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. 518-7152
Mfr. Part No.3LD2164-1GP51
BrandSiemens
TWD1,798.00
Each
units
3 25 A - - Enclosed - NO/NC 9.5 kW IP65 Yes 690 V ac Yes 3 640 A
RS Stock No. 518-6733
Mfr. Part No.3LD2064-0TB53
BrandSiemens
TWD1,290.00
Each
units
3 16 A - - Enclosed - - 7.5 kW IP65 Yes 690 V ac - 3 6000 V
RS Stock No. 518-6660
Mfr. Part No.3LD2022-0TK11
BrandSiemens
TWD795.00
Each
units
3 16 A - - Panel Mount - - 7.5 kW IP65 Yes 690 V ac - 3 340 A
RS Stock No. 518-7427
Mfr. Part No.3LD2704-0TK53
BrandSiemens
TWD2,852.00
Each
units
3 100 A - - Panel Mount - - 37 kW IP65 Yes 690 V ac - 3 6000 V
RS Stock No. 518-6878
Mfr. Part No.3LD2222-0TK13
BrandSiemens
TWD1,052.00
Each
units
3 32 A - - Panel Mount - - 11.5 kW IP65 Yes 690 V ac - 3 6000 V
RS Stock No. 518-7281
Mfr. Part No.3LD2504-0TK53
BrandSiemens
TWD1,877.00
Each
units
3 63 A - - Panel Mount - - 22 kW IP65 Yes 690 V ac - 3 6000 V
RS Stock No. 518-6755
Mfr. Part No.3LD2064-1GP51
BrandSiemens
TWD1,621.00
Each
units
3 16 A - - Enclosed - NO/NC 7.5 kW IP65 Yes 690 V ac Yes 3 340 A
RS Stock No. 151-1223
Mfr. Part No.5TL1163-1
BrandSiemens
TWD701.00
Each
units
1 63 A - - DIN Rail 5TL1 NO - - - 250 V - - 0.196 kA
RS Stock No. 518-6676
Mfr. Part No.3LD2022-0TK13
BrandSiemens
TWD795.00
Each
units
3 16 A - - Panel Mount - NO/NC 7.5 kW IP65 Yes 690 V ac - 3 6000 V
RS Stock No. 518-7483
Mfr. Part No.3LD2804-0TK51
BrandSiemens
TWD3,619.00
Each
units
3 125 A - - Panel Mount - - 45 kW IP65 Yes 690 V ac - 3 2000 A
RS Stock No. 151-1226
Mfr. Part No.5TL1192-3
BrandSiemens
TWD1,268.00
Each
units
1 - - - DIN Rail 5TL1 - - - - - - - -
New
RS Stock No. 196-3553
Mfr. Part No.3LD21641TC53
BrandSiemens
TWD5,101.00
Each
units
4 25 A - Sentron DIN Rail 3LD - 9.5 kW IP65 - 400 V - - 500 V
RS Stock No. 518-6856
Mfr. Part No.3LD2203-0TK53
BrandSiemens
TWD1,061.00
Each
units
3 32 A - - Panel Mount - - 11.5 kW IP65 Yes 690 V ac - 3 6000 V
RS Stock No. 874-4161
Mfr. Part No.3VA1112-1AA36-0AA0
BrandSiemens
TWD9,254.00
Each
units
3 125 A - Sentron DIN Rail 3VA - 85 kW IP40 - 500 V dc, 690 V ac - - 125 A
New
RS Stock No. 196-3557
Mfr. Part No.3LD25651TC53
BrandSiemens
TWD7,916.00
Each
units
4 63 A - Sentron DIN Rail 3LD - 22 kW IP65 - 400 V - - 500 V
RS Stock No. 151-1235
Mfr. Part No.5TL1692-0
BrandSiemens
TWD7,269.00
Each
units
3 125 A - - DIN Rail 5TL1 3NO - - - 440 V - - 0.375 kA
RS Stock No. 518-6840
Mfr. Part No.3LD2164-1GP53
BrandSiemens
TWD1,798.00
Each
units
3 25 A - - Enclosed - NO/NC 9.5 kW IP65 Yes 690 V ac Yes 3 6000 V
RS Stock No. 518-6834
Mfr. Part No.3LD2164-0TB53
BrandSiemens
TWD1,404.00
Each
units
3 25 A - - Enclosed - - 9.5 kW IP65 Yes 690 V ac - 3 6000 V
RS Stock No. 518-7354
Mfr. Part No.3LD2504-0TK51
BrandSiemens
TWD1,849.00
Each
units
3 63 A - - Panel Mount - - 22 kW IP65 Yes 690 V ac - 3 1260 A
RS Stock No. 518-6698
Mfr. Part No.3LD2164-0TB51
BrandSiemens
TWD1,404.00
Each
units
3 25 A - - Enclosed - - 9.5 kW IP65 - 690 V ac - 3 640 A