The MAMAC Systems CU-870 is a solid-core current sensor engineered for reliable, non-invasive current monitoring in commercial HVAC and building automation applications. Designed for straightforward installation, the solid-core form factor allows conductors to pass directly through the sensor aperture without interrupting the circuit, making it an ideal solution for monitoring motor loads, fan circuits, pump circuits, and other electrical equipment.
Selectable Current Ranges
The CU-870 offers three field-selectable current measurement ranges to accommodate a wide variety of load types and circuit sizes:
- 10 Amp range — ideal for smaller loads and low-draw equipment
- 20 Amp range — suited for mid-range motors and fan applications
- 50 Amp range — designed for larger loads and high-draw circuits
Signal Output & Power Supply
- 4-20mA analog output signal for direct integration with building automation systems (BAS), DDC controllers, and data acquisition equipment
- 15–40Vdc supply voltage for broad compatibility with standard BAS and controls power supplies
Key Features
- Solid-core design for secure, stable current measurement
- Non-invasive installation — no circuit interruption required
- Industry-standard 4-20mA output for universal controller compatibility
- Wide supply voltage range (15–40Vdc) for flexible power sourcing
- Multiple amp ranges support diverse HVAC and mechanical system applications
- Compact form factor suitable for panel and field installations
Typical Applications
- Motor current monitoring (fans, pumps, compressors)
- Energy monitoring and fault detection in BAS environments
- Equipment run-status verification
- Load trending and demand management
The MAMAC Systems CU-870 delivers the accuracy and versatility that HVAC controls professionals demand, making it a trusted choice for new construction and retrofit building automation projects alike.
