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D4A-[]N

General-purpose Limit Switch

D4A-[]N

The Limit Switch with Better Seal, Shock Resistance, and Strength

Ratings

Type Rated voltage Non-inductive load (A) Inductive load (A)
Resistive load Lamp load Inductive load Motor load
NC NO NC NO NC NO NC NO
SPDT double-break
(with/without indicator)
125 VAC *
250 VAC *
480 VAC
600 VAC
10
10
10
3
10
10
10
1
3
2
1.5
1
1.5
1
0.8
0.5
10
10
3
1.5
5
3
1.5
1
2.5
1.5
0.8
0.5
8 VDC
14 VDC
30 VDC
125 VDC *
250 VDC *
10
10
6
0.8
0.4
6
6
4
0.2
0.1
3
3
3
0.2
0.1
10
10
6
0.8
0.4
6
6
4
0.2
0.1
DPDT double-break
(without indicator)
125 VAC
250 VAC
480 VAC
600 VAC
5
3
1.5
1
2
1
0.5
0.4
4
2
1
0.7
3
1.5
0.8
0.5
14 VDC
30 VDC
125 VDC
250 VAC
5
3
0.4
0.2
2
1
0.1
0.05
4
2
0.4
0.2
3
1.5
0.1
0.05
DPDT double-break
(with in-dicator)
125 VAC
250 VAC
5
3
2
1
4
2
3
1.5
12 VDC
24 VDC
48 VDC
5
3
1
--- --- --- ---

* For those with indicators, refer to the following rated voltages.

Item Type SPDT, Double-break DPDT, Double-break
Without indicator With indi-cator Without indicator With in-dicator
Inrush current Normally closed 30 A max.
Normally open 20 A max.

Note: 1. The above current ratings are for steady-state current.
           2. Inductive loads have a power factor of 0.4 min. (AC) and a time constant of 7 ms max. (DC).
           3. Lamp loads have an inrush current of 10 times the steady-state current.
           4. Motor loads have an inrush current of 6 times the steady-state current.

Ratings for Indicators

Classi-fication Indicator Model Rated voltage Leakage current Internal resistance
SPDT double-break Neon lamp D4A-0300N 125 VAC, 250 VAC Approx. 0.47 mA 150 k Ω
LED D4A-0E00N 24 VDC Approx. 1.3 mA 15 k Ω
DPDT double-break Neon lamp D4A-0L00N 125 VAC, 250 VAC Approx. 0.28 mA 240 k Ω
LED D4A-0P00N 48 VDC Approx. 1.4 mA ---

Characteristics

Degree of protection
(reference standards)
IP67 and NEMA 1, 2, 3, 4X, 5, 6P, 12, and 13
Durability
*2
Mechanical *1 SPDT, double-break, roller lever: 50,000,000 operations min.
DPDT, double-break, roller lever: 30,000,000 operations min.
Electrical SPDT, double-break: for 125 VAC, 10 A resistive load: 1,000,000 operations min.
DPDT, double-break: for 125 VAC, 5 A resistive load: 750,000 operations min.
Operating speed 1 mm/s to 2 m/s (in case of D4A-3101N roller lever model)
Operating
frequency
Mechanical 300 operations/minute
Electrical 30 operations/minute
Rated frequency 50/60 Hz
Insulation resistance 100 MΩ min. (at 500 VDC) between terminals of the same polarity, between current-carrying metal parts and ground, and between each terminal and non-current-carrying metal part
Contact resistance 25 mΩ max. (initial value)
Temperature rise 50°C max.
Dielectric
strength
Between terminals of same
polarity
1,000 VAC, 50/60 Hz for 1 min.
Between current-carrying
metal parts and ground
2,200 VAC, 50/60 Hz for 1 min. *3
Between each terminal and
non-current-carrying metal
part
2,200 VAC, 50/60 Hz for 1 min. *3
Pollution degree (operating environment) 3
Protection against electric shock Class I (with grounding terminal)
Vibration
resistance
Malfunction *4 10 to 55 Hz, 1.5-mm double amplitude
Shock
resistance
Destruction 1,000 m/s2 max.
Malfunction *4 SPDT, double-break, roller lever: 600 m/s2 max.
DPDT, double-break, roller lever: 300 m/s2 max.
Ambient operating humidity 35% to 95%RH (with no icing)
Weight Approx. 290 g (in case of D4A-3101N)

Note: The above figures are initial values.
*1. Excluding maintained models.
*2. The values are calculated at an operating temperature of +5°C to +35°C, and an operating humidity of 40% to 70%RH.
       Contact your OMRON sales representative for more detailed information on other operating environments.
*3. 1,500 VAC is applied to the indicator lamp type.
*4. Not including Flexible rods (cat whisker, plastic rod, coil spring, and spring wire types).

Type Roller lever * 1 Plunger, flexible rod * 2 With indicator
Ambient tempera-ture -40°C to +100°C -20°C to +100°C -10 ° C to +80 ° C

*1. Excluding low-torque and high-sensitivity models.
*2. Including roller lever low-torque and high-sensitivity operating models.