Description

Application Scenarios:

At a North Sea offshore platform, a fire and gas detection system powered by AC 800M controllers experienced intermittent shutdowns due to aging power supplies overheating in confined enclosures. After upgrading to dual PP845 3BSE042235R1 units in redundant configuration, the system achieved true N+1 resilience: when one unit failed during a summer heatwave, the other instantly assumed full load without triggering alarms. The fanless design eliminated dust accumulation issues, while built-in LED and software diagnostics allowed technicians to replace the faulty unit during routine rounds—without halting production. The PP845 3BSE042235R1 became the new standard for all safety-critical power zones on the installation.

Main Parameters Value/Description

Product Model PP845 3BSE042235R1

Manufacturer ABB

Product Category Redundant Power Supply Module (PSU)

Output Voltage 24 V DC ±1% (regulated)

Maximum Output Power 240 W continuous

Input Voltage Range 85–264 V AC (47–63 Hz) or 100–370 V DC

Efficiency >89% at full load (reduces heat and energy cost)

Redundancy Support Parallel operation with active current sharing; hot-swappable

Cooling Method Convection-cooled (fanless), ideal for dusty/hazardous areas

Operating Temperature -25°C to +70°C (derated above 60°C)

Mounting DIN rail (35 mm) or ABB AC 800M rack (e.g., TB511/TB521)

Protection Features Overvoltage, overcurrent, short-circuit, and thermal shutdown

Certifications CE, UL 61010-1. CSA C22.2 No. 61010-1. IEC 61000-6-2. ATEX (optional)

Technical Principles and Innovative Values:

Innovation Point 1: The PP845 3BSE042235R1 employs active current sharing technology that dynamically balances load between parallel units—preventing “current hogging” that can cause premature failure in passive-diode redundant systems. This extends service life and ensures true fault tolerance in 24/7 operations.

Innovation Point 2: Integrated health monitoring reports real-time parameters—output voltage, load percentage, internal temperature—via the AC 800M backplane to Control Builder M. Unlike basic PSUs that only signal “OK/FAIL,” the PP845 3BSE042235R1 enables predictive maintenance by flagging gradual degradation (e.g., capacitor aging) before catastrophic failure.

Innovation Point 3: Its universal input accepts both AC and DC mains—a critical advantage in marine or backup-power scenarios where the primary source may switch between shore power (AC) and battery banks (DC). This flexibility simplifies power architecture in hybrid energy systems.

Application Cases and Industry Value:

In a South American copper smelter, the PP845 3BSE042235R1 powers AC 800M controllers managing furnace temperature and off-gas scrubbing. Ambient temperatures regularly exceed 60°C, yet the fanless design has operated reliably for over five years—outperforming earlier fan-cooled competitors that clogged with conductive dust. In a European biopharma facility, redundant PP845 3BSE042235R1 pairs support sterile filling lines where power interruption could spoil $ 2M batches; zero downtime incidents have been recorded since deployment. These cases underscore its role not just as a power source, but as a foundational element of process integrity.

Installation, Maintenance, and Full-Cycle Support:

Installing the PP845 3BSE042235R1 requires secure DIN rail mounting, proper input wiring with fused disconnect, and (for redundancy) connection via the ABB redundancy cable. Ensure adequate ventilation—even though fanless, it needs ≥50 mm clearance on all sides for convection cooling. During commissioning, verify load sharing balance using Control Builder M diagnostics. For maintenance, the hot-swap capability allows replacement under power: simply unlock the front handle, slide out the unit, and insert a new one—no system shutdown required.

Every PP845 3BSE042235R1 we supply undergoes 100% functional testing: output regulation under 0–100% load steps, redundancy switchover validation, and 48-hour burn-in at elevated temperature. Units are inspected for capacitor bulging, solder integrity, and label authenticity. We provide a 12-month warranty, original calibration records, and expert guidance on redundancy best practices. Whether you’re building a new LNG terminal control system or replacing failed PSUs in a legacy pulp mill, our tested PP845 3BSE042235R1 modules ensure your ABB infrastructure stays powered—safely, efficiently, and without compromise.

Contact us for a customized solution—whether you need a single PP845 3BSE042235R1 for emergency repair or a full redundant set for a greenfield power plant, we deliver genuine, validated, and supported ABB power intelligence with global logistics and engineering backing.