ABB 3BHE055094R0002 GBU72

Description

Detailed parameter table

ABB GBU72 3BHE055094R0002

Product introduction

The ABB 3BHE055094R0002 GBU72 is a high-reliability power supply module designed to deliver stable 24 VDC power to critical components in industrial control systems, such as PLCs, sensors, and actuators. As part of ABB’s industrial power solutions portfolio, the GBU72 is engineered to thrive in harsh industrial environments, ensuring uninterrupted operation of control systems even amid voltage fluctuations or temperature extremes.

This module converts three-phase 380 VAC input into regulated 24 VDC output, with precise voltage regulation (±0.5%) to protect sensitive electronics from damage. In manufacturing plants, the ABB 3BHE055094R0002 GBU72 serves as a backbone for automation networks, powering devices like proximity sensors on conveyor belts and control relays in motor panels. Its robust protection features and long service life make it a trusted choice for industries where downtime is costly, including automotive production, chemical processing, and energy distribution.

Core advantages and technical highlights

Precise voltage regulation: The ABB 3BHE055094R0002 GBU72 maintains output voltage within ±0.5% of 24 VDC, even when input voltage fluctuates by ±10%. This stability is critical for sensitive devices like analog sensors, which rely on consistent power to deliver accurate measurements. In a pharmaceutical packaging line, for example, the GBU72 ensures weight sensors (powered by 24 VDC) maintain ±0.1g accuracy, preventing underfilled or overfilled packages.

Comprehensive protection: Equipped with overvoltage, overcurrent, short-circuit, and overtemperature protection, the GBU72 safeguards both itself and connected equipment. If a sensor shorts out, the module’s overcurrent protection triggers within 50ms, cutting power to prevent damage to the supply or the PLC. Overtemperature protection (activating at 70°C) ensures the module shuts down gracefully in overheated cabinets, avoiding thermal damage during cooling system failures.

Industrial-grade durability: With an operating temperature range of -10°C to +60°C and natural convection cooling, the ABB 3BHE055094R0002 GBU72 performs reliably in unconditioned cabinets—from freezing warehouses to hot steel mills. Its DIN rail mounting design simplifies integration into standard control enclosures, while a rugged metal casing resists vibration and dust. The module’s MTBF of 100,000+ hours minimizes maintenance needs, reducing lifecycle costs.

Energy efficiency: Boasting ≥92% efficiency at full load, the GBU72 generates less waste heat, reducing the burden on cabinet cooling systems. In a large automotive plant with 50+ control cabinets, this efficiency translates to significant energy savings annually. Even at partial loads (30-70%), efficiency remains above 90%, making it ideal for systems with variable power demands.

Typical application scenarios

In automotive assembly plants, the ABB 3BHE055094R0002 GBU72 powers the control systems of robotic welding cells. It supplies 24 VDC to the robot’s PLC, position encoders, and safety relays, ensuring precise movement of welding arms. During peak production, when the plant’s three-phase power fluctuates, the GBU72’s voltage regulation prevents encoder errors that could misalign welds, maintaining product quality. Its overcurrent protection also shields the robot’s electronics if a welding gun shorts out, avoiding costly repairs.

In water treatment facilities, the GBU72 module powers SCADA system components, such as flow meters and valve actuators in filtration units. Mounted in outdoor cabinets exposed to temperature swings (-5°C to 50°C), the module’s wide operating range ensures consistent power to sensors monitoring chlorine levels. If a lightning strike causes a voltage surge on the 380 VAC line, the ABB 3BHE055094R0002 GBU72’s overvoltage protection clamps the surge, preventing damage to the SCADA controller and avoiding treatment process disruptions.

ABB GBU72 3BHE055094R0002

Related model recommendations

GBU71 3BHE055093R0001: A lower-current (10 A) variant of the GBU72, suitable for small control panels with fewer devices, such as laboratory automation setups.

S800I/O PM861: ABB’s PLC module that pairs with the GBU72—the GBU72 powers the PLC, while the PM861 processes control logic for industrial machines.

TB521: A terminal block accessory for the GBU72, simplifying wiring and adding surge protection for field devices connected to the module’s output.

GBU80 3BHE055095R0003: A higher-power (30 A) upgrade of the GBU72, ideal for systems with multiple actuators, like large conveyor networks in distribution centers.

ACS880-01: ABB’s frequency converter that can share a control cabinet with the GBU72—the module powers the converter’s control board, ensuring synchronized operation.

CI854: A communication module that, when powered by the GBU72, enables data transfer between the control system and cloud platforms for remote monitoring.

Installation, commissioning and maintenance instructions

Installation preparation: Before installing the ABB 3BHE055094R0002 GBU72, ensure the DIN rail is securely mounted in a cabinet with ambient temperature between -10°C and 60°C, and free from direct sunlight or water splashes. Use a multimeter to verify the three-phase input voltage is 380 VAC ±10% and properly grounded. Prepare 1.5 mm² copper wires for input (380 VAC) and 0.75 mm² wires for output (24 VDC), and label them to avoid reverse polarity. Wear insulated gloves when handling live wires, and disconnect the main power before wiring.

Maintenance suggestions: Inspect the GBU72 quarterly for dust buildup—use compressed air (max 5 bar) to clean vents, as clogged fins can reduce cooling efficiency. Check output voltage with a calibrated multimeter monthly; if it deviates beyond ±0.5%, verify input voltage or replace the module. For fault troubleshooting, refer to the LED status indicators: a red light indicates overcurrent/overtemperature, while a flashing green light signals input voltage issues. Replace faulty modules with genuine ABB GBU72 units to maintain warranty coverage, and store spares in a dry, temperature-controlled area.

Service and guarantee commitment

ABB backs the 3BHE055094R0002 GBU72 with a 3-year warranty, covering defects in materials and workmanship. This warranty includes free replacement of faulty modules and access to ABB’s global technical support team, available 24/7 to assist with installation or troubleshooting via phone or email.

For critical applications, ABB offers optional on-site commissioning services to ensure optimal installation. The company guarantees long-term availability of spare parts for at least 10 years post-launch, ensuring customers can maintain systems for decades. With a 99.9% field reliability rate, the ABB 3BHE055094R0002 GBU72 is backed by ABB’s legacy of industrial excellence, providing customers with confidence in uninterrupted system performance.