United StatesChange

BS-250A Four Pole Insulating Support

BS-250A (551300)


  • Create custom four pole distribution blocks for an electrical distribution system
  • Mounts with screws
  • Protection screen can be fixed using spacers
  • Halogen free
  • RoHS compliant


Part Number BS-250A
Article Number 551300
Material Steel
Glass Fibre Reinforced Polyamide
Finish Electrogalvanized
Max Working Voltage, IEC (Ui) 630 VAC
630 VDC
Working Temperature -40 to 266 °F
Typical Application Current Rating 160 – 250 A
Complies With IEC® 60439.1
IEC® 61439.1
IEC® 60695-2-11 (Glow Wire Test 960 °C)
Flammability Rating UL® 94V-0
Busbar Width 0.59" – 0.79"
Busbar Thickness 0.2"
Depth (D) 1.77"
Height (H) 5.91"
A 5.12"
Screw Diameter (Sc) M6
Unit Weight 0.11 lb
Certifications CE
EAC 8546901000 (Russian Federation)
IEC 61439-1 Busbar Supports
Standard Packaging Quantity 10 pc
UPC 78285687622
EAN-13 3479775513003
Must be used with copper busbars.

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.

IEC is a registered trademark of the International Electrotechnical Commission.
UL, UR, cUL, cUR, cULus and cURus are registered certification marks of UL LLC.




IEC 61439-1 Busbar Supports
IEC 61439-1 (2017), 50 KB English
IEC 61439-1 Busbar Supports
IEC 61439-1 (2017), 51 KB Français