Cut Sheet

Rigid and Intermediate Metal Conduit Fittings
DIMENSIONS (IN.)
CAT. NO. SIZE A B C
TRIB-50
1
⁄2"
19
⁄32 1
9
⁄32 1
1
⁄16
TRIB-75
3
⁄4"
25
⁄32 1
25
⁄64 1
1
⁄4
TRIB-100 1" 1 1
1
⁄2 1
9
⁄16
TRIB-125 1
1
⁄4 1
5
⁄16 1
5
⁄8 1
59
⁄64
TRIB-150 1
1
⁄2"1
17
⁄32 1
21
⁄32 2
11
⁄64
TRIB-200 2" 1
31
⁄32 1
13
⁄16 2
11
⁄16
TRIB-250 2
1
⁄2"2
23
⁄64 23
1
⁄4
TRIB-300 3" 2
59
⁄64 2
7
⁄32 3
29
⁄32
TRIB-350 3
1
⁄2"3
3
⁄8 2
5
⁄16 4
29
⁄64
TRIB-400 4" 3
27
⁄32 2
13
⁄32 5
I.M.C. sizes
1
⁄ 2 " thru 4"
UL Rated flame retardant 94V-1
UL File No. E-13938
CSA File No. 2884
Application
• When assembled to the end of a threadless conduit,
provides a well-rounded insulating surface over which
conductors may be pulled or on which conductors may
bear while in service
Features
• Designed to be popped onto, and bush, conduit end
• Fast, easy installation without screws
• High-impact thermoplastic construction
C
B
A
1. Cut conduit end squarely.
Remove sharp edges and burrs
on inside and outside diameters
by reaming or filing.
2. Slip the pop-on bushing over
the end of the conduit.
3. Using the flat surface of any standard utility tool such as an
electrician’s pliers (or a hammer with a block of wood for the larger
sizes), strike the bushing on its top surface using a series of light
blows until the end of the conduit rests against the bushing throat
and conduit stop.
Standard Material
High-impact thermoplastic listed
for 105° C (221° F) application
Flammability Classification 94 V-1
Standard Finish
As molded
Range
1
⁄2" through 4" conduit
Listings/Compliances
UL (UL File No. E-13938)
CSA (LR-2884, LR-4484)
UL 514B
NFPA 70
TRIB-150
TRIB-100
TRIB-75
For threadless rigid conduit and intermediate metal conduit.
Insulating Bushing
A-11
United States
Tel: [phone]
800.816.7809
Fax: [phone]
Technical Services
Tel: [phone]
www.tnb.com