39SE22-R datasheet(6/14 Pages) HONEYWELL

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SE and XE Series

ELECTROMECHANICAL SWITCHES

Definitions below explain the meaning of

operating characteristics. Characteristics

shown in tables were chosen as most

significant. They are taken at normal room

temperature and humidity. These may vary

as temperature and humidity conditions

differ. Sketches show how characteristics

are measured for in-line plunger actuation.

Linear dimensions for in-line actuation are

from top of plunger to a reference line,

usually the center of the mounting holes.

Differential Travel (D.T.) –

Plunger or

actuator travel from point where contacts

‘‘snap-over’’ to point where they ‘‘snap-

back.’’

Free Position (F.P.) –

Position of switch

plunger or actuator when no external force

is applied (other than gravity).

Full Overtravel Force –

Force required to

attain full overtravel of actuator.

Operating Position (O.P.) –

Position of

switch plunger or actuator at which point

contacts snap from normal to operated

position. Note that in the case of flexible

or adjustable actuators, the operating

position is measured from the end of the

lever or its maximum length. Location of

operating position measurement shown on

mounting dimension drawings.

Operating Force (O.F.) –

Amount of force

applied to switch plunger or actuator to

cause contact ‘‘snap-over.’’ Note in the

case of adjustable actuators, the force is

measured from the maximum length posi-

tion of the lever.

Overtravel (O.T.) –

Plunger or actuator

travel safely available beyond operating

position.

Pretravel (P.T.) –

Distance or angle trav-

eled in moving plunger or actuator from

free position to operating position.

Release Force (R.F.) –

Amount of force

still applied to switch plunger or actuator

at moment contacts snap from operated

position to unoperated position.

Total Travel (T.T.) –

Distance from actuator

free position to overtravel limit position.

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