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 Stock No. 136-5277
BrandRS PRO
PHP9,570.31
Each
units
6NO - 6 - - 6PST - - - - 63 A 3 - Wall Mount
RS Stock No. 707-6177
Mfr. Part No.2CSM204703R1801
BrandABB
PHP705.80
Each
units
- - DP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 381-5726
Mfr. Part No.5560S
PHP747.00
Each
units
- - DP - Sentry - - - - - 63 A - Tunnel -
RS Stock No. 707-6146
Mfr. Part No.2CSM200923R1801
BrandABB
PHP321.30
Each
units
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 708-1756
Mfr. Part No.GS2JB3
PHP11,128.09
Each
units
- - 3P - - - - A4 - Yes 100 A ac, 100 A dc 3 Wire Lead DIN Rail
RS Stock No. 707-6158
Mfr. Part No.2CSM200883R1801
BrandABB
PHP1,078.23
Each
units
- - DP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 762-2641
Mfr. Part No.1SCA022719R0250
BrandABB
PHP46,481.17
Each
units
- - 3P - - - - 0 → 2 500A Yes 400 A 3 - DIN Rail
RS Stock No. 707-6168
Mfr. Part No.2CSM204713R1801
BrandABB
PHP705.80
Each
units
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 443-845
Mfr. Part No.DTL250KIT
PHP11,694.61
Each
units
- - 3P - - - - NH - - 250 A 3 - Surface Mount
RS Stock No. 499-7201
Mfr. Part No.78640548 & T0-2-8900/E/EZ-P1(RS499-7201)
BrandEaton
PHP1,375.84
Each
units
- - 4P - - - - gG/gL 20A - 20 A - - Panel Mount
RS Stock No. 686-7385
Mfr. Part No.1SCA108790R1001 - OS20FB12A1
BrandABB
PHP5,935.24
Each
units
- - 3P - - - - A1 - Yes 20 A - Screw DIN Rail
RS Stock No. 238-4827
Mfr. Part No.0 058 21
BrandLegrand
PHP861.45
Each
units
- - SP + N - - - - 10.3 x 25.8 mm - - 16 A 1 Cage DIN rail
RS Stock No. 813-9563
Mfr. Part No.GS2GU3N
PHP29,026.41
Each
units
- - 3 - - - - J 100kA Yes 60 A 3 Cable DIN Rail
RS Stock No. 762-2455
Mfr. Part No.OS32TPN-B
BrandABB
PHP17,295.23
Each
units
- - 3P + N - - - - A2 - - 32 A 3 - Wall Mount
RS Stock No. 727-5838
Mfr. Part No.1SCA022719R0840
BrandABB
PHP48,787.72
Each
units
- - 3P - - - - B1-B4 - Yes 400 A 3 Screw DIN Rail
RS Stock No. 781-3878
Mfr. Part No.3641 4001
BrandSocomec
PHP4,332.20
Each
units
- - 3P + N - - - - A1 - Yes 32 A - Shroud DIN Rail
RS Stock No. 518-7130
Mfr. Part No.3LD2250-0TK13
BrandSiemens
PHP1,927.57
Each
units
- - - - - - - - 10A - 32 A - - Panel Mount
RS Stock No. 813-9572
Mfr. Part No.GS2JU3N
PHP31,594.43
Each
units
- - 3 - - - - J 200kA Yes 100 A 3 Cable DIN Rail
RS Stock No. 608-7564
Mfr. Part No.GK1ET
PHP11,361.54
Each
units
- - 4P - - - - 14 x 51 mm - Yes 50 A - Wire Lead DIN Rail
RS Stock No. 676-3215
Mfr. Part No.GS2K3
PHP17,431.41
Each
units
- - 3P - - - - 22 x 58 mm - Yes 100 A dc, 125 A ac 3 - DIN rail
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