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Key-type Selector Switches


30-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. Workability and safety improvements.


Certified Safety Standard Ratings

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

E76675), CSA C22.2 No.14

TÜV (EN60947-5-1)

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

CCC (GB/T14048.5)

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

Application Standards

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


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
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 --- ---
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.

Specifications (When Operation Unit, Mounting Collar, and Contact Blocks Are Combined)


Item Key-type Selector Switches
Allowable operating
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 1,000 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
Electric shock protection class Class II
PTI (tracking characteristic) 175
Degree of contamination
(application environment)
3 (EN 60947-5-1)
Weight Approx. 75 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
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)

A30NK Specifications 14

Key-type Selector Switches
2 positions 3 positions
Linking example 3449_sp_4_1 3449_sp_4_2

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