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MK 45A 440V Isolator Switch IP66 Weatherproof

Isolator Model M4419
Brand MK

M4419 isolation breaker is MK Electric’s electrical equipment which is designed to be rugged and resistant to environmental changes. Unique design that meets safety and reliability standards.

Current intensity: 45A.

Number of poles: 2 poles.

Function to disconnect the circuit without electrical load, isolate the power source.

Function switch mode ON, OFF when downloading.

Emergency switching function, function switch.

Producing according to ISO 9000 quality standards.

Standard waterproof and dust: IP66 (suitable for indoor and outdoor use).

Easy to install and use.

Materials: Polycarbonate plastic shell.

Color: Gray

16mm2 (Rigid stranded cable)

2 x 25mm cable entry top and bottom.
Supplied with 2 x 25mm conduit adaptors.
4 x 20mm, 2 x 25mm knockouts for rear cable entry.

IEC 60947-3: 1999

BS EN 60947-3:1999



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Switch – isolators from MK Electric are sturdily built to withstand more than just vagaries of the weather. The entire range of MK isolating switches are exclusively designed to surpass uncompromising standards of total safety and reliability.

The MK switch – Isolators range is yet another product line from MK Electric the industry leader in product and safety standards for over 70 years.

When safety and quality matter most, choose MK. It’s the logical choice.


MK Switch – isolators are uniquely designed to be compact and neat in appearance – couple with MK’s renowned standard of quality, this allowed the product to be placed unobtrusively in any outdoor location, no matter how exposed it is to the harsh effects of extreme heat, dust, rain and humidity.

The polycarbonate front cover has been deliberately chosen to withstand the rigours of outdoor environments.


MK  switch – isolators are manufactured according to the strictest MK quality standards and the ISO 9000 quality system requirements.

All models are weatherproof as per IP66 and tested to IEC 60947-3 and BS EN 60947-3.

An important point to note is that MK switch – isolators are independently tested by renowned independent test authority, beside our own in-house testing.


Easy installation is one of the key features and benefits offered by MK. Cable entry knockouts are provided at the top and bottom of the enclosure. They are suitable for use with any standard range of cable/conduit accessories.

Capos for mounting screws are supplied so as to enhance the weatherproof feature. Screw caps are also provided to prevent dust from collecting in the screw recesses and are designed to flush with the surface giving a good aesthetic look of a screwless switch – isolator.


MK range of switch – isolators are suitable for purpose of:

  • Isolating
  • Switching ON & OFF on-Load
  • Emergency switching
  • Functional switching

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