28-3426 EATON, 28-3426 Datasheet - Page 6

• Manufacturer Part Number: 28-3426
• Description: Switch Accessories, Assembly Hardware
• Manufacturer: EATON

Specifications of 28-3426

• For Use With: EURO/SR, ESPORT And NGR Rockers
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LEVER TYPE REFERENCE TABLE
These drawings show the SG and SJ Series. Construction for other Series may vary slightly. Refer to Selection Table (page 4.3) for Lever Length.
MECHANICAL TERMS
4.6
Free Position
Overtravel
Overtravel
Operating
Operating
Pretravel
Position
Position
Reset
Force
Force
The unoperated, fully extended position of the actuator.
The position of the actuator when the snap action of
all switch contacts occurs during actuation stroke.
4
Force or torque applied to actuator to move from
Movement of actuator from Operating Position
Position of actuator when all switch contacts
from free position to the Operating Position.
Operating Position to full Overtravel Position.
to final position at end of actuating stroke.
Force or torque applied to the actuator
Distance or angle the actuator travels
return to positions prior to actuation.
to reach the Operating Position.
SPECIAL DEVICES AND ACCESSORIES
S Series Snap Action Switches
Button
Code
Straight (Medium)
Code
Simulated Roller
Code
Roller (Long)
Code
A
C
E
H
POSITION
FREE
PLUNGER
SWITCH
MECHANICAL TERMS
LEVER TYPES
DEFINITION OF OPERATING CHARACTERISTICS
PRETRAVEL
OPERATE
POSITION
Contact Pressure
Multiple Break
Contact Gap
Snap Action
Differential
Total Travel
Movement
Release
Force
OPERATE
FORCE
MOUNTING HOLE CENTERLINE
DIFFERENTIAL TRAVEL
POSITION
TRAVEL
(continued)
OVER-
OVTR.
The amount of external force or torque the switch will overcome
A rapid motion of the contacts from one position to another.
when returning from Overtravel Position to Free Position.
Snap Action is independent of rate of travel of actuator.
OVERTRAVEL
At any point, the amount of force holding stationary
An arrangement of contacts such that the circuit is
The effective open distance between the movable
Distance or angle the actuator travels in returning
FORCE
from Operating Position to Reset Position.
broken simultaneously in several places.
The sum of pretravel and overtravel.
and movable contacts together.
38˚
and stationary contacts.
POSITION
RELEASE
21˚
RELEASE
0˚
13˚
FORCE
Straight
Code
Straight (Long)
Code
Roller (Short)
Code
15˚
B
D
G
Series SJ
Code
P , Q, R