Product Details Portlet

G4A PCB Power Relay

Miniature Single-pole Relay with 80A Surge Current and 20A Switching Current

  • Capable of Switching Motor Load of 80-A Surge Current and 20A Switching/Cut-off Current
  • Miniature, relay with high switching power and long endurance.
  • Creepage distance conforms to UL and CSA standards.
  • Highly noise-resistive insulation materials employed.
  • Standard model available with flux protection construction.
RoHS適合
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Quick-connect/PCB coil terminals
Contact form
Load Contact Terminal
Coil terminal
Model
Rated voltage
Minimun
packing unit
SPST-NO(1a) #250 quick-connect terminals PCB terminals G4A-1A-E 12, 24 VDC 50 pcs/tray
PCB terminals
Contact form
Load Contact Terminal
Coil terminal
Model
Rated voltage
Minimun
packing unit
SPST-NO(1a) PCB terminals PCB terminals G4A-1A-PE 12, 24 VDC 50 pcs/tray
Note: When ordering, add the rated coil voltage to the model number.
G4A
  However, the notation of the coil voltage on the product case as well as on the packing will be marked as □□ VDC.
Coil Ratings
Rated voltage 12 VDC 24 VDC
Rated current 75 mA 37.5 mA
Coil resistance 160 Ω 640 Ω
Must operate voltage 70% of rated voltage max.
Must release voltage 10% of rated voltage min.
Max. permissible voltage 160% of rated voltage at (23ºC)
Power consumption Approx. 0.9 W
Note: 1. The rated current and coil resistance are measured at a coil temperature of 23ºC with a tolerance of ±10%.
  2. The inductances shown above are reference values.
  3. Operating characteristics are measured at a coil temperature of 23ºC.
  4. Max. permissible voltage refers to the maximum value in a varying range of operating power voltage, not a continuous voltage.

Contact Ratings
Contact type Single
Contact material Ag-Alloy (Cd free)
Rated carry current 20 A
Max. switching voltage 250 VAC
Max. switching current 20 A

Motor Ratings
Load conditions
Switching frequency
Electrical endurance
250 VAC:
Inrush current: 80 A, 0.3 s (cosφ= 0.7)
Break current: 20 A (cosφ = 0.9)
ON: 1.5 s
OFF:1.5 s
200,000 operations

Inverter Ratings
Load conditions
Switching frequency
Electrical endurance
100 VAC:
Inrush current: 200 A (0-P)
Break current: 20 A
ON: 3 s
OFF:5 s
30,000 operations

Overload Durability (Reference Value)
Load conditions
Switching frequency
Electrical endurance
250 VAC:
Inrush current: 80 A (cosφ= 0.7)
Break current: 80 A (cosφ = 0.7)
ON: 1.5 s
OFF:99 s
1,500 operations

Characteristics
Contact resistance *1 100 mΩ max.
Operate time 20 ms max.
Release time 10 ms max.
Max. operating frequency Mechanical 18,000 operations/hr
Insulation resistance *2 1,000 MΩ min. (at 500 VDC)
Dielectric strength Between coil and contacts 4,500 VAC 50/60 Hz for 1 min
Between contacts of the same polarity 1,000 VAC 50/60 Hz for 1 min
Impulse withstand voltage Between coil and contacts 8.5 kV 1.2 x 50
Vibration resistance Destruction 10 to 55 to 10 Hz, 0.75 mm single amplitude
(1.5 mm double amplitude)
Malfunction 10 to 55 to 10 Hz, 0.75 mm single amplitude
(1.5 mm double amplitude)
Shock resistance Destruction 1,000 m/s2
Malfunction 200 m/s2
Durability Mechanical 2,000,000 operations min. (at 18,000 operations/hr)
Motor load 200,000 operations min.
(ON/OFF: 1.5 s)
Inverter load 30,000 operations min.
(ON: 3 s, OFF: 5 s)
Failure rate (P level) (reference value) *3 100 mA at 5 VDC
Ambient operating temperature Operating: -20ºC to 60ºC (with no icing or condensation)
Ambient operating humidity Operating: 5% to 85%
Weight Approx. 23 g
NOTE:   The values here are initial values.
  1. Measurement conditions: 5 VDC, 1 A, voltage drop method.
  2. Measurement conditions: The insulation resistance was measured with a 500 VDC megohmmeter at the same locations as the dielectric strength was measured.
  3. This value was measured at a switching frequency of 120 operations/min.
#250 quick-connect/PCB coil terminals
G4A-1A-E
G4A:Dimensions1
Mounting Holes
(BOTTOM VIEW)
G4A:Dimensions2

Terminal Arrangement /
Internal Connections

  (Top View)      (Bottom View)
G4A:Dimensions3
Straight PCB/PCB coil terminals
G4A-1A-PE
G4A:Dimensions4
PCB Mounting Holes
(BOTTOM VIEW)
G4A:Dimensions5
Terminal Arrangement /
Internal Connections

(BOTTOM VIEW)
G4A:Dimensions6

Correct Use

●Mounting

When mounting two or more relays side by side, provide a minimum space of 3 mm between relays.

●Terminal Connection

The terminals fit FASTON receptacle 250 and are suitable for positive-lock mounting. Do not apply excessive force on the terminals when mounting or dismounting the relay.
The following positive-lock connectors made by AMP are recommended.



●Other Precautions

This Relay is suitable for power load switching of air-conditioning compressors and power supplies, etc. Do not use the G4A to switch micro loads less than 100 mA, such as in signal applications.