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nVent ERIFLEX Flexibar, Tinned Copper

FLEX3MTC6X45X1 (505551)


  • Thin layers of tinned electrolytic copper formed into a stack
  • Insulated by high-resistance, self-extinguishing PVC with less than 20% contact with conductor for high flexibility
  • Easily bent, folded, and twisted, improving assembly flexibility, shortening connections, and decreasing footprint
  • Dramatically smaller and more flexible than comparable cable based on ampacity
  • Better power density than cable with lower skin effect ratio
  • Connections made by punching and bolting directly through the copper laminates, clamping onto the end of the nVent ERIFLEX Flexibar, or welding using nVent ERICO Cadweld
  • No lugs needed, reducing installation time and improving resistance to vibration
  • Weight savings and material savings compared to wire alternatives
  • Reduces total installation cost
  • Traceability codes and designation part numbers printed on insulation
  • 100% production dielectric tested
  • UL 758 Appliance Wiring Material requirements for Cold Bend testing at -40°C and -50°C (-40°F and -58°F)
  • EAC compliant
  • RoHS compliant


Part Number FLEX3MTC6X45X1
Article Number 505551
Typical Application Current Rating 800 A
Finish Tinned
Material Copper
Dielectric Strength 20 kV/mm
Flammability Rating UL® 94V-0
Insulation Elongation 370 %
Insulation Thickness 0.08"
Nominal Voltage, UL/CSA/IEC 1,000 VAC
1,500 VDC
Working Temperature -58 to 221 °F
Forming Temperature 32 – 131 °F
Certification Details UL® 67
UL® 758
Complies With IEC® 60439.1
IEC® 61439.1
IEC® 61439.1 Class II
IEC® 60695-2-11 (Glow Wire Test 960 °C)
Length (L) 9.84'
∆T 30 K 736 A
∆T 45 K 919 A
∆T 60 K 1,074 A
Conducting Layers (N) 6
A 1.772"
B 0.039"
Cross Section 532.85 kcmil
2 Bar Current Coefficient 1.72
3 Bar Current Coefficient 2.25
Certifications ABS 08-HS365878-2-PDA
Bureau Veritas 02859 BV
CSA 90005
EAC 02941 (Russian Federation)
IEC 61439-1 Class II FLEXIBAR
Standard Packaging Quantity 1 pc
UPC 78285644891
EAN-13 3479775055510
ADMISSIBLE CURRENTS: This table indicates the temperature rise produced by chosen current in the given section. This calculation does not take into account the heat dissipation from the switch gear.
∆T = Temperature of conductors – Internal temperature of panel.
Refer to technical documentation for additional ampacity ratings.

nVent, nVent CADDY, nVent ERICO, nVent ERIFLEX, and nVent LENTON are owned by nVent or its global affiliates. All other trademarks are the property of their respective owners. nVent reserves the right to change specifications without prior notice.

ABS is a registered certification mark of American Bureau of Shipping.
CSA, CSA-US and C-CSA-US are registered trademarks of Canadian Standards Association.
IEC is a registered trademark of the International Electrotechnical Commission.
UL, UR, cUL, cUR, cULus and cURus are registered certification marks of UL LLC.





Bureau Veritas 02859 BV
ACE 14/163/02, 262 KB English
CSA 90005
CSA C22.2 No. 0, CSA C22.2 No. 210
cUR QEUY8.E125470
CSA C22.2 No. 29, CSA C22.2 No. 244
EAC 02941 (Russian Federation)
3.56 MB Русско
IEC 61439-1 Class II FLEXIBAR
IEC 61439-1 (2011), EN 61439-1 (2012), 51 KB English
IEC 61439-1 Class II FLEXIBAR
IEC 61439-1 (2011), EN 61439-1 (2012), 51 KB Français
IEC 61439-1 (2012), 50 KB English
UR QEUY2.E125470


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