AFU and AFUX Conveyor Control Switch
Cooper Crouse-Hinds
AFU and AFUX conveyor control switches are
used:
Application:
as emergency or normal ‘‘STOP’’ switch for
conveyor lines, cranes, unloaders, bulk
handling systems and similar equipment
in steel mills, mining and ore and coal
handling operations, automotive and other
assembly lines, warehouses, loading docks
and various process industry facilities
in the control circuit of magnetic motor
starters to shut down motor-driven conveyors
or other machinery when switch is actuated.
AFU series
complies with requirements for
use in Class II areas having combustible
dusts that may or may not be electrically
conductive.
AFU series
are also gasketed for use in
hosedown areas even when combustible
dusts are present.
AFUX series
complies with requirements for
use in NEC Class I areas which are
hazardous due to the presence of flammable
vapors or gases. AFUX series also complies
with requirements for use in NEC Class I
areas which are hazardous due to the
presence of flammable vapors or gases.
AFUX series
also complies with NEC
requirements for use in Class II hazardous
areas, or for use in NEC hazardous areas
classified simultaneously as Class I and
Class II.
Features:
Furnished with one or two end units, each
containing 2-NO and 2-NC contact
arrangements.
Precision switches provide maintained
contact (switches have a snap action
mechanism).
Enclosure has three 1 conduit hubs – two
for horizontal through feed and one at the
bottom. Cast mounting lugs on 11⁄2 centers
permit attachment to the web of a standard 3
angle iron.
In installation, the actuating line or cable is
connected from a fixed point to the loop on
the end unit. A pull on the line of the required
operating force and with a total movement of
1⁄2 actuates the plunger, opens the switch
and trips the red painted indicating arm
forward, which locks the plunger in the
actuated (switch open) position. Returning
the indicating arm to its normal position
resets the mechanism. A typical installation
would include single end switch units at each
end of the conveyor with double end switch
units between.
Depending on the size and length of line,
supports at properly spaced intervals may be
necessary to ensure that the line or cable
weight alone will not actuate switch.
Standard Materials:
Enclosure – Feraloy® iron alloy
Plunger – stainless steel
Loop – bronze
Indicating arm – steel
Electrical Rating
Control circuit switch – 15 AMP, 600 VAC max.
Options:
Finish: Corro-free TM epoxy powder coat –
add suffix S752 to the standard catalog
number for coating outside only.
Certifications and
Compliances:
AFU SERIES
NEC/CEC:
Class II, Division 1, Groups E,F,G
Class II, Division 2, Groups F,G
Class III
Encl. 3,5
NEMA: 3, 4, 9EFG
IP66
UL Standard: 698
CSA Standard: 22.2 No. 30
AFUX SERIES
NEC:
Class I, Division 1 & 2, Groups C,D
Class II, Division 1, Groups E,F,G
Class II, Division 2, Groups F,G
Class III
NEMA: 3, 7CD, 9EFG
IP65
UL Standard: 698
Standard Finishes:
Feraloy iron alloy – electrogalvanized and
aluminum acrylic paint
Steel – electrogalvanized with chromate
finish (red acrylic paint on indicating arm)
Bronze – natural
Single end left 15 25 AFU0333-50 AFUX0333-50
Single end left 25 50 AFU0333-60 AFUX0333-60
Single end right 15 25 AFU0333-05 AFUX0333-05
Single end right 25 50 AFU0333-06 AFUX0333-06
Double end 15 25 AFU0333-55 AFUX0333-55
Double end 25 50 AFU0333-66 AFUX0333-66
Cooper Crouse-Hinds MARKASINA A?T ?R?N GRUPLARI
