Page 1
AFU and AFUX Conveyor Control Switches
CONTROLS: NEC/CEC EXPLOSIONPROOF CONVEYOR SWITCHES
© April 2019
Pull Cord Type, Left or Right Hand, Single or Double End.
NEC — AFUX Series:
Class I, Division 1 and 2, Groups C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 7CD, 9EFG
NEC — AFU Series:
NEMA 3, 4, 4X, 12
Applications
• Emergency stop or normal stop switch for:
— Conveyor lines
— Cranes
— Unloaders
— Bulk handling systems
• Where alarm or computer interface capabilities are needed.
• Used in the control circuit of magnetic motor starters to shut
down motor driven conveyors or other machinery.
• For use in:
— Steel mills
— Mining ore and coal handling operations
— Automotive and other assembly lines
— Warehouses
— Loading docks
— Other industrial processes
• AFUXSeriesisusedinClassIandIIareaswhereammable
vapors or highly combustible dusts are present.
• AFU Series has a gasketed cover rated for NEMA 3, 3R, 4, 4X.
Features
• Ruggedtorsionspringforpositiveactuationofagarm.
• Stainless steel bushing may be easily reversed to increase or
decrease actuation force — 6.8 or 11.3 kgs (15 or 25 lbs).
• Maximum distance between switches should not exceed
61 meters (200 feet).
• Available with two switch types:
A) Two circuit double break switch is rated 15 Amp, 120, 240,
480, 600 Vac, 0.5 HP 120 Vac, 1 HP 240 Vac, 0.8 Amp 115
Vdc, 0.4 Amp 230 Vdc.
B) Single pole/double throw switch is rated 20 Amp, 125, 250,
480 Vac, 10 Amp 125 Vac “L” tungsten lamp load, 1 HP
125 Vac, 2 HP 250 Vac, 0.5 Amp 125 Vdc, 0.25 Amp
250 Vdc.
• Switch temperature range -40 °C to +66 °C (-40 °C to +151 °F).
• Two 1” conduit openings (top and bottom).
Standard Materials
• Housing: cast aluminum
• Flag arm: steel with red epoxy paint
• Actuator shaft, retaining ring, clevis loop and torsion springs:
stainless steel
Standard Finishes
• Standard enclosure: peened
Options
• Whenusingindimlylitapplications,addsufx-L for red
warning light (Only available on conveyor switches with 2 micro
switches per each end. Uses top conduit opening).
• Toorderepoxypowdercoatedswitchesaddsufx-S752.
NEC Certifications and Compliances
• UL Standards: UL 508, UL 698, UL 1203
• UL Listed: E164877, E10449
Double End Unit Right and Left Handed
with Option Warning Light AFU or AFUX
Left Hand Single Unit Right Hand Single Unit
356
Page 2
AFU and AFUX Conveyor Control Switches
CONTROLS: NEC/CEC EXPLOSIONPROOF CONVEYOR SWITCHES
© April 2019
Pull Cord Type, Left or Right Hand, Single or Double End.
NEC — AFUX Series:
Class I, Division 1 and 2, Groups C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 7CD, 9EFG
15 Pound Pull Force — Single End
Left Hand Single
Double End
Right Hand Single
15 Pound Pull Force — Double End
25 Pound Pull Force — Single End
25 Pound Pull Force — Double End
NEC — AFU Series:
NEMA 3, 4, 4X, 12
Left or Right
Left 1 AFU0333-10 AFUX0333-10
Right 1 AFU0333-01 AFUX0333-01
Left 2 AFU0333-50 AFUX0333-50
Right 2 AFU0333-05 AFUX0333-05
Double End 1, each end AFU0333-11 AFUX0333-11
Double End 2, each end AFU0333-55 AFUX0333-55
Left 1 AFU0333-20 AFUX0333-20
Right 1 AFU0333-02 AFUX0333-02
Left 2 AFU0333-60 AFUX0333-60
Right 2 AFU0333-06 AFUX0333-06
Double End 1, each end AFU0333-22 AFUX0333-22
Double End 2, each end AFU0333-66 AFUX0333-66
No. of Two Circuit Double
Break Micro Switches
Ordinary Hazardous
Location Type
Left Hand Single
Double End
Right Hand Single
Left or Right
15 Pound Pull Force — Single End
Left 1 AFU0333-30 AFUX0333-30
Right 1 AFU0333-03 AFUX0333-03
Left 2 AFU0333-70 AFUX0333-70
Right 2 AFU0333-07 AFUX0333-07
15 Pound Pull Force — Double End
Double End 1, each end AFU0333-33 AFUX0333-33
Double End 2, each end AFU0333-77 AFUX0333-77
25 Pound Pull Force — Single End
Left 1 AFU0333-40 AFUX0333-40
Right 1 AFU0333-04 AFUX0333-04
Left 2 AFU0333-80 AFUX0333-80
Right 2 AFU0333-08 AFUX0333-08
25 Pound Pull Force — Double End
Double End 1, each end AFU0333-44 AFUX0333-44
Double End 2, each end AFU0333-88 AFUX0333-88
No. of Single Pole, Double
Throw Micro Switches
Ordinary Hazardous
Location Type
357
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AFU and AFUX Conveyor Control Switch Accessories and Application
CONTROLS: NEC/CEC EXPLOSIONPROOF CONVEYOR SWITCHES
© April 2019
Pull Cord Type, Left or Right Hand, Single or Double End. Pull Cord Type, Left or Right Hand, Single or Double End.
NEC — AFUX Series:
Class I, Division 1 and 2, Groups C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 7CD, 9EFG
Accessories
Mounting Bracket AFUMB
Replacement Torsion Spring — Left AFUTSL
Replacement Torsion Spring — Right AFUTSR
Conduit Plug 1”—11-1/2 NPT PLG100-S
NEC — AFU Series:
NEMA 3, 4, 4X, 12
Description Catalog Number
Typical Application
Left Hand Single Unit
(with option Warning Lamp)
Double End Unit Right and Left Handed
(with option Warning Lamp)
Right Hand Single Unit
(with option Warning Lamp)
358
Page 4
AFU and AFUX Conveyor Control Switch
CONTROLS: NEC/CEC EXPLOSIONPROOF CONVEYOR SWITCHES
© April 2019
Pull Cord Type, Left or Right Hand, Single or Double End.
NEC — AFUX Series:
Class I, Division 1 and 2, Groups C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 7CD, 9EFG
Wiring Information
Description Diagram
Single Pole Double Throw Circuit
Single Pole, Double Throw Micro Switch Rating
• 20 Amps, 125, 250 or 480 Vac
• 10 Amps, 125 Vac ”L” (tungsten lamp load)
• 1 HP, 125 Vac
• 2 HP, 250 Vac
• 1/2 Amp, 125 Vdc
• 1/4 Amp, 250 Vdc
Two Circuit, Double Break Micro Switch Rating
• 15 Amps, 120, 240, 480 or 600 Vac
• 1/2 HP, 120 Vac
• 1 HP, 240 Vac
• 0.8 Amp, 115 Vdc
• 0.4 Amp, 230 Vdc 0.8, 250 Vac
• 1/2 Amp, 125 Vdc
• 1/4 Amp, 250 Vdc
NEC — AFU Series:
NEMA 3, 4, 4X, 12
Two circuit double break switches must be wired to equal voltage sources and the same polarity. Loads should be on the same side of the lines.
1B has the same polarity as 3A.
Dimensions in Millimeters (Inches)
Front Side Mounting Bar
359
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