< back to table of contents > 15 Code Optional Extras For Switch Sizes S0 S1 S2 S3 Spring return from both sides Spring return from one side Spring return for angular displacement up to 30° can be accomplished by using the latching mechanism only. If a large number of contacts must be opened simultaneously or a total angular displacement is larger than 30° over which the spring return is operational, the switch must use one of the spring return devices. Spring return from both sides can be designed to permit maintained position on each side of center. Spring Return over several Positions Ordering data: For M470, specify spring return from either left or right side and details of maintained positions, if required. The uni-directional interlock prevents the switch from being operated counterclockwise. The interlock may be in either all positions or in pre-determined positions only. Uni-directional Interlock Ordering data: Specify which positions should be interlocked. Slip clutch Using the slip clutch, two cam shafts can be coupled in such a way so that the secondary cam shaft will operate only after the primary cam shaft has been moved over a pre-determined angle. This slip clutch allows e. g. the deenergized changing back of switches for pole-changeable motors. Not available for D-switches. Ratchet coupling A ratchet coupling attaches to the rear of the switch. Additional stages are then attached behind the coupling device which serves to operate that portion of the switch only when the handle is turned counterclockwise. When the handle is turned clockwise, the rear switch portion remains in the same position. Slip Clutch and Ratchet Coupling M470/A M470 M400 M200 M230 CA40 CA50 CA63 C26 C32 Dimensions p.31 Dimensions p.34
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