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. 775-4098
Mfr. Part No.1SCA104934R1001
BrandABB
HK$756.00
Each
units
4 40 A - - DIN Rail - 4NO - - - - Yes 3 -
RS Stock No. 775-4105
Mfr. Part No.1SCA105019R1001
BrandABB
HK$2,300.00
Each
units
4 100 A - - DIN Rail - 4NO - - - - Yes 3 -
RS Stock No. 686-7290
Mfr. Part No.1SCA105033R1001
BrandABB
HK$776.55
Each
units
3 125 A - - DIN Rail - - 45 kW IP20 - 750 V ac - 3 2.5 kA
RS Stock No. 686-7266
Mfr. Part No.1SCA104902R1001
BrandABB
HK$189.93
Each
units
3 - - - DIN Rail - - 11 kW IP20 - 750 V ac - - -
RS Stock No. 686-7278
Mfr. Part No.1SCA105332R1001
BrandABB
HK$356.86
Each
units
3 63 A - - DIN Rail - - 22 kW IP20 - 750 V ac - 3 1 kA
RS Stock No. 282-0862
Mfr. Part No.S426KN-A
BrandABB
HK$926.37
Each
units
4 63 A - - - - - 26 kW IP65 - - - 3 -
RS Stock No. 922-0878
Mfr. Part No.ONE20M2Y
BrandABB
HK$156.08
Each
units
2 20 A - - Panel Mount ONE20 - - - - 240 V - - -
RS Stock No. 727-1486
Mfr. Part No.2CMA142435R1000
BrandABB
HK$830.59
Each
units
2 25 A - - Enclosed - - 7.5 kW IP65 - 400 V ac - 1 690 V ac
RS Stock No. 686-7329
Mfr. Part No.1SCA104940R1001
BrandABB
HK$267.17
Each
units
3 - - - Panel Mount - - 11 kW IP20 - 750 V ac - - -
RS Stock No. 841-2634
Mfr. Part No.OTDC16F2
BrandABB
HK$400.80
Each
units
2 16 A - - DIN Rail - 2NO+2NO - IP20 - 660 V dc - - -
RS Stock No. 686-7269
Mfr. Part No.1SCA104857R1001
BrandABB
HK$167.65
Each
units
3 - - - DIN Rail - - 9 kW IP20 - 750 V ac - - -
RS Stock No. 922-0890
Mfr. Part No.ONE20M4Y
BrandABB
HK$208.51
Each
units
4 20 A - - Panel Mount ONE20 - - - - 415 V - - -
RS Stock No. 331-6493
Mfr. Part No.S37K5N-A
BrandABB
HK$279.37
Each
units
3 25 A - - - - - 9 kW IP65 - - - 3 -
RS Stock No. 762-2436
Mfr. Part No.OT160TPN-B
BrandABB
HK$5,470.00
Each
units
3 + N 160 A - - Enclosed - - - IP65 Yes 415 V ac - 3 -
RS Stock No. 686-7281
Mfr. Part No.1SCA105798R1001
BrandABB
HK$324.61
Each
units
3 80 A - - DIN Rail - - 37 kW IP20 - 750 V ac - 3 1 kA
RS Stock No. 922-0871
Mfr. Part No.ONE20M2W
BrandABB
HK$159.08
Each
units
2 20 A - - Panel Mount ONE20 - - - - 240 V - - -
RS Stock No. 175-5090
Mfr. Part No.SD203/25
BrandABB
HK$454.56
Each
units
3 25 A - Pro M Compact DIN Rail SD203 3NO - IP20, IP40 Yes 440 V ac Yes - -
RS Stock No. 922-0874
Mfr. Part No.ONE20M2G
BrandABB
HK$159.08
Each
units
2 20 A - - Panel Mount ONE20 - - - - 240 V - - -
RS Stock No. 175-5091
Mfr. Part No.SD203/32
BrandABB
HK$488.96
Each
units
3 32 A - Pro M Compact DIN Rail SD203 3NO - IP20, IP40 Yes 440 V ac Yes - -
RS Stock No. 762-2442
Mfr. Part No.OT200FP-B
BrandABB
HK$6,330.00
Each
units
4 200 A - - Enclosed - - - IP65 Yes 415 V ac - 3 -