Indicator light
D-A80H without
indicator light
Most sensitive position
Auto Switch Internal Circuit
D-A72H
D-A73H
D-A76H
D-A80H
Auto Switch Specifications
Dimensions
Auto switch model
0.5
3
5
10
47
—
10
47
—
11
52
—
10
47
77
D-A72H D-A73H D-A76H D-A80HD-A7H, D-A80H
Grommet

Electrical entry: In-line

Lead wire length
(m)
PLC: Abbreviation of Programmable Logic Controller
D-A7H (With indicator light)
Auto switch model
Applicable load
Load voltage
Max. load voltage/Load current range
(3)
Contact protection circuit
Internal voltage drop
Indicator light
24 VDC
5 to 40 mA
2.4 V or less
100 VAC
5 to 20 mA
D-A72H
Relay, PLC
200 VAC
5 to 10 mA
D-A76H
IC circuit
4 to 8 VDC
20 mA
0.8 V or less
D-A73H
Relay, PLC
None
Red LED lights when ON.
D-A80H
Relay, IC circuit, PLC
40 mA
None
1 Ω or less (Including lead wire length of 3 m)
D-A80H (Without indicator light)
Auto switch model
Applicable load
Load voltage
Maximum load current
Contact protection circuit
Internal resistance
50 mA 20 mA
24 V or less
AC
DC 48 VAC
DC 100 V AC
DC
LED
Reed switch
Resistor
Zener diode
Brown
Blue
OUT (+)
Brown
앑
OUT (–)
Blue
LED
Reed switch
Resistor
Reverse
current
prevention
diode
OUT
Black
DC (+)
Brown
DC (–)
Blue
Load
(+)
(–)
DC power
supply
Blue
LED
Reed switch
Resistor
Zener diode
Brown
OUT
Blue
OUT
Brown
Choke
coil
Contact protection box
CD-P11
Surge
absorber
앑
Reed switch
OUT (±)
Brown
앑
Note 1) Operating load is an induction load.
Note 2) In the case the wiring length to load is
more than 5 m.
Note 3) Wiring to the load is 5 m or longer.
Use the contact protection box in any of the
above listed situations. The contact point life
may decrease. Especially in the case of
D-A72H, be sure to use the contact
protection box. (Refer to page 12-13-5 for
contact protection box.)
• Lead wire — Oil resistant vinyl heavy-duty cord, 0.2 mm2, 2 cores (Brown, Blue), 3 cores (Brown,
Black, Blue), 0.5 m
Note 1) Regarding the common specifications of the reed switches, refer to page 12-13-5.
Note 2) Regarding the lead wire length, refer to page 12-13-5.
Note 3) Under 5 mA, the strength of the indicator light is poor. In some cases, visibility of the
indicator light will not be possible where the output signal is less than 2.5 mA. However,
there is no problem in terms of contact output, when an output signal exceeds 1 mA or
more.
Reed Switch
Rail Mounting Style

D-A7

H/D-A80H

OUT ( )
Blue
±
Contact
protection
box
CD-P11
CD-P12
Contact
protection
box
CD-P11
CD-P12
Weight
(g)
For details about certified products
conforming to international standards,
visit us at www.smcworld.com.
12-13-8
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