G-249
D4B-
@
N
D4
B-
@
N
Engineering Data
Electrical Durability (Snap-action)
Nomenclature
250 VAC
125 VAC
10,000
5,000
3,000
1,000
500
300
100
480 VAC
250 VAC
500 VAC
10,000
7,000
5,000
3,000
1,000
700
500
300
(cos
j
= 1)
(cos
j
= 0.4)
Oper
ations (x 10
3
)
Oper
ations (x 10
3
)
Switching current (A)
Switching current (A)
Operating frequencies:
30 times/min., cos
f
= 1
Operating frequencies:
30 times/min., cos
f
= 0.4
Head
Operating Position Mark
(arrow)
Conduit Opening
Safety-oriented Lever Setting
Ground Terminal Screw
A ground terminal is provided to improve safety.
Equipped with Operating Position Indicator Plate
Push and rotate
Switch Box Material
Aluminum die-cast
Contact Material
Ag alloy
With roller lever models, the direction of the switch head can
be varied to any of the four directions by loosening the roller
lever switch screws at the four corners of the head.
The roller lever switch em-
ploys a system which allows
selection of operation on on-
ly one side (left or right)
or both sides without the
use of any tools.
Available in four different types of conduit threads:
Pg 13.5, G1/2 or 1/2-14NPT, M20
Grooves which engage the lever every 90
∞
are cut in the
operating position indicator plate to prevent the lever from
slipping against the rotary shaft.
An optimum overtravel (OT) value may be secured by
setting a desired OT value with a projection.
Shearing Force Contact Separating Mechanism
(NC Contact Section Only)
Should any abnormality occur in the contact area, the
contacts are positively pulled apart from each other by
shearing force.
F502-EN2-04.book Seite 249 Dienstag, 26. Juli 2005 5:48 17
