Beckwith Electronics


824 Horan Drive, Fenton, Mo 63026
(636) 343-6463

(636) 343-7026 fax

Contact Us



EAO Switch



Rotary Actuators

Order Contact Blocks Seperately.
Dimensions and Mounting Suggestions

Series 04 Long and Short Lever Actuators
Round and Square

Includes mounting flange, but contact blocks must be ordered separately
Description Lever Actuator Position Action* Bezel Long Lever Short Lever
Gray plastic
front ring
Anodized Al
front ring
Gray plastic
front ring
Anodized Al
front ring
  Round 704-102.0 704-103.0 704-412.0 704-413.0
Square 704-302.0   704-512.0  
  Round 704-100.0 704-101.0 704-410.0 704-411.0
Square 704-300.0   704-510.0  
Round 704-092.0 704-093.0 704-402.0 704-403.0
Square 704-292.0   704-502.0  
Round 704-094.0 704-095.0 704-404.0 704-405.0
Square 704-294.0   704-504.0  
Round 704-096.0 704-097.0 704-406.0 704-407.0
Square 704-296.0   704-506.0  
Round 704-098.0 704-099.0 704-408.0 704-409.0
Square 704-298.0   704-508.0  
* Symbol indicates a maintained position with no operation of the contact block.

With lever actuators, it is possible to obtain a variety of switch closures. Each contact block can be obtained with 1 or 2 independent switching elements. By proper selection of N.O., N.C., and combinations of both, various patterns can be generated.

Two position rotary long or short lever actuators have a double cam that actuates the contact block plungers as follows:

Three position long or short lever actuators have a single cam that actuates the contact block plungers as follows (note that contact blocks can be reversed 180°):




The following switch patterns can therefore be generated:
Contact Block Plunger
Green - N.O.
Red - N.C.
Switch Contacts
Not Actuated Actuated
N.C. red open closed
N.O. green closed open
N.O.
N.O.
green
green
open
open
closed
closed
N.C.
N.C.
red
red
closed
closed
open
open
N.O.
N.C.
green
red
open
closed
closed
open