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
$310.50
Each
units
6NO - 6 - - 6PST - - - - 63 A 3 - Wall Mount
RS Stock No. 518-7130
Mfr. Part No.3LD2250-0TK13
BrandSiemens
$81.79
Each
units
- - - - - - - - 10A - 32 A - - Panel Mount
RS Stock No. 398-5235
Mfr. Part No.AAE003-251/Z038
BrandEICHOFF
$14.44
Each
units
- - - - - - - - - - - - - Panel Mount
RS Stock No. 443-845
Mfr. Part No.DTL250KIT
$354.00
Each
units
- - 3P - - - - NH - - 250 A 3 - Surface Mount
RS Stock No. 535-0912
Mfr. Part No.MGFA0633C
$913.99
Each
units
- - 3P + N - - - - A2, A3, BA063 - - 63 A - - -
RS Stock No. 443-839
Mfr. Part No.DTL160KIT
$212.41
Each
units
- - 3P - - - - C00/00, NH 160A - 160 A 3 - Surface Mount
RS Stock No. 628-8098
Mfr. Part No.266006 & PN2-200
BrandEaton
$711.56
1 Box of 1
Box(es)
- - 3P - PN2 - - - 200A - 250 A - Screw Panel Mount
RS Stock No. 710-0576
Mfr. Part No.1SCA114610R1001
BrandABB
$244.19
Each
units
- - 4P - - - - A2, A3 - Yes 32 A 3 Screw DIN Rail
RS Stock No. 762-2648
Mfr. Part No.1SCA022825R2830
BrandABB
$2,364.33
Each
units
- - 3P - - - - 3 800A Yes 630 A 3 - DIN Rail
RS Stock No. 247-4065
Mfr. Part No.DTL400KIT
$602.66
Each
units
- - 3P - - - - NH02 - - 400 A 3 - Surface Mount
RS Stock No. 534-5112
Mfr. Part No.MGFA0201C
$292.10
Each
units
- - SP + N - - - - A1, A2, NITD20 - - 20 A - - -
RS Stock No. 676-3233
Mfr. Part No.GS2S3
$2,403.24
Each
units
- - 3P - - - - 3 - - 400 A dc, 630 A ac 3 - DIN rail
RS Stock No. 762-2641
Mfr. Part No.1SCA022719R0250
BrandABB
$1,407.03
Each
units
- - 3P - - - - 0 → 2 500A Yes 400 A 3 - DIN Rail
RS Stock No. 238-4833
Mfr. Part No.0 058 22
BrandLegrand
$32.03
Each
units
- - SP + N - - - - 8.5 x 31.5 mm - - 20 A 1 Cage DIN rail
RS Stock No. 727-5790
Mfr. Part No.1SCA022750R0620
BrandABB
$855.03
Each
units
- - 3P + N - - - - B1-B2 - Yes 200 A 3 Screw DIN Rail
New
RS Stock No. 201-0754
Mfr. Part No.CPD1254
BrandContactum
$35.21
Each
units
Closed Fused 4 Incomer CPD - - - 125A - 125 A - - -
New
RS Stock No. 204-1582
Mfr. Part No.T0-1-8200/SE1
BrandEaton
$265.66
Each
units
1 NO Fused 1 ON-OFF Switch T0 - Enclosed - 20A - 6 kA - - -
RS Stock No. 762-2616
Mfr. Part No.1SCA115639R1001
BrandABB
$508.63
Each
units
- - 3P - - - - 00, 000 160A Yes 125 A 3 - DIN Rail
RS Stock No. 179-9648
Mfr. Part No.38313016
BrandSocomec
$778.44
Each
units
3P - 3 FUSERBLOC - - - - 160A Yes 160 A - - DIN Rail
RS Stock No. 707-6164
Mfr. Part No.2CSM204723R1801
BrandABB
$66.41
Each
units
- - 4P - - - - 10 x 38 mm - - 32 A 3 - -
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