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Omron D4A-4918N General-purpose Limit switches Omron D4A-4918N General-purpose Limit switches

News August 16, 2021

Omron D4A-4918N General-purpose Limit switches Omron D4A-4918N General-purpose Limit switches


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Omron D4A-4918N_副本_副本

Ratings/Performance of Omron D4A-4918N General-purpose Limit switches Omron D4A-4918N General-purpose Limit switches


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Shape/Structure General-purpose Limit switches

Operating mechanism Snap action

ctuator Rotary action

Center-neutral type

Frequency 50/60 Hz

Contact configuration 4-circuit double break type

Contact form DPST-NO/DPST-NC

Load General load

Ratings (AC): Non-Inductive load Resistive load: 5 A at 125 VAC/3 A at 250 VAC/1.5 A at 480 VAC/1 A at 


600 VAC

Lamp load: 2 A at 125 VAC/1 A at 250 VAC/0.5 A at 480 VAC/0.4A at 600 VAC

Inductive load: 4 A at 125 VAC/2 A at 250 VAC/1 A at 480 VAC/0.7 A at 600 VAC

Motor load: 3 A at 125 VAC/1.5 A at 250 VAC/0.8 A at 480 VAC/0.5 A at 600 VAC

Ratings (DC): Non-Inductive load Resistive load: 5 A at 14 VDC/3 A at 30 VDC/0.4 A at 125 VDC/0.2 A at 


250 VDC

Lamp load: 2 A at 14 VDC/1 A at 30 VDC/0.1 A at 125 VDC/0.05 A at 250 VDC

Inductive load: 4 A at 14 VDC/2 A at 30 VDC/0.4 A at 125 VDC/0.2 A at 250 VDC

Motor load: 3 A at 14 VDC/1.5 A at 30 VDC/0.1 A at 125 VDC/0.05 A at 250 VDC

Inrush current NC: 30 A max.

NO: 20 A max.

Conduit G1/2

Ambient temperature Operating: -40 to 100 ℃

Ambient humidity 35 to 95% RH (with no icing)


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Permissible operating frequency Electrical: 30 operations / 1 minute max.

Mechanical: 300 operations / 1 min max.

Contact resistance (Initial value) 25 mΩ max.

Insulation resistance Between each terminal of the same polarities: 100 MΩ min.

Between live-metallic part and ground: 100 MΩ min.

Between each terminal and non-live-metallic part: 100 MΩ min.

at 500 VDC

Dielectric strength Between each terminal of the same polarities: 1,000 VAC 50/60 Hz 1 min

Between live-metallic part and ground: 2,200 VAC 50/60 Hz 1 min

Between each terminal and non-live-metallic part: 2,200 VAC 50/60 Hz 1 min

Durability Electrical: 750,000 operations min. (5 A at 125 VAC)

Mechanical: 30 million operations min.

Vibration resistance Malfunction: 10 to 55 Hz, 1.5 mm double amplitude

Shock resistance Destruction: 1,000 m/s2 max.

Malfunction: 300 m/s2 max.

Pollution degree 3

Degree of protection IP67

NEMA Type1, 2, 3, 4, 4X, 5, 6P, 12, 13

Classification of protection against electric shock Class I (with ground terminal)


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Operating Force (OF) Standard value 0.39 N・m max.

Release Force (RF) Standard value 0.02 N・m min.

Pre-Travel (PT) Standard value 19 ° max.

Average value 15 °

Movement Differential (MD) Standard value 5 ° max.

Average value 4 °

Over-Travel (OT) Standard value 65 ° min.


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Similar model codes of Omron D4A-4918N General-purpose Limit switches Omron D4A-4918N General-purpose Limit switches for your reference : 


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3Z4S-LE SV-03514V

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D2VW-5L2A-1M

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D4N-8A2GR

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D4MC-2020

D4N-112G

D4A-2501N

D4B-1116N

D4B-4111N

D4NS-1BF

D4A-3101N+D4A-C00

D4V-8108Z

E2A-M18KS08-WP-B1-5M

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E2E-X1R5E1

E3FA-BP22

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E5CC-QX2AUM-000

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FHV7H-C063R-C

FHV7H-M016-C

FHV-LEM-S25

FHV-LTM-MC

FHV-VDB 20M

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FHV-XMT-7

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G5RL-K1A-E-DC12

G6B-1174P-FD-US

G7J-2A2B-B DC24

G7J-3A1B-B DC24

G7J-4A-B DC24

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ZEN-8E