22-mm dia. Key-type Selector Switches. Control panel miniaturization through a more compact design and modified wiring direction. Addition of Push-In Plus terminal blocks for easy wiring.

 

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

 

Ratings / Characteristics

Item		Key-type Selector Switches
Allowable  operating  frequency	Mechanical	30 operations/minute max.
	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)
	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	1000 m/s2 max. (malfunction within 1 ms)
Durability	Mechanical	500,000 operations min. (Switches with 3 positions: 300,000 operations min.)
	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 temperature*1		-25 to 70°C
Ambient operating humidity		35% to 85% RH
Ambient storage temperature*1		-40 to 80°C
Degree of protection*2		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.

Downloads

Document	File Type	File Size	Download
A22NK Series Datasheet	PDF	65.1 MB

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