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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RS-stocknr. 150-118
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- - - - - - - - - - - - - -
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FabrikantKraus & Naimer
106,18 €
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3 25A - - - - NO 7.5kW IP65 Yes 690V ac Yes 3 -
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4 80A - - Panel Mount - - 30kW IP65 Yes 690V ac - 3 -
RS-stocknr. 122-0499
Fabrikantnummer26004017
FabrikantSocomec
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4 160A - SIRCO - SIRCO - 80kW IP20 - 415 V ac, 500V dc - 3 -
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225,23 €
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3 40A - - - - 3NO 15kW IP65 Yes 690V Yes 3 6kV
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RS-stocknr. 393-9901
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FabrikantSiemens
89,73 €
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Aantal stuks
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RS-stocknr. 122-0496
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FabrikantEaton
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