Building Automation


Industrial Automation


Power Automation & Safety

Bangladesh Distributor

A-20G-B

General-purpose Basic Switch

Image

High-capacity, Pin plunger (2.3 dia., Stainless steel plunger), Snap action, Self-reset type, Single-Pole, Double-Throw type, SPDT, Screw terminal (M4)

Actuator Pin plunger (2.3 dia., Stainless steel plunger)
Sensitivity Standard sensitivity
Contact form SPDT
Terminal Screw terminal (M4)
Rated current 20A
Degree of protection General type
IEC60529 (JEM): IP00

Item list of A

  • Ratings/Performance
ActuatorPin plunger (2.3 dia., Stainless steel plunger)
SensitivityStandard sensitivity
Operation typeGeneral type
Operating mechanismSnap action
Switching mechanismSelf-reset type
Contact methodSingle-Pole, Double-Throw type
Contact formSPDT
Contact gap0.5 mm
TerminalScrew terminal (M4)
LoadHigh-capacity
Rated current20A
Ratings (AC) Non-Inductive loadRated voltage: 125 VAC / Resistive load: 20 A(NC) 20 A(NO) / Lamp load: 7.5 A(NC) 7.5 A(NO)
Rated voltage: 250 VAC / Resistive load: 20 A(NC) 20 A(NO) / Lamp load: 7.5 A(NC) 7.5 A(NO)
Rated voltage: 500 VAC / Resistive load: 15 A(NC) 15 A(NO) / Lamp load: 4 A(NC) 4 A(NO)
Ratings (AC) Inductive loadRated voltage: 125 VAC / Inductive load: 20 A(NC) 20 A(NO) / Motor load: 12.5 A(NC) 12.5 A(NO)
Rated voltage: 250 VAC / Inductive load: 20 A(NC) 20 A(NO) / Motor load: 8.3 A(NC) 8.3 A(NO)
Rated voltage: 500 VAC / Inductive load: 10 A(NC) 10 A(NO) / Motor load: 2 A(NC) 2 A(NO)
Ratings (DC) Non-Inductive loadRated voltage: 8 VDC / Resistive load: 20 A(NC) 20 A(NO) / Lamp load: 3 A(NC) 1.5 A(NO)
Rated voltage: 14 VDC / Resistive load: 20 A(NC) 20 A(NO) / Lamp load: 3 A(NC) 1.5 A(NO)
Rated voltage: 30 VDC / Resistive load: 6 A(NC) 6 A(NO) / Lamp load: 3 A(NC) 1.5 A(NO)
Rated voltage: 125 VDC / Resistive load: 0.5 A(NC) 0.5 A(NO) / Lamp load: 0.5 A(NC) 0.5 A(NO)
Rated voltage: 250 VDC / Resistive load: 0.25 A(NC) 0.25 A(NO) / Lamp load: 0.25 A(NC) 0.25 A(NO)
Ratings (DC) Inductive loadRated voltage: 8 VDC / Inductive load: 20 A(NC) 20 A(NO) / Motor load: 12.5 A(NC) 12.5 A(NO)
Rated voltage: 14 VDC / Inductive load: 15 A(NC) 15 A(NO) / Motor load: 12.5 A(NC) 12.5 A(NO)
Rated voltage: 30 VDC / Inductive load: 5 A(NC) 5 A(NO) / Motor load: 5 A(NC) 5 A(NO)
Rated voltage: 125 VDC / Inductive load: 0.05 A(NC) 0.05 A(NO) / Motor load: 0.05 A(NC) 0.05 A(NO)
Rated voltage: 250 VDC / Inductive load: 0.03 A(NC) 0.03 A(NO) / Motor load: 0.03 A(NC) 0.03 A(NO)
Ratings explanationLamp load has an inrush current of 10 times the steady-state current. Inductive load has a power factor of 0.4 Min. (AC) and a time constant of 7 ms Max. (DC). Motor load has an inrush current of 6 times the steady-state current.
Inrush currentNC: 75 A
NO: 75 A
Ambient temperatureOperating : -25 to +80 ℃
Storage : -25 to 80 ℃
( with no icing or condensation )
Ambient humidityOperating: 35 to 85%RH
Storage: 35 to 85%RH
Speed of permissible operation0.01 mm/s to 1000 mm/s
Permissible operating frequency (Mechanically)240 operations / 1 minute Max.
Permissible operating frequency (Electrically)20 operations / 1 minute Max.
Contact resistance15 mΩ (Initial value. Measuring method is voltage drop method at 1 A, 6 to 8 VDC.)
Insulation resistanceBetween each terminal of the same polarities: 100 MΩ min.
Between live-metallic part and ground: 100 MΩ min.
Between each terminal and non-live-metallic part: 100 MΩ min.
(at 500 VDC Megger)
Dielectric strengthBetween each terminal of the same polarities: 1000 V min.
Between live-metallic part and ground: 2000 V min.
Between each terminal and non-live-metallic part: 2000 V min.
(50/60 Hz for 1 min)
Mechanical durability1,000,000 operations Min.
Electrical durability500,000 operations Min. (rating load)
Vibration resistance (Malfunction)Vibration frequency range: 10 to 55 Hz, Double amplitude: 1.5 mm, Malfunction: 1 ms max. at the free position and the total travel position.
Shock resistance (Destruction)1,000 m/s**2
Shock resistance (Malfunction)Malfunction time is 1 ms Max. at the free position and the total travel position at 300 m/s**2.
Degree of protectionGeneral type
IEC60529 (JEM): IP00
Mounting MethodMounting with screw
Operating Force (OF)Standard value 3.92 to 6.13 N
Release Force (RF)Standard value 2.79 N min.
Pre-Travel (PT)Standard value 1.3 mm max.
Over-Travel (OT)Standard value 0.25 mm min.
Movement Differential (MD)Standard value 0.2 mm max.
Operating Position (OP)Standard value 15.9 to 16.7 mm
  • Mounting holes

Screw mounting hole dimensions

  • Type of terminal and form

  • Terminals

接点構成図

Series

General-purpose Basic Switch

A

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