Magnacable Mineral Insulated Cable

Flexible yet secure, Magnacables are quickly becoming the new standard of wiring in hazardous locations. With the use of Magnacable Mineral Insulated Cable, you not only eliminate the safety concerns of conduit and wire installations, but also eliminate the cost of additional material. Examples of this are the elimination of having to use pull boxes, unions, grounding wires, conduit seals, and other fittings. Magnacables are pressure tested to 2000 PSI and offer superior performance by blocking the passage of gases, vapors, liquids and flames. Magnacable eliminates pressure build-up and confines any exploding gases to their defined area. In contrast, if a conduit seal fails, gas or liquids can leak: a main reason why many companies require single or double conduit seals in hazardous areas (Class 1/Div 1) and seals to be x-rayed and inspected on an annual basis. Conduit seals must also be placed within 18” of the arcing device or instrument to be connected to the conduit. Magnacable assemblies are exempt from these requirements and are UL approved for use in Class I, groups B, C and D, Division I hazardous areas, also meeting NEC requirements.

mineral insulated cable graphicMagnacable advantages:

  • Fire/Heat Resistant
  • Waterproof
  • Radiation Resistant
  • Temperature Stable
  • Custom Lengths Available

What are our Magnacable Mineral Insulated Cables made from?

Our Magnacables are carefully assembled from a highly conductive copper: ASTM B4 or B5; insulated with compressed magnesium oxide powder; seamless phosphorous deoxidized copper sheathing; maximum continuous operating temperature of 250° C, working voltages of 0-300 volts AC/DC and 0-600 volts AC/DC; factory test voltage 1500 volts RMS (300 volt cable) and 2500 volts RMS (600 volt cable); a power factor of 0.1%; Dielectric strength 70 volts/ml at 475° C.

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magnacable mineral insulated cable

Magnacable Mineral Insulated Cable Specification Chart


600 Volt Cables, 2-Hour Fire Resistive, Copper Sheath, Copper Conductor, UL Listed

Conductor SizeAWG Size90° C Current Rating (Amperes)Nominal** Length of Coil (Feet)Cable* Reference NumberApproximate Weight Per 1000 Feet (LBS)Gland Connector Thread Size (NPT)
Single Conductor162434291/16-215841/2"
143530091/14-230981/2"
124026491/12-2461171/2"
105519351/10-2771541/2"
88016881/8-2981791/2"
610513091/6-3402361/2"
41409091/4-4023321/2"
31657291/3-4494093/4"
21907391/2-4494443/4"
12206071/1-4964923/4"
1/02605561/0-5126013/4"
2/03004332/0-5807713/4"
3/03503943/0-6219393/4"
4/04053274/0-68411281"
250 kcmil4552751/250-74613411"
350 kcmil5703171/350-83416751-1/4"
500 kcmil7002211/500-100024031-1/4"
Two Conductor161812172/16-3401891/2"
142510622/14-3402361/2"
12308762/12-4022751/2"
10407062/10-4493533/4"
8555282/8-5124733/4"
6754002/6-5906633/4"
4953592/4-68410671"
Three Conductor161811203/16-3552101/2"
14259463/14-3872571/2"
12306153/12-4803953/4"
10406213/10-4804193/4"
8554113/8-5906333/4"
6753653/6-6217383/4"
4952533/4-74610651"
Four Conductor1618/149944/16-3872541/2"
1425/206544/14-4653663/4"
1230/246394/12-4653763/4"
1040/323974/10-5906063/4"
855/444034/8-5906583/4"
675/602634/6-73010081"
Seven Conductor1618/136814/16-4493383/4"
1425/185617/14-4964283/4"
1230/214717/12-5435283/4"
1040/283637/10-6217161"

300 Volt Twisted Pair Cables, 2-Hour Fire Resistive, Copper Sheath, Copper Conductor, UL Listed

Conductor SizeAWG Size90° C Current Rating (Amperes)Nominal** Length of Coil (Feet)Cable* Reference NumberApproximate Weight Per 1000 Feet (LBS)Gland Connector Thread Size (NPT)
Two Conductor18N/A1225324/198/2T2001/2"
16N/A938364/230/2T3541/2" - 3/4"

Magnacable Mineral Insulated Cable Documentation