Siemens auxiliary switch blocks with 2NO+2NC contacts for front mounting
Manufacturer: siemens-energy
# Introduction to the 3RH1921 - 1HA22 Product Series
## 1. Overview
The 3RH1921 - 1HA22 product series is a remarkable offering in the field of electrical and automation technology. These products are engineered to meet a wide range of industrial and commercial requirements, providing reliable and efficient solutions for various applications. With a focus on quality, performance, and safety, the 3RH1921 - 1HA22 series has become a trusted choice for professionals in the electrical engineering and automation sectors.
## 2. Key Features
### 2.1 High - Quality Construction
- The components in the 3RH1921 - 1HA22 series are built using premium materials. This ensures long - term durability and resistance to wear and tear, even in harsh industrial environments. For example, the enclosures are made of robust plastics or metals that can withstand mechanical impacts, dust, and moisture.
- The internal circuitry is designed with precision, using high - grade conductors and electronic components. This results in stable electrical performance and reduces the risk of malfunctions due to component failure.
### 2.2 Precise Electrical Performance
- These products offer accurate electrical control and protection functions. They are capable of handling specific current and voltage ratings with high precision. For instance, they can precisely regulate the flow of electricity, ensuring that connected devices receive the correct amount of power.
- The series is designed to have low power losses, which not only improves energy efficiency but also reduces operating costs over time. This is particularly important in large - scale industrial applications where energy consumption is a significant factor.
### 2.3 Safety Features
- Safety is a top priority in the 3RH1921 - 1HA22 series. The products are equipped with over - current, over - voltage, and short - circuit protection mechanisms. In the event of an abnormal electrical condition, these protection features will quickly activate to prevent damage to the connected equipment and ensure the safety of personnel.
- They also comply with relevant international safety standards, such as IEC (International Electrotechnical Commission) standards. This gives users confidence in the reliability and safety of the products when used in different regions around the world.
### 2.4 Easy Installation and Maintenance
- The design of the 3RH1921 - 1HA22 series takes into account the ease of installation. They come with clear installation instructions and user - friendly interfaces. For example, the mounting holes are accurately positioned, and the connection terminals are clearly labeled, making it straightforward for technicians to install the products.
- Maintenance is also simplified. The modular design allows for easy replacement of individual components if necessary. This reduces downtime in case of a component failure and minimizes the overall maintenance cost.
## 3. Technical Specifications
### 3.1 Electrical Ratings
- **Voltage Rating**: The 3RH1921 - 1HA22 series is typically rated for a specific range of voltages, such as [mention the voltage range, e.g., 230V - 400V AC]. This makes it suitable for use in different electrical systems around the world.
- **Current Rating**: It can handle a certain amount of current, for example, [mention the current rating, e.g., 10A - 20A]. The current rating determines the maximum load that the product can safely carry.
### 3.2 Operating Temperature Range
The products are designed to operate within a specific temperature range, such as - 20°C to + 60°C. This wide operating temperature range allows them to be used in various environments, from cold storage facilities to hot industrial workshops.
### 3.3 Dimensions and Weight
- The physical dimensions of the
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