20Amp DC12V DC24V HRG78 Alarm relay
Product Features
Compact Size , efficient and reliable
The HRG78 relay adopts a miniaturized design, suitable for limited space scenarios. It has high reliability and can operate normally in various harsh environmental conditions. Its unique working principle ensures long-term stability and high efficiency performance. The HRG78 relay can quickly respond to control signals, achieve rapid circuit switching, and ensure the normal operation of electrical equipment.


Voltage Rating and Temperature Range
Designed for low-voltage applications, generally operating at either 12V or 24V DC, which is standard in most automotive and marine environments.Operates effectively within a wide temperature range (typically from -40°C to +85°C), ensuring performance in various weather conditions.
Wire length can be customized
Specification:
① Part No. | ||||||
HRG78 - S - DC12V - C - X | ② Enclosure :Plastic sealed | |||||
③ Coil Voltage : | ||||||
① ② ③ ④ ⑤ | DC 6 ,9,12, 24V | |||||
④ Contact form: | ||||||
C : 1C/O A: 1N/O | ||||||
⑤ Special requirment |
Specification:
Contact | Characteristics | ||||||
Contact Form | 1 Form A, 1 Form C | Insulation resistance | Min 100MΩ(500VDC) | ||||
Contact Material | Ag Alloy | Dielectric Strength | Between contact 550VAC 1min | ||||
Contact Resistance | 50 mΩ(6VDC 1A) | Between coil &contact 550VAC 1min | |||||
Contact Rating(Resistance Load) | Operate time | ≤ 10 ms | |||||
20A 14VDC | Release time | ≤ 10 ms | |||||
20A 125VAC | Shock Resistance | Endurance | 100 m/s2 | ||||
Damage | 1000 m/s2 | ||||||
Max Switching Voltage | 20 VDC | Vibration Resistance | 10-55 HZ 1.5mm DA | ||||
Max Switching Current | 20A | Humidity | 35%-95% RH | ||||
Max Switching Power | Ambient Temperature | -40 ℃ to 85℃ | |||||
Electrical Life | 100,000 ops | Weigt | Approx. 6.0g | ||||
Mechanical Life | 5,000,000 ops | Noted :the data are initial value |
Coil Data
600 mW | ||||||||
Nominal Voltage VDC | Operate Voltage Max VDC | Release Voltage Min VDC | Max Voltage VDC | Coil Resistance Ω +/- 10% | ||||
6 | 3.6 | 0.6 | 12 | 60 | ||||
9 | 5.40 | 0.90 | 18.00 | 135 | ||||
12 | 7.20 | 1.20 | 24.00 | 240 | ||||
24 | 14.40 | 2.40 | 48.00 | 960 | ||||
800mW | ||||||||
Nominal Voltage VDC | Operate Voltage Max VDC | Release Voltage Min VDC | Max Voltage VDC | Coil Resistance Ω +/- 10% | ||||
6 | 3.6 | 0.6 | 12 | 45 | ||||
9 | 5.40 | 0.90 | 18.00 | 100 | ||||
12 | 7.20 | 1.20 | 24.00 | 180 | ||||
24 | 14.40 | 2.40 | 48.00 | 720 |
Dimension
Tolerance ±0.2
