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This switch is a slack cable style with “Slow-Make – Slow Break” contacts.  This switch does NOT provide “Positive Break” or “Positive Transfer” features and should only be used for non-emergency, normal start – stop applications.


This momentary switch is assembled with a normally open contact block which is held closed by a spring in the switch body.  Pulling of the ring eye collapses the spring, allowing the contact block to open.  Releasing of the rope then allows the spring to expand thereby closing the contact.


The housing and cover are molded from high impact glass-filled black polycarbonate.  The contact cavity of the switch has provision for the addition of one more contact block.


Each captive terminal on the replaceable contact block will accept (2) #14 AWG stranded wires.


·        Rain tight rating for outdoor use

·        Gold plated contacts eliminate high resistance tarnishing          

·        Nema 4 (Raintight), IP 66


There are three ½” NPT conduit openings.  The maximum cable recommended rope length is 33 feet with a maximum interval support of 10 feet when horizontal.


This light to medium duty switch is most often used to open and/or close an overhead door but may be used in many other non-emergency applications.


The mechanical life of the switch is in excess of 1,000,000 operations.


Electrical Ratings

“HEAVY DUTY – A600 / N150”

Listed under UL 508 – File # E 58589

Certified under CSA C22.2 – File # LR 3648


Environmental Temperature Range

Operating:  +32oF to +131oF (0oC to +55oC)

Storage:  -40oF to +185oF (-40oC to +85oC)

Note:  Operating temperatures at 0oC are based on the absence of freezing moisture and liquids.


Normal Potential

Normal Current

Inrush Current

110-120 aca volts

6.0 amp.

60.0 amp.

220-240 aca

3.0 amp.

30.0 amp.

440-480 aca

1.5 amp.

15.0 amp.

550-600 aca

1.2 amp.

12.0 amp.

115-125 dcb

2.2 amp.


230-250 dcb

1.1 amp.


a  Power factor 0.35 or less

b  Inductive loads as specified in Section 125 of Industrial

   Control Devices, Controllers and Assemblies, ANSI /

   NEMA ICS 2-1988




These products should only be used where point-of-operation guarding devices have been properly installed & maintained so that appropriate OSHA and ANSI B11.1 regulations & standards are met.  Misapplication of the products on machinery lacking effective point-of operation safeguards can cause serious injury to the operator of that machinery.



Ces produit doivent seulement être utilisés sur des postes à risque correctement sécurisés et entretenus afin d’être conforme aux standards et régulations en vigueur (CSA, CLC). Un mauvais usage de ces produits sur des machines et des postes de travail non sécurisés de manière efficace peut causer des blessures graves au technicien maniant ces machines.

Unit of Measure


Trip Force

N/A 10 lb

Operating Force Between 10 ft. Supports

N/A 1.2 lb

Operating Type

N/A Momentary

Contact Arrangement

N/A Held NC Block #50701-000