Hubbell 2210 Specifications

Hubbell Industrial Controls, Inc.

General Information

Type C Speed Responsive switches assure
maximum protection of material handling
systems and rotating equipment. They pro-
vide overspeed and underspeed protection
with precise speed sensing and highly re-
petitive accuracy. These switches have
excellent repetitive accuracy and are basi-
cally unaffected by temperature variations.
•
NEMA Type enclosures for indoor,
outdoor & hazardous environments.
•
Contacts easily adjustable while run-
ning.
•
High-speed operation to 4700 RPM.
•
Low-speed operation from 10 RPM.
•
Snap-Action or Slow-Action contacts, or
pneumatic valve.
•
Oversize bearings providing low-friction.
•
Surface or flange mounting.
•
5/8" dia. input shaft & rugged construc-
tion.
•
± 5% repeatability.
Application
Type C switch provide overspeed & under-
speed protection and precise speed sensing
with highly repetitive accuracy to indicate
slipping or broken conveyor belts, preventing
material pileups ... prevent overspeed of
motors, generators, fans & pumps ... control
starting of diesel engines ... prevent damage
to rotating industrial machinery when speeds
increase or decrease from safe values ... for
plugging applications to assure quick & safe
stops ... sequential control of functions at
specific speeds.
Description
Housing & Enclosures - Standard Type C
centrifugal switch housings are molded of
tough fiberglass reinforced polyester resin,
for the flyweight compartment and a cast
aluminum housing for the contact compart-
ment. The standard molded housings are
resistant to most acid, alkali and salt com-
pounds.
When flange mounting is specified, the flange
and the flyweight section of the housing are
precisely machined from a single aluminum
casting.
Adaptation can be provided to meet special
mounting requirements.
NEMA Type 3/13 enclosures are supplied for
indoor/outdoor industrial applications.
SPEED RESPONSIVE SWITCH
EUCLID TYPE C/MEDIUM - HIGH SPEED/CENTRIFUGAL
NEMA Type 4 enclosure (water-tight) for
indoor/outdoor applications with a double
shaft seal & grease fitting for lubrication and
purging as standard equipment ensuring
longer bearing life.
NEMA Type 7, 9 and 10 explosion proof
enclosures are available also. These enclo-
sures have accurately machined cast alumi-
num housings, either surface mounted or
flange mounted. The NEMA Type 7 and 9
housings are designed in accordance with
specifications for switches in Class 1 Group
C or D and Class 2 Groups E, F and G haz-
ardous locations. NEMA Type 10 enclosures
have been certified by the Bureau of Mines
as meeting the requirements of Schedule 2G
for explosion-proof construction.
X/P-943 has been assigned to those EUCLID
NEMA TYPE 3/13 ENCLOSURE
NEMA TYPE 7, 9 OR 10 ENCLOSURE
switches. Use this reference when specifying
Euclid.
Flyweight System - The flyweight and link-
age system (mounted in a separate com-
partment from the contacts) is completely
suspended on the 3/4" square part of the
stainless steel shaft by 8 bearings.
bearing suspension of the flyweight and link-
age system provides a very low-friction
means of transmitting the centrifugal force
through a small concentric shaft to the switch
contact compartment. The shaft is supported
by 2 oversize ball bearings. No lubrication of
the ball-bearing suspension system is re-
quired and, because the main shaft bearings
are permanently lubricated, no access should
File No.
be needed into the flyweight compartment
into the flyweight compartment for servicing.
SPECIFICATIONS
2210
Feb. 1977
Replace: June 1972
The