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Switch Fuses - Isolators

Shop electrical isolators at Electrical4Less, including switch fuses, main switches, load switches, rotary isolators, TP&N isolators, changeover switches and electrical cut outs. Electrical isolators are used to safely disconnect power for maintenance, emergency isolation and circuit control in domestic, commercial and industrial installations. Browse the range below to compare sizes, ratings, enclosure types and mounting options.

Fuse Switches

Fuse Switches (17)

Main Switches

Main Switches (41)

Solar DC Isolators

Solar DC Isolators (8)

Rotary Isolators

Rotary Isolators (42)

TP&N Three Phase Isolators

TP&N Three Phase Isolators (15)

Three Phase Fused Switches

Three Phase Fused Switches (42)

Change Over Switches

Change Over Switches (18)

Electrical Cut Outs

Electrical Cut Outs (4)

Showing 1–20 of 175 results

WCED WEC440SP Meter Supply Isolator with Surge ProtectionWCED WEC440SP Meter Supply Isolator with Surge Protection 2

WCED WEC440SP Meter Supply Isolator with Surge Protection
20 In Stock
More available within:
Usually 1 - 2 Working Days
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SKU: WEC440SP
£26.87
Live Electrical LFIS100 Live Electrical Switchfuse With 80A and 100A Fuse Plus Shroud LFIS100 1Live Electrical LFIS100 Live Electrical Switchfuse With 80A and 100A Fuse Plus Shroud LFIS100 2

Live Electrical Switchfuse With 80A and 100A Fuse Plus Shroud LFIS100
13 In Stock
More available within:
Usually 2 - 3 Working Days
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SKU: LFIS100
£12.00
FuseBox SF0100 100A SP&N Single Pole Fused Isolator Switch

FuseBox SF0100 100A SP&N Single Pole Fused Isolator Switch
15 In Stock
More available within:
Usually 2 - 4 Working Days
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SKU: SF0100
£27.50
WCED WEC44100 4 Pole 100A Meter Supply Isolator

WCED WEC44100 4 Pole 100A Meter Supply Isolator
6 In Stock
More available within:
Usually 1 - 2 Working Days
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SKU: WEC44100
£15.17
3 Phase 125A Metal Switch Fuse

WCED WFMS/3P 3 Phase 125A Metal Switch Fuse
15 In Stock
More available within:
Usually 1 - 2 Working Days
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SKU: WFMS/3P
£65.40
Live Electrical LSFS125 3-Phase Metal Switch Fuse BoxLive Electrical LSFS125 3-Phase Metal Switch Fuse Box 2

Live Electrical | LSFS125 | 125A | 3-Phase Metal Switch Fuse Box | without Fuses
11 In Stock
More available within:
Usually 2 - 3 Working Days
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SKU: LSFS125
£56.58
WCED Twin Screw 100A DP Metal Meter Isolator

WCED Twin Screw 100A DP Metal Meter Isolator
23 In Stock
More available within:
Usually 1 - 2 Working Days
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SKU: MEC2100
£12.47
Live Electrical RI432 4 Pole 32A IP65 Rotary Isolator Switch

Live Electrical RI432 4 Pole 32A IP65 Rotary Isolator Switch
1 In Stock
More available within:
Usually 2 - 3 Working Days
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SKU: RI432
£12.30
Live Electrical MS2100 100A Double Pole Main Switch

Live Electrical MS2100 100A Double Pole Main Switch
2 In Stock
More available within:
Usually 2 - 3 Working Days
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SKU: MS2100
£4.37
FuseBox IT1002 FuseBox IT1002 100A Double Main Switch 1FuseBox IT1002 FuseBox IT1002 100A Double Main Switch 2

FuseBox IT1002 100A Double Main Switch
5 In Stock
More available within:
Usually 2 - 4 Working Days
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SKU: IT1002
£4.15
Garo Meter Supply Isolator with Surge ProtectionGaro GSP2100M Meter Supply Isolator with Surge Protection

Garo GSP2100M Meter Supply Isolator with Surge Protection
2 In Stock
More available within:
Usually 2 - 3 Working Days
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SKU: GPS2100M
£19.16
Live Electrical PEN2100D 100A 2 Pole Mains Supply Isolator and Enclosure 

Live Electrical PEN2100D 100A 2 Pole Mains Supply Isolator and Enclosure 
9 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: PEN2100D
£9.02
Live Electrical CS3P32 Live Electrical 3 Pole 32A Changeover Switch 1Live Electrical CS3P32 Live Electrical 3 Pole 32A Changeover Switch 2

Live Electrical CS3P32 3 Pole 32A Changeover Switch
8 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: CS3P32
£23.90
Live Electrical MS2100D 2 Pole 100A Double Terminal Main Switch

Live Electrical MS2100D 2 Pole 100A Double Terminal Main Switch
8 In Stock
More available within:
Usually 2 - 3 Working Days
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SKU: MS2100D
£5.49
Fusebox SF0100RA Fused Switch With 100A 100MA Type A RCD

Fusebox SF0100RA 100A Fused Switch With 100mA Type A RCD
3 In Stock
More available within:
Usually 2 - 4 Working Days
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SKU: SF0100RA
£58.45
WCED WME44100 4 Pole 100A Metal Meter Isolator

WCED WME44100 4 Pole 100A Metal Meter Isolator
7 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: WME44100
£15.90
FuseBox E2PMST2 100A Meter Isolator Switch with SPD

FuseBox | E2PMST2 | DP 100A | Electricity Meter Isolator Switch with Type 2 SPD
3 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: E2PMST2
Quantity Discount
Quantity Price
1 £27.99
2+ £27.71
4+ £27.43
£27.99
WCED WIS2100 100A 2P Double Screw Terminal Main Switch

WCED WIS2100 100A 2P Double Screw Terminal Main Switch
5 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: WIS2100
£7.25
Live Electrical RI463 63A Weatherproof Rotary Isolator Switch 4 Pole 1Live Electrical RI463 63A Weatherproof Rotary Isolator Switch 4 Pole 2

Live Electrical RI463 4 Pole 63A IP65 Rotary Isolator Switch
5 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: RI463
£17.99
Live Electrical CS3P20 Live Electrical 3 Pole 20A Changeover Switch 1Live Electrical CS3P20 Live Electrical 3 Pole 20A Changeover Switch 2

Live Electrical CS3P20 3 Pole 20A Changeover Switch
2 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: CS3P20
£17.90

Showing 1–20 of 175 results

Electrical Isolators for Safe Power Isolation

Electrical isolators are used to disconnect a circuit or item of equipment from the electrical supply. They are commonly installed where safe local isolation is required for maintenance, inspection, emergency switching or equipment control.

This category includes switch fuses, main switches, load switches, rotary isolators, TP&N isolators, changeover switches and electrical cut outs. The correct isolator should be selected based on the supply type, current rating, number of poles, enclosure rating and the equipment being isolated.

Choosing the Right Electrical Isolator

When choosing an electrical isolator, check the current rating, voltage rating, pole configuration and whether the unit is suitable for indoor or outdoor use. Some installations may require a fused isolator, while others may require a rotary isolator, main switch or changeover switch depending on the circuit design.

  • Use the correct current rating for the connected load.
  • Check whether single-phase or three-phase isolation is required.
  • Choose a suitable enclosure for the installation environment.
  • Confirm whether fused or non-fused isolation is needed.
  • Follow the manufacturer’s instructions and current wiring regulations.

Common Types of Isolator Switches

Switch Fuses

Switch fuses combine isolation with fuse protection and are often used for submains, distribution circuits and equipment supplies where fused protection is required.

Main Switches

Main switches are used to isolate circuits or sections of an installation and are commonly found in consumer units, distribution boards and control panels.

Rotary Isolators

Rotary isolators provide manual switching and isolation for machinery, motors, HVAC equipment, outdoor equipment and commercial installations.

TP&N Isolators

TP&N isolators are used for three-phase and neutral supplies, making them suitable for commercial and industrial electrical installations.

Changeover Switches

Changeover switches are used where a supply needs to be switched between two sources, subject to the installation design and equipment requirements.

Related Consumer Units

Some isolators and main switches are used as part of wider circuit protection and distribution board installations. For complete board options, view our main consumer units range and always check compatibility with the installation design and manufacturer requirements.

Installation Notes

Electrical isolators should be selected and installed by a qualified electrician. The installer should confirm the correct rating, cable size, enclosure type, fault protection, earthing arrangement and isolation requirements before installation.

Electrical Isolators FAQs

What is an electrical isolator used for?

An electrical isolator is used to disconnect power from a circuit, item of equipment or section of an installation so that work can be carried out safely.

What is the difference between an isolator and a switch fuse?

An isolator provides switching and isolation. A switch fuse provides isolation and includes fuses for circuit protection, where required by the installation design.

Can electrical isolators be used outside?

Some electrical isolators are suitable for outdoor use, depending on their enclosure rating and installation method. Always check the individual product specification before ordering.

Who should install an electrical isolator?

Electrical isolators should be installed by a qualified electrician who can confirm the correct product type, rating and installation requirements.






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This item may be sourced from our supplier before dispatch.
The lead time shown is an estimate only and is based on the usual supplier timeframe. It is subject to supplier availability and is not a guaranteed delivery date.
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Delivery info

Where an order contains only WCED products that are not available from our shelf stock, it will usually be dispatched directly from WCED. Delivery often takes 1–2 working days, although stock availability, order cut-off times and courier schedules may affect the timing.

For mixed orders containing products from other suppliers, the dispatch arrangement and delivery time may vary, and the order may follow the longest lead time shown.

Delivery info

Orders containing only Live Electrical products that are not available from our shelf stock will usually be dispatched directly from Live Electrical. Delivery is generally completed within 2–3 working days, although stock availability, order cut-off times and courier schedules may affect the timing.

For mixed orders containing products from other suppliers, dispatch arrangements may vary, and the order may follow the longest delivery estimate shown.

In the unlikely event that an item becomes unavailable, we will contact you with the available options, which may include waiting for stock, choosing an alternative product or cancelling the unavailable item for a refund.

Delivery info

If this item is not currently on our shelves, we will order it from FuseBox for delivery to our warehouse. FuseBox does not dispatch directly to our customers, so once the item arrives with us, we will send it on to you as quickly as possible. Many items reach us the next working day, while some may take a little longer. Delivery to you is usually completed within 2–4 working days.

Please note that if your order includes other products with a longer lead time, the complete order may be dispatched once all items are available.

In the unlikely event that an item becomes unavailable, we will contact you with the available options, which may include waiting for stock, choosing an alternative product or cancelling the unavailable item for a refund.

Delivery info

GARO items that are not available from our shelf stock will usually be ordered directly from GARO and dispatched as soon as they arrive with us. Delivery is generally completed within 2–3 working days, although stock availability, order cut-off times and courier schedules may affect the timing.

For mixed orders containing products from other suppliers, dispatch arrangements may vary, and the order may follow the longest delivery estimate shown.

In the unlikely event that an item becomes unavailable, we will contact you with the available options, which may include waiting for stock, choosing an alternative product or cancelling the unavailable item for a refund.

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