Non-Fused Switch Disconnectors

Non-fused switch disconnectors are a safety device designed to power down or isolate a part of a circuit while it is being serviced or maintained. Unlike fused switch disconnectors, they do not use a fuse to break the circuit, instead using either a rotary or knife-blade disconnect. Rotary switches break the circuit by rotation of a lever, while knife-blade switches use a hinge to lift a lever off its slot.

What are non-fused switch disconnectors used for?

Non-fused switch disconnectors are used to isolate circuit breakers, transmission lines and transformers as part of their maintenance process. They are a safety measure and are not intended for use as a regular part of the circuit.

Types of non-fused switch disconnectors

Non-fused switch disconnectors vary in the method of disconnecting that they use, whether rotary or knife-blade. Beyond that, they have differing power, voltage and switch ratings, as well as different maximum current capabilities, which will determine which non-fused switch disconnector you choose.


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Description Price Number of Poles Maximum Current Model Number Range Mounting Type Series Normal State Configuration Power Rating IP Rating Accepts Padlocks Voltage Rating Auxiliary Contacts Available Electrical Phase Switch Rating
RS Stock No. 775-4094
Mfr. Part No.OT25F4C
BrandABB
SGD146.57
Each
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4 25 A - - DIN Rail - 4NO - - - - Yes 3 -
RS Stock No. 841-2656
Mfr. Part No.1SCA125822R1001
BrandABB
SGD410.27
Each
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2 100A - - Panel Mount - 2NO+2NC - - - - - - -
RS Stock No. 775-4105
Mfr. Part No.1SCA105019R1001
BrandABB
SGD423.33
Each
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- - - - - - - - - - - - - -
RS Stock No. 686-7281
Mfr. Part No.1SCA105798R1001
BrandABB
SGD71.75
Each
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3 80A - - - - - 37kW IP20 - 750V ac - 3 1kA
RS Stock No. 775-4108
Mfr. Part No.1SCA105369R1001
BrandABB
SGD172.19
Each
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- - - - - - - - - - - - - -
RS Stock No. 775-4120
Mfr. Part No.OT250E04CP
BrandABB
SGD1,412.19
Each
units
- - - - - - - - - - - - - -
RS Stock No. 686-7348
Mfr. Part No.1SCA105499R1001
BrandABB
SGD123.07
Each
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4 80A - - Panel Mount - - 37kW IP20 - 750V ac - 3 1kA
RS Stock No. 841-2684
Mfr. Part No.1SCA125131R1001
BrandABB
SGD168.83
Each
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2 32A - - Panel Mount - 2NO+2NO - - - 660V dc - - -
RS Stock No. 686-7266
Mfr. Part No.1SCA104902R1001
BrandABB
SGD39.21
Each
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3 - - - DIN Rail - - 11 kW IP20 - 750 V ac - - -
RS Stock No. 686-7326
Mfr. Part No.1SCA104900R1001
BrandABB
SGD70.80
Each
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4 - - - Panel Mount - - 9 kW IP20 - 750 V ac - - -
RS Stock No. 775-4114
Mfr. Part No.1SCA105054R1001
BrandABB
SGD504.16
Each
units
- - - - - - - - - - - - - -
RS Stock No. 331-6500
Mfr. Part No.S315KN-A
BrandABB
SGD75.04
Each
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3 40A - - - - - 15kW IP65 - - - 3 -
RS Stock No. 686-7278
Mfr. Part No.1SCA105332R1001
BrandABB
SGD65.91
Each
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3 63A - - - - - 22kW IP20 - 750V ac - 3 1kA
RS Stock No. 841-2647
Mfr. Part No.1SCA121456R1001
BrandABB
SGD97.93
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2 32A - - - - 2NO+2NO - IP20 - 660V dc - - -
RS Stock No. 686-7272
Mfr. Part No.1SCA105365R1001
BrandABB
SGD72.73
Each
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4 - - - DIN Rail - - 22 kW IP20 - 750 V ac - - -
RS Stock No. 282-0856
Mfr. Part No.S418KN-A
BrandABB
SGD110.63
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4 50A - - - - - 18.5kW IP65 - - - 3 -
RS Stock No. 762-2402
Mfr. Part No.OT32TPN-B
BrandABB
SGD302.46
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3 + N 40A - - - - - - IP65 Yes 415V ac - 3 -
RS Stock No. 775-4101
Mfr. Part No.1SCA105418R1001
BrandABB
SGD237.52
Each
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- - - - - - - - - - - - - -
RS Stock No. 762-2442
Mfr. Part No.OT200FP-B
BrandABB
SGD1,486.77
Each
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4 200A - - - - - - IP65 Yes 415V ac - 3 -
RS Stock No. 686-7256
Mfr. Part No.1SCA104811R1001
BrandABB
SGD35.76
Each
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3 - - - DIN Rail - - 7.5 kW IP20 - 750 V ac - - -