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. 103-8454
Mfr. Part No.T0-3-8401/I1
BrandEaton
HK$310.00
Each
units
3 20 A - - Enclosed T0-3 3NO 6.5 kW IP65 - 690 V - 1, 3 110 A
RS Stock No. 192-1132
Mfr. Part No.1SCA128505R1001
BrandABB
HK$520.12
Each
units
3 23 A - - Enclosed Mount - 2NC, 2NO - IP65 Yes 750 V Yes - -
RS Stock No. 151-1234
Mfr. Part No.5TL1691-1
BrandSiemens
HK$1,634.14
Each
units
3 100 A - - DIN Rail 5TL1 3NO - - - 440 V - - 0.3 kA
RS Stock No. 122-0499
Mfr. Part No.26004017
BrandSocomec
HK$1,456.44
Each
units
4 160 A - - DIN Rail SIRCO - 80 kW - - 415 V ac, 500 V dc - 3 15 kArms
RS Stock No. 790-7488
Mfr. Part No.A9S65491
HK$835.12
Each
units
4 100 A - Acti 9 DIN Rail iSW 4NO - IP20 - 415 V Y - 6 kV
RS Stock No. 790-7416
Mfr. Part No.A9S65140
HK$145.06
Each
units
1 40 A - Acti 9 DIN Rail iSW NO - - - 240 V - - -
RS Stock No. 810-0870
Mfr. Part No.SDDR406EB
HK$1,922.61
Each
units
6 40 A - - Enclosed - NO 18.5 kW IP66 - 440 V Yes 3 800 A
RS Stock No. 176-6783
Mfr. Part No.2CSM202063R1801
BrandABB
HK$316.35
Each
units
3 32 A - - DIN Rail 2CSM - - - - 690 V ac - - -
RS Stock No. 122-0488
Mfr. Part No.22303004
BrandSocomec
HK$1,547.71
Each
units
3 40 A - - DIN Rail SIRCO M - 18 kW - - 400 V ac, 415 V ac - 3 2.3 kArms
RS Stock No. 151-1226
Mfr. Part No.5TL1192-3
BrandSiemens
HK$324.14
Each
units
1 - - - DIN Rail 5TL1 - - - - - - - -
RS Stock No. 192-0922
Mfr. Part No.68211
BrandABB
HK$6,874.63
Each
units
4 250 (Uninterrupted) A XT3D - - - - - - - 500 V dc, 690 V ac - 4 -
RS Stock No. 110-4492
Mfr. Part No.T0-3-15680/I2H/MBS/SVB
BrandEaton
HK$470.46
Each
units
3 + N 20 A - - Enclosed - NO/NC 6 kW IP65 Yes 415 V Yes 3 -
RS Stock No. 775-4111
Mfr. Part No.1SCA022771R7280
BrandABB
HK$7,875.64
Each
units
4 200 A - - DIN Rail - 4NO - - Yes - Yes 3 -
RS Stock No. 714-1824
Mfr. Part No.SDS206EB
HK$1,789.29
Each
units
6 + 2EB Aux 20 A - - Enclosed - 6NO 7.5 kW IP65 Yes 690 V Yes 3 6 kV
RS Stock No. 841-2644
Mfr. Part No.OTDC25F3
BrandABB
HK$900.44
Each
units
3 25 A - - DIN Rail - 3NO+3NO - IP20 - 1 kV dc - - -
RS Stock No. 686-7288
Mfr. Part No.1SCA105004R1001
BrandABB
HK$559.42
Each
units
3 - - - DIN Rail - - 37 kW IP20 - 750 V ac - - -
RS Stock No. 330-7859
Mfr. Part No.P1-32/I2
BrandEaton
HK$437.92
Each
units
3 32 A - - Enclosed - - 18.5 kW IP65 - 240 V dc, 690 V ac - 3 6000 V ac
RS Stock No. 176-6781
Mfr. Part No.2CSM251503R1801
BrandABB
HK$220.40
Each
units
2 32 A - - DIN Rail 2CSM - - - - 690 V ac - - -
RS Stock No. 176-9739
Mfr. Part No.P1-32/EA/SVB-SW
BrandEaton
HK$432.88
Each
units
3 32 A - - Flush Mount - - 15 kW IP65 Yes 690 V ac - 1, 3 640 A
RS Stock No. 828-5307
Mfr. Part No.KH25 T902/GBA002 *KS52
HK$520.98
Each
units
2 25 A - - Enclosed - NO 4 kW, 7 kW IP66, IP67 Yes 220 → 240 V Yes 1 -
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