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. 781-3783
Mfr. Part No.3631 3002
BrandSocomec
$119.65
Each
units
- - 3P - - - - 10 x 38 mm - Yes 25 A - Shroud DIN Rail
RS Stock No. 398-5285
Mfr. Part No.AAE003-251/Z037
BrandEICHOFF
$12.34
Each
units
- - - - - - - - - - - - - Panel Mount
RS Stock No. 443-839
Mfr. Part No.DTL160KIT
$191.36
Each
units
- - 3P - - - - C00/00, NH 160A - 160 A 3 - Surface Mount
RS Stock No. 707-6146
Mfr. Part No.2CSM200923R1801
BrandABB
$9.36
Each
units
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 676-3233
Mfr. Part No.GS2S3
$2,193.89
Each
units
- - 3P - - - - 3 - - 400 A dc, 630 A ac 3 - DIN rail
RS Stock No. 628-8098
Mfr. Part No.PN2-200
BrandEaton
$641.04
1 Box of 1
Box(es)
- - 3P - PN2 - - - 200A - 250 A - Screw Panel Mount
RS Stock No. 707-6152
Mfr. Part No.2CSM204753R1801
BrandABB
$47.15
Each
units
- - 3P - - - - 10 x 38 mm - - 32 A 3 - -
RS Stock No. 707-6158
Mfr. Part No.2CSM200883R1801
BrandABB
$29.04
Each
units
- - DP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 398-5190
Mfr. Part No.AAE003-251/Z016
BrandEICHOFF
$17.86
Each
units
- - - - - - - - - - - - - Panel Mount
RS Stock No. 513-5729
Mfr. Part No.3841 3021
BrandSocomec
$523.00
Each
units
- - 3P - - - - B1-B2 200A - 200 A 3 - -
RS Stock No. 518-7130
Mfr. Part No.3LD2250-0TK13
BrandSiemens
$73.69
Each
units
- - - - - - - - 10A - 32 A - - Panel Mount
RS Stock No. 710-0570
Mfr. Part No.1SCA115235R1001
BrandABB
$297.15
Each
units
- - 3P - - - - A2, A3 - Yes 63 A 3 Screw DIN Rail
RS Stock No. 781-3897
Mfr. Part No.38416021
BrandSocomec
$728.90
Each
units
- - 4P - - - - B1, B2 - Yes 200 A - Shroud DIN Rail
RS Stock No. 707-6155
Mfr. Part No.2CSM200893R1801
BrandABB
$20.77
Each
units
- - SP + N - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 398-5257
Mfr. Part No.AAE003-251/029
BrandEICHOFF
$17.98
Each
units
- - - - - - - - - - - - - Panel Mount
RS Stock No. 512-9459
Mfr. Part No.OS100GB12P
BrandABB
$376.15
Each
units
- - 3P - - - - BS - Yes 100 A 3 Conduit DIN Rail
RS Stock No. 247-4065
Mfr. Part No.DTL400KIT
$539.02
Each
units
- - 3P - - - - NH02 - - 400 A 3 - Surface Mount
RS Stock No. 707-6177
Mfr. Part No.2CSM204703R1801
BrandABB
$36.19
Each
units
- - DP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 707-6168
Mfr. Part No.2CSM204713R1801
BrandABB
$17.97
Each
units
- - SP - - - - 10 x 38 mm - - 32 A 1 - -
RS Stock No. 443-845
Mfr. Part No.DTL250KIT
$321.82
Each
units
- - 3P - - - - NH - - 250 A 3 - Surface Mount
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