Sentry Server-Technology Sentry 48VDC Remote Power Manager R4820L

The Sentry 48VDC Remote Power Manager R4820L is a specialized remote power management unit designed for -48VDC infrastructure systems. It delivers granular outlet-level control and real-time load monitoring, enabling remote power cycling and device rebooting without on-site technician dispatch. Built for critical environments including data centers and telecommunications facilities, this unit minimizes downtime through intelligent power distribution and protection.

Technical Specifications

• Input Voltage Range: -40 to -60 VDC


• Input Power Capacity: Up to 200A DC depending on terminal block configuration (¼" studs: 100A, 5/16" studs: 200A, #8 screws: 20A)


• Output Distribution: Maximum 24 directly attached devices; up to 104 devices when chained to additional Sentry RPMs


• Load Monitoring: Individual outlet and aggregate current measurement in amperes


• Output Protection: Per-outlet fuse or circuit breaker rated for hot disconnect (ratings: 10A, 15A, 20A, 25A, 30A, 40A, 50A, 60A)


• Operating Temperature: Tested and approved for 60°C (140°F) environments

Key Features

• Individual or grouped outlet power cycling for equipment reboots


• Outlet-level current monitoring for load planning and capacity forecasting


• Hot-disconnect rated output connections


• Intelligent Power Module (IPM) architecture for relay control and on/off management


• Scalable architecture supporting daisy-chain configuration

Typical Applications

• Data center power distribution and equipment management


• Telecommunications facility infrastructure control


• Remote device rebooting and power recovery operations


• Circuit-level load monitoring and utilization tracking

Compatibility & Integration Works with Intelligent Power Module (IPM) connectors for managed power distribution. Supports field configuration with variable-capacity input connectors to match facility requirements.