Mini current sensors are small devices that detect the presence of electrical current in a wire. They’re essential tools in building automation systems to monitor the status of equipment like fans, pumps, and lighting circuits.
What Is a Mini Current Sensor?
A mini current sensor is a compact sensor that clamps around or connects to a wire and detects when current is flowing. Many models include a built-in relay that triggers when a set current level is reached. These can be fixed or adjustable threshold devices and come in solid or split core styles.
Why Are They Used?
• Monitor equipment operation (ON/OFF status)
• Trigger alarms or automation sequences
• Track power usage
• Detect motor failure or belt loss in HVAC systems
Common Applications
• HVAC fans, motors, and pumps
• Lighting circuits
• Compressors and refrigeration
• Energy monitoring panels
• Industrial and commercial automation
Popular Brands to Know
• ACI (Automation Components Inc.) – Reliable, easy-to-install fixed and adjustable models.
• FDI (Functional Devices Inc.) – Known for RIB series with built-in relays (like RIBX24BA, RIBXLCRF).
• Veris (Hawkeye Series) – Industry staple for high-accuracy current monitoring and control.
• Senva – Sleek, modern sensors with smart features and quick setup.
• Dwyer – Rugged, versatile options used across HVAC and industrial markets.
Mini Current Sensors — What They Are and Why They Matter
