Omron, A22NK Series

Easy to Use

• You can connect up to three Contact Blocks in one stage for multistage expansion.
• Screw terminal structure is compatible with round crimp terminals. (Screw terminal block type)
• The terminals can be secured even when a contact block is mounted. (Screw terminal block type)
• Contact Blocks can be attached in any direction for easy assembly.

Miniaturization

• No need for extra lateral space because of the modified wiring direction. (Push-In Plus terminal block type)
• Compact design.

Safety

• Easy-to-operate lock lever for secure locking.
• Easy-mounting Contact Blocks provide finger protection.
• No loose connections of wiring means maintenance-free use. (Push-In Plus terminal block type)

Product Lineup

• Meet global safety standards.
• Can be installed in two types of panel hole dimensions: 22.3 and 25.5 dia.
• The buttons and bezels come in a wide variety of colors, shapes, and materials.
• Standard-feature degree of protection: IP66 and NEMA 13.

Certified Safety Standard Ratings

UL 508 (File No. E76675), CSA C22.2 No.14

6 A 240 VAC, 10 A 120 VAC

TÜV (EN60947-5-1)

AC-15 3 A 240 VAC
DC-13 4 A 24 VDC

CCC (GB14048.5)

AC-15 3 A 240 VAC
DC-13 4 A 24 VDC

Application Standards

UL1059 and UL486E (Push-In Plus terminal block type)

Ratings

Contacts (Standard Load)

Rated insulation voltage		600 V
Rated carry current		10 A
Rated voltage		24 V	120 V	240 V	380 V	440 V
AC at 50/60 Hz	Resistive load (AC-12)	10 A	10 A	6 A	2A	2 A
AC at 50/60 Hz	Inductive load (AC-15)	10 A	6 A	3 A	1.9 A	1.6 A
DC	Resistive load (DC-12)	8 A	2.2 A	1.1 A	---	---
DC	Inductive load (DC-13)	4 A	1.1 A	0.55 A	---	---

Note: 1. The above ratings were obtained by conducting tests under the following conditions.
        (1) Ambient temperature: 20 ±2°C
        (2) Ambient humidity: 65% ±5% RH
        (3) Operating frequency: 30 operations/minute
         2. Minimum applicable load: 10 mA at 5 VDC.

Characteristics

Item		Key-type Selector Switches
Allowable operating frequency	Mechanical	30 operations/minute max.
Allowable operating frequency	Electrical	30 operations/minute max.
Insulation resistance		100 MΩ min. (at 500 VDC)
Contact resistance		100 mΩ max. (initial value)
Dielectric strength	Between terminals of same polarity	2,500 VAC at 50/60 Hz for 1 min. (initial value)
Dielectric strength	Between each terminal and ground	2,500 VAC at 50/60 Hz for 1 min. (initial value)
Vibration resistance	Malfunction	10 to 55 Hz, 1.5-mm double amplitude (malfunction within 1 ms)
Shock resistance	Malfunction	1,000 m/s² max. (malfunction within 1 ms)
Durability	Mechanical	500,000 operations min. (Switches with 3 positions: 300,000 operations min.)
Durability	Electrical	500,000 operations min. (Switches with 3 positions: 300,000 operations min.) (250 VAC, 3 A, with an inductive load having power factor cos θ = 0.4)
*Ambient operating temperature1**		-25 to 70°C
Ambient operating humidity		35% to 85% RH
*Ambient storage temperature1**		-40 to 80°C
*Degree of protection2**		Conforming to IP66, NEMA13
Electric shock protection class		Class II
PTI (tracking characteristic)		175
Degree of contamination (application environment)		3 (EN 60947-5-1)
Weight		Approx. 65 g (for 1NC/1NO)

*1. With no icing or condensation.
*2. Degree of protection from the front of the panel.

Operating Characteristics (for SPST-NO/SPST-NC)

Item	Key-type Selector Switches
Item	Manual reset	Automatic reset
Total travel force (torque) (maximum TTF)	0.6 N·m	0.6 N·m
Total travel (TT)	2 positions: Approx. 90°, 3 positions: Approx. 45°
Resetting force (torque) (RF)	0.5 N·m max.	---

Examples of Linked Contact Blocks (Screw terminal block type)

	Key-type Selector Switches
	2 positions	3 positions
Linking example

Note: If you increase the number of Contact Blocks, evaluate the Switch under actual working conditions before permanent installation and use the Switch within a number of switching operations that will not adversely affect the Switch’s performance.

(Unit: mm)

Lighted and Non-lighted Key-type Selection Switches

Two-position Switches with Plastic Bezels

A22NK-2B[]-01[]A-G

A22NK-2B[]-01[]A-P

Three-position Switches with Plastic Bezels

A22NK-3B[]-01[]A-G

A22NK-3B[]-01[]A-P

Two-position Switches with Brushed Metal Bezels

A22NK-2M[]-01[]A-G

A22NK-2M[]-01[]A-P

Three-position Switches with Brushed Metal Bezels

A22NK-3M[]-01[]A-G

A22NK-3M[]-01[]A-P

Two-position Switches with Metal Bezels

A22NK-2R[]-01[]A-G

A22NK-2R[]-01[]A-P

Three-position Switches with Metal Bezels

A22NK-3R[]-01[]A-G

A22NK-3R[]-01[]A-P

Depth with Linked Units

(Screw terminal block type)

Depth when a double-contact unit is mounted

(Push-In Plus terminal block type)

Subassemblies (Common)

Mounting Collar

A22NZ-H-01

Screw terminal block

Contact Blocks

A22NZ-S-G1[]

Push-In Plus Terminal Blocks

Contact Blocks (Single Contact)

A22NZ-S-P1[]

Contact Blocks (Double Contact)

A22NZ-S-P2[]

Accessories and Tools

Protective Cover

A22NZ-A303

Plastic Hole Plug

A22NZ-A-401

Metal Hole Plug

A22NZ-A-402

Lock Ring

A22NZ-A-403

Lock Ring

A22NZ-A-50501

Reinforcement Plate

A22NZ-A-C01

Control Box

A22NZ-A-B01Y

Sealing cap

For Flat Models A22Z-3600F

For projection models A22Z-3600T

For full-guard models A22Z-3600G

Resin Attachment for 30 dia.

A22Z-A30

Legend Plate Frames

General A22NZ-A-50103

Large A22NZ-A-51103

Legend Plates

General A22Z-3443[]-[]

Large A22Z-3453[]

Tightening Wrench

A22NZ-A-301

LED Lamp Extractor

A22NZ-A-302

Cap Tightening Wrench

A22Z-3908

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