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The following switch is a hand operated, control circuit device, rated ‘Heavy Duty’ normally for use with electromagnetic equipment.  The body is made from die-cast zinc.  The yellow mushroom ergonomic shaped plunger is molded from DuPont Delrin 100ST Acetal for improved impact resistance and is solid color throughout. 


·         Nema 12/13, IP 65

·         Positive Break, Gold Plated Contact

·         Sliding Padlock Attachment

·         Special OUR Block Opens NC Contact Upon Removal from Operator


Each operator will accept up to three tiers of two contact blocks for a total of six separate circuits.  Each operator is supplied with all mounting hardware and a solid neoprene rubber gasket which provides an oil tight seal upon installation.  The mechanical life of this unit is 1,000,000 operations. 


This device can be found on a variety of machinery, used to perform such operations as ‘start’, ‘stop’, ‘top stop’, ‘inch’, ‘jog’, ‘on’, ‘off’, ‘forward’, ‘reverse’, etc.


This series satisfies the requirements of IEC 60947-5-5 – 3.9 direct opening action (positive opening action) (of a contact element); when fitted with one or more of any of our normally closed contact blocks.  This is commonly referred to as “Positive Break”, meaning the breaking of the normally closed contacts is not dependent upon springs.


Note:  The 52702 block assembled on this switch consists of a B block (50702) attached to an adapter.  This adapter Opens the NC contact of the B block Upon Removal from the switch operator.  The OUR action provides an added level of security for instances where a NC block may be removed from the operator.


Electrical Ratings

“HEAVY DUTY – A600 / N150”


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


Operator Color

N/A Yellow

Operator Material, Size, Style

N/A 2.00 in. Plastic Mushroom

Padlock Feature

N/A Yes

Switch Type

N/A Maintained

Positive Opening Contact



N/A (2) 52702 + 50724
(2) NC / (1) NO
NC Opens upon Removal

Operating Force

N/A 12.0 lb

Approx. Shipping Weight

N/A 0.80 lb

Plunger Head Operator Replacement

N/A 43200-044

Operating Type

N/A Maintained