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. 900-1825
Mfr. Part No.KEM340UL Y/R
BrandAltech
£65.58
Each
Units
4 40 A - - Panel Mount KEM - - IP65 Yes 600 V ac Yes 3 -
RS Stock No. 900-1841
Mfr. Part No.KER3100UL
BrandAltech
£585.46
Each
Units
3 100 A - - Panel Mount KER - - IP66 Yes 600 V ac Yes 3 -
RS Stock No. 2508749488
Mfr. Part No.KU425N
BrandAltech
£43.32
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2508749494
Mfr. Part No.KU463N
BrandAltech
£47.07
Each
Units
- - - - - - - - - - - - - -