The Bently Nevada 3500/15-01-01-01 (bundled with 127610-01 power module and 125840-02 backup battery) is a redundant power supply system designed to provide uninterrupted 24VDC power to the 3500 series modular monitoring system, ensuring critical condition monitoring operations continue during mains power failures. The core 3500/15-01-01-01 is a single-slot power supply module accepting 85-264VAC input and delivering 24VDC at 5A, with power factor correction (PFC) for energy efficiency (up to 90%). The bundled 127610-01 is a redundant power module that operates in parallel with the core module, providing automatic failover in case of primary power supply failure. The 125840-02 backup battery (12VDC, 7Ah) offers up to 4 hours of backup power, ensuring continuous operation during extended power outages, with automatic recharging when mains power is restored. The system features comprehensive protection against overvoltage, overcurrent, short-circuit, and overtemperature, plus status monitoring via LED indicators and diagnostic signals to the 3500 rack controller. Constructed with rugged industrial-grade components, the system operates in temperatures from -40°C to +85°C, with humidity up to 95% non-condensing. It supports rack-mounted installation, with a total weight of 4.2kg (including battery), and complies with international standards including CE, UL, and CSA. Ideal for critical applications in power generation, oil & gas, and nuclear industries, this redundant power supply system ensures the 3500 series monitoring system remains operational 24/7, protecting high-value rotating machinery such as turbines, compressors, and generators from unplanned downtime due to power failures.