Powerbox PB356 SERIES Smart DC-UPS / Battery Charger

The Powerbox PB356 Series Smart DC-UPS and Battery Charger delivers reliable power and advanced battery management for critical industrial and security applications. Proudly designed and manufactured in Australia by Powerbox, it reflects over four decades of local engineering expertise and is built to meet the stringent demands of Australian conditions and standards.

Housed in a compact, service-friendly enclosure with an IEC mains inlet and pluggable terminal blocks, the PB356 Series is ideal for integration into access control systems, control panels, and secure enclosures. It provides true off-line DC-UPS functionality, ensuring uninterrupted power to connected loads during mains failure by seamlessly switching to battery supply without dips or disruption.

Key features include ultra-low noise output, selectable 2-step or 3-step charging modes, automatic battery condition testing (BCT), and robust protection mechanisms such as battery low-voltage disconnect, overtemperature alarms, and an internal electronic circuit breaker. Comprehensive system monitoring is available via status LEDs, four alarm relays, and an optional Ethernet interface with embedded web server and SNMP support.

Available in 13.8Vdc (10.0A) and 27.6Vdc (5.0A) configurations, the PB356 Series is fully compliant with AS/NZS 60950.1 safety and AS/NZS CISPR11 Class B EMC standards—making it a trusted and proven solution for intelligent DC power and backup in demanding industrial, telecommunications and high-security environments.