Accurate liquid level detection is critical for industrial automation systems, and stainless steel float level switches are among the most reliable solutions. ELECALL offers two advanced variants equipped with Hirschmann connectors: the single-ball float switch and the double-ball float switch. These switches combine durable stainless steel construction with a professional industrial connector for easy installation, secure wiring, and maintenance efficiency.

Hirschmann Connector Advantage
Both single-ball and double-ball models feature a Hirschmann plug-and-play connector, which offers several benefits for industrial environments:
- Quick installation and replacement without removing the entire cable
- Stable, secure connection resistant to loosening and oxidation
- Better shielding performance against electromagnetic interference
- Organized wiring for industrial equipment such as pumps, motors, and inverters
This professional connector significantly reduces downtime and simplifies servicing in demanding industrial environments.
Working Principle
Both models operate using a reed switch mechanism inside a stainless steel rod. The stainless steel float moves with the liquid level, actuating the internal reed switch to provide a reliable ON/OFF signal. The stainless steel rod ensures corrosion resistance, mechanical strength, and long service life, even in challenging conditions.
Single-Ball Float Switch with Hirschmann Connector
The single-ball version is designed for single-point liquid level detection, suitable for basic ON/OFF control. Its compact and robust design allows installation in tanks or pipelines with limited space.
Key features:
- Single switching point for simple liquid level monitoring
- Braided wire with Hirschmann connector for easy maintenance
- Durable stainless steel float and rod for long-term operation
Typical Applications:
- Industrial water storage tanks
- Cooling systems
- Wastewater treatment systems
- General-purpose pump control
Double-Ball Float Switch with Hirschmann Connector
The double-ball version incorporates two floats on a single rod, enabling dual-point level detection for high and low liquid level control. This design is ideal for applications that require precise level monitoring and automation.
Key features:
- Two switching points for high/low level detection
- PVC-insulated wire with Hirschmann connector for durability and reliable connection
- Accurate control in industrial processes such as chemical tanks or boiler water monitoring
Typical Applications:
- Chemical storage tanks with high/low alarm control
- Boiler water level management
- Industrial automation requiring dual-point detection
- Electroplating or corrosive liquid processes
Key Differences
| Feature | Single-Ball | Double-Ball |
|---|---|---|
| Number of switching points | 1 | 2 |
| Complexity | Simple | Moderate |
| Application flexibility | Basic level control | Dual-point or range control |
| Wire type | Braided with Hirschmann connector | PVC-insulated with Hirschmann connector |
| Installation | Compact tanks or pipes | Tanks requiring high/low level monitoring |
| Suitable liquids | Water, mildly corrosive liquids | Water, chemical, or corrosive liquids |
Why Choose ELECALL Hirschmann Float Switches
ELECALL has been a global industrial automation provider since 2008, specializing in high-quality sensors, switches, and automation components. Both single-ball and double-ball Hirschmann float switches are designed to meet industrial standards for reliability, corrosion resistance, and durability.
With ISO9001 certification and decades of experience supplying industrial solutions worldwide, ELECALL ensures that every float switch provides long-term performance and maintenance efficiency, making it a reliable choice for engineers and system integrators. (ELECALL About Us)
Selection Guide
- Choose Single-Ball Hirschmann Float Switch for single-point level monitoring, cost-effective applications, or compact installations.
- Choose Double-Ball Hirschmann Float Switch for high/low level monitoring, dual-point control, or applications requiring precise liquid level management.
By understanding the advantages of Hirschmann connectors and the difference between single and double floats, industrial users can select the optimal float switch for their process control needs, ensuring reliable operation and long-term durability.





