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Kraus & Naimer Solar PV DC Isolation Switch - 2 Pole, 1 String (KG20)

Kraus & Naimer  |  SKU: KG20-T104
including VAT

Delivery / Collection

We offer quick delivery and/or collection on all batteries.


Items for delivery are offered with same day dispatch on orders placed before 2:30pm.

We use professional courier service partners who offer a next day service, and although not guaranteed, many deliveries reach their destination the next day.


Some of our batteries are only available for collection because of the hazardous nature of their contents which are not allowed to be transported by post.

You can collect these items from our store at Unit 2, Camelot Court, Bancombe Road Trading Estate, Somerton, TA11 6SB.

You will receive an email when your order is ready to be collected

We always recommend calling 01458 781726 before coming to collect your order.

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If you see the same branded product advertised anywhere online at a lower price, we will offer our price match promise.

Easy Returns

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

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This high quality, popular solar PV DC isolator switch manufactured by Kraus & Naimer enables you to safely disconnect your solar panels from your system during installation and for any required maintenance.

The insulated enclosure has 2 poles, so it switches both the positive and negative sides of the circuit at the same time, and can be used with a single string of solar panels. Its typical rating is 450V DC, 25A, the door of the enclosure is interlocked so cannot be opened when the handle is in the ON position, and the handle is padlockable in the OFF position for safety whilst carrying out work on the system.

The enclosure is rated for use up to 50°C and has an ingress protection rating of IP66/67. There are knock-out tabs situated in the rear, top, bottom and sides of the enclosure to enable multiple cable-entry options.

This switch suits a wide variety of solar applications including all campervan, motorhome, caravan, boat, marine and most off-grid and domestic installations (check voltage/current ratings to confirm suitability).



  • Switch type: DC Switch-Disconnector
  • Voltage (DC)/current ratings: 450V/25A,  500V/21A, 650V/20A, 800V/18A, 920V/11A
  • No. solar panel strings: 1
  • No. poles: 2
  • Enclosure material: Polycarbonate
  • Enclosure colour: Grey RAL7035 with black handle
  • Interlocked door: Yes (cannot be opened when in ON position)
  • Padlockable handle: Yes (in OFF position)
  • Protection class: IP66/67
  • Operating temperature range: Up to 50°C
  • Max. terminal cable size: 6mm²
  • Overall dims: 160 (H) x 85 (W) x 82 (D) mm
  • Manufacturer's part number: KG20 T104/D-P003 KL51V

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    Kraus & Naimer

    Kraus & Naimer Solar PV DC Isolation Switch - 2 Pole, 1 String (KG20)






    160 x 85 x 82 mm (HxWxD)







    Life Cycles


    Terminal Layout


    Terminal Type


    Cold Cranking Amps


    Marine Cranking Amps



    1 Year







    Output Power


    Charge Current

    View product