The 10250T 30.5 mm
pushbutton line features a zinc die cast
construction with chrome-plated housing
and mounting nut. The same durable
construction is also available with the
corrosive resistant E34 line of
pushbuttons. (See E34 section)
Features
-
Heavy-duty zinc
die cast construction
-
Enclosed silver
contacts with
reliability
nibs
-
Diaphragm seals
with drainage
holes
-
Grounding nibs
on the operator
casing
Reliability Nibs
Eaton’s
Cutler-Hammer® contact
blocks feature
enclosed silver contacts
with pointed
“reliability nibs” for reliable
performance from
logic level up
to 600V. To ensure
reliable switching,
nibs bite through
oxide which can form
on silver contacts,
eliminating the
need for expensive
logic level blocks
for most
applications.
Reliability nibs
improve performance
in dry circuit,
corrosive, fine dust and
other contaminated
atmospheres.
Under normal environmental conditions,
the minimum
operational voltage
is 5V and the
minimum operational
current is 1 mA,
AC/DC. For operation
under a wider range
of environmental
conditions, logic
level contact blocks
with inert
palladium tipped contacts
are recommended.
Diaphragm Seal with Drainage Holes
Liquid Drainage
Eaton’s
Cutler-Hammer pushbutton
operators offer
front of panel drainage
via holes in the
operator bushing. Hidden
from view by the
mounting nut,
these holes prevent
buildup of liquid
inside the
operator, which can prevent
operation in
freezing environments.
The holes also
provide a route for
escaping liquid in
high pressure washdowns,
effectively
relieving pressure
from the internal
diaphragm seal,
ensuring reliable
sealing in applications
even beyond NEMA 4.
Grounding Nibs
10250T line operators have “grounding
nibs” — four metal points on the
operator casting designed to bite
through most paints and other coatings
on metal panels to enhance the ground
connection when the operator is securely
tightened.
Benefits
-
Reliability
nibs improve contact
reliability
even under dry circuit and
fine dust
conditions
-
Drainage holes
prevent buildup of
liquid inside
the operator which
can prevent
operation in freezing
environments
-
Grounding nibs
bit through paint
and other
coatings to provide
secure ground
Contact Operation
Slow make and
break. All normally
closed contacts
have positive opening
operation, i.e.,
normally closed contacts
are forced open in
the event of contact
weld or spring
breakage.
Standards and Certifications
-
CE EN60947-5-1
-
UL 508 — File
No. 131568
-
CSA C22.2 No. 14 — File No. LR68551
