Cut Sheet

GBL: Grounding Insulated Bushing
Application
• Used with a locknut to terminate rigid metal conduit or IMC
conduit to a box or enclosure.
Features
• Threaded (NPS) for rigid conduit and IMC.
• Temperature rating 150 °C.
• Low surface friction permits pulling of wires with
virtually no abrasion on the cable insulation.
• Set screw provided with each fi tting locks bushing in any
desired position.
• For use with copper or aluminum grounding conductors.
Material/Finish
• Body: zinc
• Lug: aluminum/tin plated
• Clamping screw: steel/zinc plated
• Set screws: steel/zinc plated
Certifications and Compliances
• UL Standard: 467
• UL Listed: E37337
• CSA Standard: C22.2 No. 41
• CSA Certifi ed: 208044
• NEMA: FB-1
C
B
A
GBL
Trade Size (Inches) Catalog Number
Dimensions in Inches/Millimeters
Wire Range
A
Bushing Diameter
B
Bushing Height
C
Turning Radius w/Lug
1⁄2 GBL-100 1.04/26.4 0.49/12.4 1.36/34.5 4-14
3⁄4 GBL-200 1.28/32.5 0.49/12.4 1.48/37.6 4-14
1 GBL-300 1.53/38.9 0.60/15.2 1.57/39.9 4-14
1-1⁄4 GBL-400 1.89/48.0 0.61/15.5 2.14/54.4 1/0-14
1-1⁄2 GBL-500 2.16/54.9 0.60/15.2 2.26/57.4 1/0-14
2 GBL-600 2.66/67.6 0.60/15.2 2.49/63.2 1/0-14
2-1⁄2 GBL-700 3.23/82.0 0.83/21.1 2.76/70.1 1/0-14
3 GBL-800 3.85/97.8 0.83/21.1 3.07/78.0 1/0-14
3-1⁄2 GBL-900 4.35/110.5 0.83/21.1 3.33/84.6 1/0-14
4 GBL-1000 4.87/123.7 0.83/21.1 3.57/90.7 1/0-14
Commercial Products
COMMERCIAL PRODUCTS: RIGID AND IMC FITTINGS
Visit our website at www.appletonelec.com or contact us at [phone].
© January 2011
1632
Zinc Grounding Type Insulated Bushings
For Rigid Conduit and IMC