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Guard Lock Safety Key Selector Switch


The guard lock prevents accidental mode changes.

Certified Standards

Certification body Standards File No.
UL UL508, CSA C22.2 No.14 E76675
TÜV SÜD EN60947-5-1 (certified direct opening) Consult your OMRON representative for details.
CQC(CCC) GB140485 Consult your OMRON representative for details.
KOSHA KS C IEC 60947-5-1 Consult your OMRON representative for details.

Note: Only models with NC contacts have a direct opening mechanism.

Certified Standard Ratings

TÜV (EN60947-5-1)

Utilization category AC-15 DC-13
Rated operating current (Ie) 3 A 0.27 A
Rated operating voltage (Ue) 240 V 250 V

Note: Use a 10 A fuse type gI or gG that conforms to IEC60269 as a short-circuit protection device. This fuse is not built
          into the Switch.

Solenoid Coil Characteristics

Type 24 VDC
Rated operating voltage (100% ED) 24 VDC ±10%
Current consumption Approx. 88mA
Insulation Class A (130°C max.)


Model A22LK
Allowable operating
Mechanical 30 operations/minute max.
Electrical 30 operations/minute max.
Insulation resistance 100 MΩ min. (at 500 VDC)
Dielectric strength Between terminals of same polarity 2,500 VAC, 50/60Hz for 1min.
Between each terminal and ground 6,000 VAC, 50/60Hz for 1min.
Vibration resistance *1 10 to 55 Hz, 1.5mm double amplitude (within 1 ms)
Shock resistance Destruction 1000m/s2
Malfunction *1 300m/s2
Durability Mechanical 100,000 operations min.
Electrical 100,000 operations min.
Ambient operating temperature *2 -10 to +55°C
Ambient operating humidity 35% to 85%RH
Degree of protection *3 IP65 *3
Electric shock protection class Class II
Degree of contamination 3 (EN60947-5-1)

Note: 1. Do not allow the load current to exceed the rated value.
             2. The contact ON/OFF timing is not synchronized. Confirm performance before application.
             3. Once the contacts have been used to switch a load, however, they cannot be used to switch smaller loads. The
                   contact surfaces will become rough once they have been used and contact reliability for smaller loads may be
*1. Malfunction within 1 ms.
*2. With no icing or condensation.
*3. The degree of protection from the front of the panel.