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ACU 3HNA024871-001

ACU 3HNA024871-001 – ABB Robotics Power Distribution Unit
Type: Power Distribution & Safety Module
Function: Centralized power management for ABB robot systems

Key Features:

Integrated circuit protection (fuses/breakers)

Dual-voltage distribution:

400-480V AC (motor power)

24V DC (control circuits)

Safety compliance: STO (Safe Torque Off)

Diagnostic LEDs for quick fault identification

Compatibility:

ABB IRC5 controllers

IRB 4600/6600/6700 robot arms

Certifications: CE, UL, IEC 61508 (SIL 3)

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ACU 3HNA024871-001 – Technical Specifications
General Information
Manufacturer: ABB Robotics

Model: ACU 3HNA024871-001

Type: Power Distribution & Safety Unit

Application: Centralized power management for IRC5-based robot systems

Electrical Parameters
Input Power:

High-Voltage: 400-480V AC (3-phase, 50/60Hz)

Low-Voltage: 24V DC (control circuits)

Output Channels:

Motor Power: 6 protected outputs (configurable fuses)

Control Power: 8 channels (24V DC, 5A max per channel)

Safety Circuits:

STO (Safe Torque Off)

SS1 (Safe Stop 1)

Functional Features
Modular Design: Hot-swappable fuse modules

Monitoring:

LED indicators for power/fault status

Current sensing for overload detection

Protections:

Short-circuit (I²t characteristic)

Over-temperature

Mechanical & Environmental
Mounting: Integrated in IRC5 controller cabinet

Dimensions: 250 × 150 × 80 mm (W×H×D)

Operating Temperature: 0°C to +45°C

Humidity: ≤95% RH (non-condensing)

Protection Class: IP54 (dust/splash resistant)

Compatibility
Robot Models:

IRB 4600 (all variants)

IRB 6600/6700

Controller: IRC5 (single/double cabinet)

Certifications
Standards:

IEC 61508 (SIL 3)

CE, UL, RoHS

EMC: EN 61000-6-2/4