1. General Information

• Part Number: A81L-0001-0165

• Manufacturer: FANUC

• Type: Three-phase AC line reactor (for PSMR/PSMRi, high-power servo/spindle drives)

• Rated Current: 208 A continuous

• Inductance: 0.07 mH

• Rated Voltage: 380–480 VAC (50/60 Hz)

• Application: Harmonic suppression, EMI filtering, inrush current limiting for large FANUC CNC/robot systems

• Dimensions: ~400 × 400 × 400 mm (16 × 16 × 16 in)

• Weight: ~29 kg (64 lb)

• Mounting: Flange-type panel mount

• 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

• Inductance Tolerance: ±5%

• Reactance: Low impedance, high harmonic attenuation

3. Environmental Ratings

• Operating Temp: 0 °C to +40 °C

• Storage Temp: −20 °C to +50 °C

• Humidity: ≤80% RH (non-condensing)

• Altitude: ≤1,000 m

• Vibration: 0.5 g max

4. Compatibility

FANUC Amplifiers

• PSMR / PSMRi series (high-power power supply modules)

• Large-capacity SVU / SVUC servo amplifiers

• High-torque spindle amplifier modules

CNC Systems

• 30i / 31i / 32i‑B (high-end CNC)

• 16i / 18i / 21i‑B (large machine tools)

• Heavy-duty machine tools & robot controllers

5. Features

• Ultra-High Current: 208A continuous, for 15kW+ drive systems

• Harmonic Reduction: Cuts THD, improves power factor, reduces overheating

• Surge & Noise Protection: Blocks voltage spikes, EMI, and line surges

• Industrial-Grade Build: Vibration-resistant, durable insulation

• Stable Inductance: ±5% tolerance for consistent filtering

6. Installation Instructions

1. Power Off: Install only when system power is fully disconnected.

2. Mounting: Horizontal panel mount; ≥150 mm clearance all around for cooling.

3. Wiring:

   • Input: 3-phase AC line (L1/L2/L3)

   • Output: To amplifier power input terminals

   • Torque: 1.8–2.0 N·m (high-current terminals)

4. Grounding: Chassis to protective earth (PE) for safety.

5. Location: Avoid heat sources, direct sunlight, and corrosive gases.

7. Safety Warnings

• High Voltage & High Current: Risk of severe electric shock; only qualified personnel.

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

• Overload: Never exceed 208A continuous current.

• Dry Use: Keep away from water, moisture, and condensation.

8. Related Part Numbers

• A81L-0001-0157: 110A, 0.07mH (lower current)

• A81L-0001-0101#C: 63A, 0.25mH (10.5kW)

• A81L-0001-0187: 125A, 0.045mH (high-frequency)