RH3B-D-DC125V

The IDEC RH3B-D-DC125V is a high-quality relay designed for various industrial and commercial applications. Known for its reliability and performance, this relay is part of IDEC's extensive range of control and automation products. The RH3B-D-DC125V is particularly suitable for applications requiring switching of high currents and voltages, making it a popular choice among engineers and technicians in the field.

### Overview

The RH3B-D-DC125V is an electromagnetic relay that operates on a DC voltage of 125V. It is designed to control electrical circuits by opening and closing contacts in response to an input signal. This relay is ideal for use in automation systems, control panels, and various electrical devices where reliable switching is essential.

### Key Features

1. High Voltage Rating: The relay is rated for a coil voltage of 125V DC, allowing it to handle a wide range of applications, including those that require higher voltage control.

2. Contact Configuration: The RH3B-D-DC125V features a double-pole double-throw (DPDT) contact configuration. This allows for versatile switching options, enabling the relay to control multiple circuits simultaneously.

3. Current Rating: The relay can handle a maximum switching current of 10A, making it suitable for controlling loads such as motors, lights, and other electrical devices.

4. Compact Design: The relay is designed to be compact, making it easy to integrate into control panels and other confined spaces without sacrificing performance.

5. Durability: The RH3B-D-DC125V is built to withstand harsh operating conditions, with a robust construction that ensures long-term reliability and performance.

6. Easy Installation: The relay features standard mounting options, allowing for straightforward installation in various applications. It is compatible with standard relay sockets, making it easy to replace or upgrade.

### Specifications

- Model: IDEC RH3B-D-DC125V
- Coil Voltage: 125V DC
- Contact Configuration: DPDT (Double-Pole Double-Throw)
- Maximum Switching Current: 10A
- Maximum Switching Voltage: 250V AC / 30V DC
- Coil Resistance: Approximately 1,600 ohms
- Contact Rating: 10A at 250V AC, 10A at 30V DC
- Operating Temperature Range: -40°C to +70°C
- Mechanical Life: 10 million operations (minimum)
- Electrical Life: 100,000 operations at rated load
- Mounting Type: Socket mountable
- Dimensions: Approximately 29.5 mm x 25.5 mm x 40 mm (L x W x H)

### Applications

The IDEC RH3B-D-DC125V relay is suitable for a wide range of applications, including:

- Industrial Automation: Used in control systems for machinery and equipment, allowing for automated operation and control.
- Lighting Control: Ideal for controlling lighting circuits in commercial and industrial settings.
- Motor Control: Suitable for switching motors on and off in various applications, including HVAC systems and conveyor belts.
- Home Automation: Can be used in smart home systems to control various electrical devices and appliances.
- Safety Systems: Employed in safety interlock systems to ensure that machinery operates safely and reliably.

### Conclusion

In summary, the IDEC RH3B-D-DC125V relay is a versatile and reliable component that plays a crucial role in various electrical and automation applications. With its high voltage rating, robust construction, and flexible contact configuration, it is an excellent choice for engineers and technicians looking for a dependable relay solution. Whether used in industrial automation, lighting control, or home automation systems, the RH3B-D-DC125V is designed to meet the demands of modern electrical applications while ensuring long-lasting performance and reliability.