Hobut – M100‑AA1 – 1‑Phase Self‑Powered RMS‑Calibrated Current Transducer

The Hobut M100‑AA1 is a single-phase, self-powered, average-sensing RMS-calibrated current transducer. It converts AC current (direct or via CT) into proportional DC signals (mA or V) without requiring auxiliary power—ideal for energy management systems, switchboards, generators, telemetry, and control systems.

Key Features:

• Manufacturer: Hobut (Howard Butler Ltd, UK)  

• Model / MPN: M100‑AA1

• Type: Self-powered average-sensing RMS-calibrated current transducer  

• Input Current:

  • Direct: 0.5–10 A AC

  • CT-connected: 1 or 5 A  

• Output Options: 0–1/5/10/20 mA or 0–5/10 V DC  

• Frequency Range: 50/60/400 Hz  

• Working Range: 10–125 % of nominal current  

• Overload Capacity: Up to 4× continuous; 50× for 1 s  

• Isolation: 4 kV between input and output  

• Power Consumption: <1 VA; self-powered  

• Housing: DIN-rail mount, 55 mm width, ~0.3 kg  

• Typical Applications: Energy management, telemetry, panel meters, PLCs, generators and switchboards