P - - - GG/gL 20A - 20 A - - Panel Mount - -
RS stock no. 707-6146
Mfr. Part No.2CSM200923R1801
BrandABB
R 85.81
Each
units
- SP - - - 10 x 38 mm - - 32 A 1 - - - -
RS stock no. 781-3844
Mfr. Part No.3831 3015
BrandSocomec
R 4,167.09
Each
units
- 3P - - - 00 - Yes 160 A - Shroud DIN Rail - -
RS stock no. 686-7385
Mfr. Part No.1SCA108790R1001 - OS20FB12A1
BrandABB
R 1,435.12
Each
units
- 3P - - - A1 - Yes 20 A - Screw DIN Rail - -
RS stock no. 398-5285
Mfr. Part No.AAE003-251/Z037
BrandEICHOFF
R 113.51
Each
units
- - - - - - - - - - - Panel Mount - -
RS stock no. 781-3847
Mfr. Part No.3831 3012
BrandSocomec
R 3,669.53
Each
units
- 3P - - - 00 - Yes 125 A - Shroud DIN Rail - -
RS stock no. 781-3894
Mfr. Part No.3841 3032
BrandSocomec
R 7,653.12
Each
units
- 3P - - - B1, B2, B3 - Yes 315 A - Shroud DIN Rail - -
RS stock no. 443-839
Mfr. Part No.DTL160KIT
R 1,327.36
Each
units
- 3P - - - C00/00, NH 160A - 160 A 3 - Surface Mount - -
RS stock no. 727-5838
Mfr. Part No.1SCA022719R0840
BrandABB
R 12,661.66
Each
units
- 3P - - - B1-B4 - Yes 400 A 3 Screw DIN Rail - -
RS stock no. 238-4861
Mfr. Part No.0 058 24
BrandLegrand
R 262.31
Each
units
- SP + N - - - 10.3 x 38 mm - - 32 A 1 Cage DIN rail -5°C +40°C
RS stock no. 781-3825
Mfr. Part No.3831 3006
BrandSocomec
R 1,830.48
Each
units
- 3P - - - 00C - Yes 63 A - Shroud DIN Rail - -
RS stock no. 513-5735
Mfr. Part No.3841 3024
BrandSocomec
R 6,736.91
Each
units
- 3P - - - - 10A - 250 A 3 - - - -
RS stock no. 512-9459
Mfr. Part No.OS100GB12P
BrandABB
R 3,596.65
Each
units
- 3P - - - BS - Yes 100 A 3 Conduit DIN Rail - -
RS stock no. 762-2648
Mfr. Part No.1SCA022825R2830
BrandABB
R 21,119.60
Each
units
- 3P - - - 3 800A Yes 630 A 3 - DIN Rail - -
RS stock no. 710-0582
Mfr. Part No.1SCA114613R1001
BrandABB
R 3,059.81
Each
units
- 3P - - - A2, A3, A4 - Yes 100 A 3 - DIN Rail -40°C +40°C
RS stock no. 513-5684
Mfr. Part No.3841 3003
BrandSocomec
R 945.01
Each
units
- 3P - - - - 10A - 32 A 3 - - - -