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Adjustable Flat Busbar Support Insulator

SIALP-B (504991)


  • Use with Adjustable Flat Busbar Support Rail to create custom busbar supports
  • Adjusts quickly to accommodate multiple busbar thicknesses
  • High resistance to short-circuit forces
  • Provides excellent electrical protection for equipment
  • Halogen free
  • RoHS compliant


Part Number SIALP-B
Article Number 504991
Material Glass Fibre Reinforced Polyamide
Max Working Voltage, IEC (Ui) 1,000 VAC
1,500 VDC
Working Temperature -40 to 266 °F
Complies With IEC® 60439.1
IEC® 61439.1
IEC® 60695-2-11 (Glow Wire Test 960 °C)
Flammability Rating UL® 94V-0
Busbar Width 1.18" – 4.92"
Busbar Thickness 0.20" – 0.39"
Height (H) 2.76"
A 1.34"
Unit Weight 0.57 lb
Certifications CE
EAC 8546901000 (Russian Federation)
IEC 61439-1 Busbar Supports
Standard Packaging Quantity 12 pc
UPC 78285666633
EAN-13 3479775049915

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