Featured Product: H07RN-F

H07RN-F is a harmonized, heavy duty, flexible, rubber insulated, black neoprene jacketed multi-conductor 750V European cable.  It is recommended for use in electrical equipment under medium mechanical stress, in a dry or damp, indoor or outdoor environment.

H07RN-F is commonly used on equipment in industry works such as boilers, heating plates, hand lamps, electric tools (drills & circular saws), in homework tools and transportable motors or machines at site. Also suitable for fixed installations on plaster, temporary buildings and residential barracks.  H07RN-F is also suitable for direct laying on components and mechanical parts of machines in lifts and cranes. The rubber neoprene jacket is weather and ozone resistant making this cable suitable for outdoor use.

H07RN-F is The Mueller Group’s 410 Series.  We carry sizes 17AWG thru 500MCM with cores #1-7.   Download the spec here and contact The Mueller Group to request a quote.

Featured Product: SIWO-KUL

Si – Silicone Rubber Insulation 
W – Temperature Resistant
O – Oil Resistant
K – Overall Protective Braid
UL – Varnish Coating over Braid

SIWO-KUL is a very flexible single core connection cable.  It is manufactured in the voltage range of 1.1kV, 3.3-4.2kV, 6.6-7.2kV and 13.8-15.0kV.  The operating temperature  for continuous service extends from -55º C up to +180º C.  The different voltages of SIWO-KUL cables are signified by the color of the overall varnished protective braid.  1.1kV is yellow, 3.3-4.2kV is red, 6.6-7.2kV is gray and 13.8-15.0kV is black.

The use of silicone rubber, a high grade corona resistant insulation material, gives the cable excellent dielectric strength.  The braided synthetic yarn cove ring, which is applied directly over the insulation, gives the cable excellent  mechanical protection by maintaining good flexibility. The varnishing of the braiding results in good anti-friction properties, high abrasion resistance and excellent chemical resistance against transformer oil, light fuel oils and most types of cleaning agents.

Featured Product: H05Z-K / H07Z-K

H05Z-K/H07Z-K is a standard harmonized halogen-free European, flexible single- conductor lead wire available in a variety of colors.

This class-5, lead wire is recommended for wiring of lighting fixtures, appliances and units where valuable assets are to be protected from future damage of fire, smoke and corrosive gas.  H05Z-K/H07Z-K is designed for the internal wiring of switchboards and distributor boards with working voltage of up to 750 volts.  Due to the low smoke, zero halogen nature of the product, it is suitable to be installed on, in or beneath plaster and in closed installation ducts.

The Mueller Group  carries 20, 18 &17 AWG as H05Z-K (300/500v) and 16 AWG & larger as H07Z-K (450/750v).  Both are part of our 320 Series.

Click here to download the spec for this product line and call or email

The Mueller Group for a quote.

Understanding Gauge Size

Gauge size is a specification that is usually clearly called out for a needed cable.  However, it can be difficult to understand what exactly it is.  The most simple answer is that it is the cross sectional area of conductors, either solid or stranded.  In the United States and most of North America, this is labeled as AWG (American Wire Gauge).  In most other countries it is denoted by MM2.  It affects the resistance and current-carrying capacity of a cable.

One of the more confusing aspects of gauge size is that as AWG size decreases from 40 to 4/0, MM2 actually increases, from 0.00501 to 107.  To see the complete AWG to MM2 conversion chart click here.  The other confusing part of understanding gauge size is that when the cross-sectional area (MM2) of a wire is doubled, the AWG will decrease by 3. (i.e., Two No. 14 AWG wires have about the same cross-sectional area as a single No. 11 AWG wire.)

Occasionally, we find a required cable is out of stock or otherwise unavailable.  When this happens we look to other options.  If a 6 AWG cable is required, a 4 AWG may be suitable depending on the physical size constraints and resistance required.  Contact The Mueller Group to find the right cable for your application.

What is Low Smoke, Zero Halogen Cable?

Having a cable that is low smoke, zero halogen is common in many European applications.  It seems like a simple requirement to have, but why is it necessary?  Let’s first start with what is a halogen?  It is a class of chemical element that is highly reactive.  The elements that are most commonly found in wire and cable are chlorine, fluorine, and bromine and are used as an additive in the jacket. In the presence of fire, the wire and cables release hazardous gases that that can cause serious health problems and in large doses lead to death.

The original application for Low Smoke, Zero Halogen products was on offshore marine platforms and shipboards due to the confined spaces.  This is why they are more popular in Europe; where the distance between a manufacturing facility and local village is not very far.  Should there be a fire at the facility with halogen cables present, the entire village can feel the effects.

While there are obvious reasons that low smoke, zero halogen cables are necessary, they do have some drawbacks.  The largest is that they need to be replaced more often due to a higher rate of cracking and are more susceptible to water and oil absorption.

The Mueller Group stocks and has access to a number of cables in various constructions that are available low smoke and halogen free.  Let us help you determine the correct cable for your application.