Industrial Automation

A

General-purpose Basic Switch

High-capacity Switch Capable of Handling 20 A Loads with Large Inrush Currents

last update: September 15, 2023

Ratings


Rated voltage (V)	Non-inductive load (A)				Inductive load (A)
	Resistive load		Lamp load		Inductive load		Motor load
	NC	NO	NC	NO	NC	NO	NC	NO
125 VAC 250 VAC 500 VAC	20 20 15		7.5 7.5 4		20 20 10		12.5 8.3 2

8 VDC 14 VDC 30 VDC 125 VDC 250 VDC	20 20 6 0.5 0.25		3 3 3 0.5 0.25	1.5 1.5 1.5 0.5 0.25	20 15 5 0.05 0.03		12.5 12.5 5 0.05 0.03

Note: 1. The above values are for steady-state current.
2. Inductive load has a power factor of 0.4 min. (AC) and a time constant of 7 ms max. (DC).
3. Lamp load has an inrush current of 10 times the steady-state current.
4. Motor load has an inrush current of 6 times the steady-state current.
5. The ratings values apply under the following test conditions:
(1) Ambient temperature: 20±2°C
(2) Ambient humidity: 65±5%RH
(3) Operating frequency: 20 operations/min

Certified Standard Ratings

Ask your OMRON representative for information on certified models.

UL/CSA (General ratings only)

Rated voltage	A-20G
125 VAC	1 HP 10 A "L"
250 VAC	2 HP
480 VAC	20 A
125 VDC	0.5 A
250 VDC	0.25 A

Characteristics

Dielectric strength
Operating speed		0.01 mm to 1m/s * 1
Operating frequency	Mechanical	240 operations/min
Operating frequency	Electrical	20 operations/min
Insulation resistance		100 MΩ min. (at 500 VDC)
Contact resistance		15 mΩ max. (initial value)
Dielectric strength		1,000 VAC, 50/60 Hz for 1 min between terminals of the same polarity 2,000 VAC, 50/60 Hz for 1 min between the current-carrying metal parts and the ground, and between each terminal and non-current- carrying metal parts
Vibration resistance	Malfunction	10 to 55 Hz, 1.5-mm double amplitude * 2
Shock resistance	Destruction	1,000 m/s² max.
Shock resistance	Malfunction	300 m/² max. * 1 * 2
Durability	Mechanical	1,000,000 operations min.
Durability	Electrical	500,000 operations min.
Degree of protection		IP00
Degree of protection against electric shock		Class I
Proof tracking index (PTI)		175
Ambient operating temperature		-25 ° C to 80 ° C (with no icing)
Ambient operating humidity		35% to 85%RH
Weight		Approx. 22 to 58 g

*1. The value is for the pin plunger. (Contact your OMRON representative for other models.)
*2. Malfunction: 1 ms max.

Contact Specification

Contacts	Shape	Rivet
	Material	Silver alloy
	Gap (standard value)	0.5 mm
Inrush current	NC	75 A max.
Inrush current	NO	75 A max.

last update: September 15, 2023

Product Category

Switches
- Basic Switches
  - Basic Switches (Z-Size)

Top of page