ABB 3BHB045647R0003 Isolated-Output Regulated Industrial Power Supply

Description

3BHB045647R0003

The ABB 3BHB045647R0003 functions as a specialized power supply in ABB’s automation stack, combining regulated AC-to-DC conversion with 2.5kVrms galvanic isolation—far beyond the protection offered by standard power modules. It mounts to ABB’s standard TS 35 DIN rail or control cabinet backplanes, drawing 110/230V AC input (auto-ranging to match facility power) and delivering stable 24V DC output to connected ABB components (e.g., AC 800M I/O modules, safety logic solvers). Unlike non-isolated alternatives, its isolation barrier blocks electrical noise, ground loops, and voltage spikes from reaching control hardware—critical in environments where VFDs or motors generate constant interference.

3BHB045647R0003

The module also integrates with ABB’s diagnostic ecosystem: via Control Builder M software, engineers can monitor real-time output voltage, load levels, and isolation integrity, receiving alerts for issues like declining insulation resistance before they impact operations. By sitting between the facility’s noisy power grid and ABB’s control hardware, the ABB 3BHB045647R0003 ensures a clean, isolated power chain—making it the backbone of stable automation in high-interference settings.

Main features and advantages:

Choosing the ABB 3BHB045647R0003 delivers unique value that solves noise-related challenges plaguing standard power supplies. Its 2.5kVrms isolation eliminates the need for external filters or ground loop isolators—components that add cost, complexity, and potential failure points to control systems. This integration reduces engineering overhead: engineers don’t need to design custom noise-mitigation setups, cutting commissioning time by up to 40% compared to pairing non-isolated supplies with third-party filters. The module’s rugged design—including a dust-resistant housing and wide temperature range—ensures it performs reliably in harsh settings, from the electrical noise of automotive assembly lines to the humidity of metalworking facilities. Over time, its robust isolation and high MTBF (over 120,000 hours) minimize unplanned downtime: unlike non-isolated modules that degrade faster under noise stress, the ABB 3BHB045647R0003 maintains consistent performance, reducing replacement costs and maintenance workload. Additionally, its diagnostic features enable predictive maintenance: tracking isolation resistance trends lets teams replace the module proactively during scheduled shutdowns, avoiding emergency repairs that disrupt production.

Application fields:

The ABB 3BHB045647R0003 is purpose-built for industries where electrical noise threatens operational continuity—excelling in three key sectors. In automotive manufacturing, it powers ABB’s robotic control modules and assembly line DCS systems, isolating them from the noise generated by welding robots and conveyor VFDs to prevent false robot shutdowns. In metalworking facilities, it supplies clean power to ABB’s process analyzers and temperature control modules, shielding them from interference from induction heaters and large motors that would otherwise corrupt temperature readings. It’s also critical in mining operations, where it powers ABB’s underground control systems—isolating them from the noise of heavy mining equipment and ensuring reliable communication with surface-level DCS. In each use case, the ABB 3BHB045647R0003 meets the demand for critical uptime: its isolation blocks noise that would cause standard supplies to fail, while its regulated output ensures ABB components receive consistent power—even in the most interference-heavy environments.

Related products:

ABB 3BHB045647R0001 – Non-isolated variant (60W) for low-noise environments (e.g., chemical labs).

ABB 3BHB045648R0003 – Higher-power isolated model (100W) for heavy-load control systems (e.g., large DCS segments).

ABB 3BHB045647R0002 – Extended-temperature isolated module (-25°C to 70°C) for outdoor/mining use.

ABB 3BHB036488R0103 – Redundant isolated supply for SIL 3 safety systems (e.g., emergency shutdowns).

ABB 3BHB045649R0003 – DC-input isolated module (24V DC in) for battery-backed mobile control setups.

ABB 3BHB045647R0003 + 3BHB045650R0001 – Bundle with isolated power distribution module for multi-component setups.

ABB 3BHB045647R0004 – Higher-isolation variant (5kVrms) for high-voltage industrial environments (e.g., power substations).

Installation and maintenance:

Before installing the ABB 3BHB045647R0003, first verify that your ABB control system (e.g., AC 800M) supports the module’s isolation diagnostic signals—older DCS firmware may need an update to monitor isolation resistance. Next, calculate the total load of connected components (e.g., I/O modules, relays) to avoid exceeding the 60W max output; overloading can trigger the module’s protective shutdown and stress the isolation barrier. During setup, use a megohmmeter to test the input-output isolation resistance (should be ≥100MΩ at 500V DC) to confirm the barrier is intact—this step prevents installing a defective unit that could fail under noise stress.

For maintenance, conduct monthly checks of the LED status: steady green indicates normal operation, while a yellow light signals declining isolation resistance (address immediately to avoid failure). Every six months, re-test isolation resistance and inspect terminals for corrosion (common in humid metalworking environments), torquing them to ABB’s 0.8 N·m specification to maintain a secure connection. Annual load testing with a variable load bank ensures the module’s output remains regulated under peak conditions.

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