Thomas & Betts Products


Why Sta-Kon Terminals &
Disconnects Are Better

Chamfered/Funneled Terminal Barrel Entry
This feature makes wire insertion faster annd easier. Chamfering eliminates wire
strand "hang-up" and departure upon insertion into the terminal's barrel. The
loss of even a couple of wire strands can have negative results on
electrical efficiency and resistance to mechanical strain.
Deep Internal Serrations
After the insertion of a wire into the terminal's barrel, a deep serrated interior insures
a large area of contact which lowers the resistance of a connection. Upon the
mechanical force of tool-applied pressure, the wire strands cold flow into the
serrated interior. This guarantees electrical resistance lower than the wire to
which it is applied. This feature also prevents pullout from vibration and
mechanical strain. Deep internal serrations can be compared to the
effective holding power of a well treaded tire on a wet highway.
Sta-Kon's Long Barrel Design
If lowering electrical resistance, preventing wire pullout, eliminating a "missed" crimp,
and an insulator that stays on the barrel during installation are your goals, then you
need a terminal with a long barrel. The fact is that most competitive barrel lengths
range from 20%-50% shorter than the Sta-Kon. The results of these shorter lengths
are usually a stream of electrical failure, rework, lost insulators and added
expense. But with the Sta-Kon, the additional length provides the insulator
with additional surface area for holding tight to the barrel.
Anti-Rotational Tongues
This is a unique feature to the Thomas & Betts ring tongue terminal.
This design prevents terminal shorting by keeping the terminal secure in the terminal block.
The installer can place a greater number of terminals closer together without worry.
Brazed or Overlapped Seam
A long barrel design is of little value unless it is one solid piece.
That is why Thomas & Betts brazes the seam on their vinyl insulated Sta-Kon and
overlaps the seam on nylon insulated terminals. Many competitive terminals have
butted seams. This means increased chances for wirestrand loss, poor resistance,
wire pullout and electrical failure. If the installer doesn't position the tool exactly on
the correct spot on the barrel, there's a likely chance of an improper termination. The
butted seam can also fold due to tool-applied pressure piercing the terminals insulation
from the inside out. With a brazed or overlapped seam the installer can crimp
anywhere along the barrel's surface providing up to 21/2 times the tensile strength
of a butted seam terminal, guaranteeing proper electrical flow, void free.
Underwriters Laboratories Listing
Sta-Kon Rings, Fork, and Locking Forks are tested and listed to U.L. 486A, two-way splices
to U.L. 486C, disconnects to U.L. 310 and all applicable products to CSA 22.2.
Selective Annealing
Because of the mechanical strength of copper, an installer can experience fatigue
associated with repeated installations. For this reason Thomas & Betts puts our
terminals through one more step called selective annealing. This process leaves the
barrel soft enough to crimp and form around the wire. However, we "cold form" the
tongue during the manufacturing process so it remains strong. This is done so the tongue
can withstand repeated bends and bolt tightening strain common in most electrical
installations. Many competitors attempt to accomplish similar goals by removing
valuable material or using a softer copper which has lower conductivity. This
increases electrical resistance as well as the odds for shorting and downtime.
Proper Identification
Thomas & Betts identifies all terminals with its initials, T & B. The terminals also indicate
wire and stud sizes. These markings are clearly visible on the surface of the tongue,
taking any guesswork out of replacing or reordering additional parts.
Thomas & Betts' superior bright plating also assists in visibility.
All Sta-Kon Terminals are Deburred and Degreased
To insure a Sta-Kon terminal is properly plated and insulated, all parts are put through
a process which cleans and smooths the terminal of any manufacturing by-products,
mainly grease, oils and sharp edges. Many competitors do not put their
product through such rigorous finishing.


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any Thomas & Betts product
visit our Information Request page