General-purpose Limit Switch
D4A-
@N
F-19
Limit
Switches
■
Contacts
The D4A-
@
N saves installation space, simplifies wiring methods, and lowers operation costs because only a single D4A-
@
N is required for the
control of the speeds of a factory machine or selection of CW or CCW rotation of a motor, for which two conventional limit switches are required.
Engineering Data
■
Electrical Durability (SPDT Double-bread)
Pole1
Pole2
Pole1
Pole2
Pole1
Pole2
Pole1
Pole2
Pole1
Pole2
Simultaneous Operation
Sequential Operating
Use the D4A-0017N head.
Pole 1 operates first and pole 2 operates second.
Center Neutral Operating
Use the D4A-0018N head.
Pole 1 operates on CW and pole 2 operates CCW.
Free position (FP)
Operating
Pole 1 operates first Pole 2 operates second
D4A-
@
center neutral type
Pole1
Pole2
Pole1
Pole2
This head is compatible with a SPDT type
head.
Free position
(FP)
Pole 1 and pole 2 are actuated simultaneously.
Operates either CW, CCW, or both.
Pole 2 operates
on CCW
Free position
(FP)
Pole 1 operates
on CW
Note:
The contact configuration of the center neutral operating
model is different from that of any other D4A-
@
Switch.
Pole 2 operates
on CCW
Free position
(FP)
Pole 1 operates
on CW
125 VAC
250 VAC
480 VAC
125 VAC
250 VAC
480 VAC
(Ambient temperature: 5
°
C to 35
°
C; ambient humidity: 40% to 70%)
Switching current (A)
Dur
ability (x 10
4
oper
ations)
Dur
ability (x 10
4
oper
ations)
Switching current (A)
Operating frequencies:
30 operations/min,
cos
φ
= 1
Operating frequencies:
30 operations/min,
cos
φ
= 0.4