General-purpose Limit Switch
D4A-
@N
F-9
Limit
Switches
General-purpose Limit Switch
D4A-
@N
The Limit Switch with Better Seal, Shock
Resistance, and Strength
• A double seal on the head, a complete gasket cover, and other
features ensure a better seal (meets UL NEMA 3, 4, 4X, 6P, 12,
13).
• Block mounting method to reduce weight to 290 g.
• Block mounting method also reduces downtime for mainte-
nance.
• Wide standard operating temperature range:
–40
°
C to 100
°
C (standard type).
• Models with fluoro-rubber available for greater resistance to
chemicals.
• DPDT, double-break models available for complex operations.
Model Number Structure
■
Model Number Legend
1. Receptacle Box
1:
1/2-14 NPT conduit (SPDT, double-break)
2:
1/2-14 NPT conduit (DPDT, double-break)
3:
G 1/2 conduit (SPDT, double-break)
4:
G 1/2 conduit (DPDT, double-break)
5:
M20 x 1.5 conduit (SPDT, double-break)
6:
M20 x 1.5 conduit (DPDT, double-break)
2. Switch Box
1:
SPDT, double-break, without indicator
3:
SPDT, double-break, neon lamp
A:
SPDT, double-break, LED (12 VDC)
C:
SPDT, double-break, LED
(24 VDC, leakage current: 4 mA)
E:
SPDT, double-break, LED
(24 VDC, leakage current: 1.3 mA)
G:
SPDT, double-break, LED (48 VDC)
5:
DPDT, double-break, simultaneous operation, without indi-
cator
7:
DPDT, double-break, sequential operation, without indicator
(See note 1.)
9:
DPDT, double-break, center neutral operation, without indi-
cator (See note 2.)
L:
DPDT, double-break, simultaneous operation, neon lamp
M:
DPDT, double-break, sequential operation, neon lamp
(See note 1.)
N:
DPDT, double-break, center neutral operation, neon lamp
(See note 2.)
P:
DPDT, double-break, simultaneous operation, LED
Q:
DPDT, double-break, sequential operation, LED
(See note 1.)
R:
DPDT, double-break, center neutral operation, LED
(See note 2.)
3. Head
01:
Roller lever, standard
02:
Roller lever, high-sensitivity
03:
Roller lever, low torque
04:
Roller lever, high-sensitivity, low torque
05:
Roller lever, maintained
17:
Roller lever, sequential operation
18:
Roller lever, center neutral operation
06:
Side plunger, standard
07-V: Side plunger, vertical roller
07-H: Side plunger, horizontal roller
08:
Side plunger, adjustable
09:
Top plunger, standard
10:
Top plunger, roller
11:
Top plunger, adjustable
12:
Flexible rod, spring wire
14:
Flexible rod, plastic rod
15:
Flexible rod, cat whisker
16:
Flexible rod, coil spring
Note: 1.
Use the D4A-0017N Special Head.
2.
Use the D4A-0018N Special Head.
3.
Fluoro-rubber sealed type is also available.
1 2 3
D4A-
@@@@
N
