1. General Information

• Part Number: A81L-0001-0083#3C

• Manufacturer: FANUC

• Type: Three-phase AC line reactor (line filter)

• Rated Current: 24 A

• Inductance: 0.15 mH

• Rated Voltage: 253 / 264 VAC

• Application: Harmonic suppression & noise reduction for FANUC servo/ spindle amplifiers and CNC power supplies

• Weight: Approx. 2.4 lbs (1.1 kg)

• Mounting: Panel-mount (flange type)

• Warranty: 12 months (original FANUC new)

2. Electrical Specifications

• Phase: 3-phase

• Frequency: 50 / 60 Hz

• Insulation Class: Class B (130 °C)

• Dielectric Strength: 2,000 VAC / 1 min

• Impedance: Low impedance, high harmonic attenuation

3. Environmental Ratings

• Operating Temp: 0 °C to +40 °C

• Storage Temp: −20 °C to +60 °C

• Humidity: ≤85% RH (non-condensing)

• Altitude: ≤1,000 m

• Vibration: 0.5 g max

4. Compatibility

FANUC Amplifiers

• αi series (SVM, SPM)

• βi series

• 0i‑D / 0i‑MF / 0i‑TF servo amplifiers

CNC Systems

• 0i‑C / 0i‑D

• 16i / 18i / 21i‑B

• 30i / 31i / 32i‑B

Typical Use

• Installed between 3‑phase input and amplifier power input to reduce harmonics, voltage spikes, and EMI noise.

5. Features

• Harmonic Reduction: Lowers THD (Total Harmonic Distortion) in drive systems.

• Noise Suppression: Blocks line surges and high‑frequency interference.

• Compact & Rugged: Industrial‑grade construction, compact footprint.

• High Reliability: Minimizes drive overheating and tripping issues.

• Easy Installation: Flange‑mount design with standard terminal connections.

6. Installation Instructions

1. Disconnect Power: Install only when system power is fully OFF.

2. Orientation: Mount in horizontal position; allow ≥50 mm clearance on all sides for cooling.

3. Wiring:

   • Connect 3‑phase AC line (L1/L2/L3) to reactor input terminals.

   • Connect reactor output terminals to amplifier power input.

   • Torque terminals to manufacturer’s specs (typically 1.2–1.5 N·m).

4. Grounding: Connect reactor chassis to protective earth (PE).

5. Avoid: Do not install near heat sources or in direct sunlight.

7. Safety Warnings

• High Voltage: Risk of electric shock; only qualified personnel should install/service.

• No Modification: Do not open or modify the reactor.

• Overload: Do not exceed rated 24 A continuous current.

• Dry Location: Keep away from water and corrosive gases.

8. Related Part Numbers

• A81L-0001-0083#3C01: 24A, 0.15mH (variant)

• A81L-0001-0101#C: 10.5 kW line reactor

• A81L-0001-0120: High-power line reactor