Powerbox PB251A-CM SERIES DC-UPS / Battery Charger

The Powerbox PB251A-CM Series DC-UPS and Battery Charger is a compact, high-reliability power solution designed to deliver up to 330W of continuous DC power with intelligent battery backup functionality. It supports critical infrastructure across a wide range of sectors with a focus on reliability, simplicity, and long-term serviceability.

Engineered for electronic security and access control systems, the PB251A-CM is commonly deployed in field cabinets and secure enclosures, powering readers, locks, controllers, and supporting equipment. It is also a trusted solution for industrial automation applications, including extensive use within water utilities, where dependable DC power and backup capability are essential for telemetry, monitoring, and control equipment in remote or harsh environments.

Key features include constant float voltage, current limiting, and independent battery charging outputs with integrated battery low-voltage disconnect (LVD). LED indicators and alarm relays provide real-time DC and battery status, while optional features such as battery charge current limiting, SNMP V1-based network monitoring, and temperature compensation further enhance battery performance and system integration.

Available in 13.8Vdc (up to 20A) and 27.6Vdc (up to 12A) configurations, the PB251A-CM Series is convection-cooled and designed for dependable operation in a wide range of installation environments.

Fully compliant with AS/NZS60950 safety standards and C-Tick certified for EMC, the PB251A-CM Series is the trusted choice for compact, reliable DC-UPS installations across security, automation, and utility sectors.