250W CRPS Redundant Switching Power Supply Replacement for Delta DPS-250AB-81 A DPS-250AB-81 B, Hot-Plug Server PSU for DVR, CVR, NAS & Rack Storage Devices

This 250W CRPS hot-swappable redundant switching power supply is fully compatible replacement for Delta original DPS-250AB-81 A and DPS-250AB-81 B power modules, widely applied to rack-mounted DVR, CVR video recorders, network NAS storage and industrial rack servers.

Designed according to standard CRPS redundant power specifications, it supports 1+1 parallel redundant mode to prevent system shutdown caused by single power module failure. Adopting 100240V full-range universal AC input and active power factor correction, it fits global power grids and improves energy efficiency to reduce heat output under full load.

Stable regulated DC outputs fully satisfy power consumption of multi-channel surveillance cameras, multi-hard-disk storage arrays and industrial control mainboards. Built-in multi-layer safety protection circuits will automatically cut off power once overload, short circuit or overheating occurs to protect critical storage and monitoring devices.

Comes with quick-release pull tab for tool-free hot swapping without shutting down the whole machine. The intelligent variable-speed cooling fan adjusts rotation speed according to internal temperature to lower operating noise under light load. Gold-plated CRPS communication interface supports PMBus real-time monitoring of voltage, current and fault information.

All units pass full-load aging test before delivery, with UL, CE, FCC safety certifications. The sturdy metal casing is suitable for long-term uninterrupted use in security monitoring rooms, small data rooms and industrial workshops.