Vivotek HLG-120H-48 48VDC 120W Industrial Power Supply

Vivotek HLG-120H-48 48VDC 120W Industrial Power Supply

The Vivotek HLG-120H-48 is a robust industrial-grade power supply engineered for demanding surveillance and security applications. With IP67 certification and extreme temperature operation spanning -40°C to 70°C, this unit delivers reliable 48VDC/120W output across a wide global input range of 90-305VAC. Built for critical infrastructure where power continuity is non-negotiable, it combines high efficiency with comprehensive protection mechanisms ideal for outdoor, indoor, and harsh-environment installations.

Key Features

• 48VDC/120W Output – Stable 2.5A rated current with ±1.0% voltage tolerance
• IP67 Protection – Fully sealed against dust and water immersion for outdoor durability
• Wide Input Range – 90-305VAC, 47-63Hz global compatibility with PF >0.93 at full load
• Extreme Temperature Capability – Operates reliably from -40°C to +70°C
• Auto-Recovery Protection – Overcurrent limiting, overvoltage shutdown, and over-temperature cutoff
• Compact Footprint – 220×68×38.8mm dimensions for flexible mounting in confined spaces
• High MTBF – 192.2K hours minimum mean time between failures

Technical Specifications

• Efficiency: 93.5% typical, minimizing heat generation and power waste
• Voltage Regulation: ±0.5% line regulation, ±0.5% load regulation for precision output
• Ripple & Noise: 200mVp-p maximum for clean, stable power delivery
• Hold-up Time: 12ms at full load (230VAC/115VAC) maintains output during brief AC interruptions
• Inrush Current: 60A cold start at 230VAC with soft-start management
• EMC Compliance: EN55015, EN55022 Class B, EN61000 immunity standards
• Safety Certifications: UL8750, CSA C22.2, TUV EN61347, ENEC approval
• Isolation: 3.75KVAC I/P-O/P withstand voltage with 100MΩ isolation resistance

Applications

• IP Camera Power – Centralized supply for multi-camera surveillance arrays
• Outdoor Security Installations – Dust and water-sealed operation in exposed environments
• Industrial Networks – Edge devices, access control systems, and network infrastructure
• Remote/Harsh Locations – Extreme temperature rating supports arctic and desert deployments
• Critical Infrastructure – High MTBF and auto-recovery features for uninterrupted operation

Ted Perry

The HLG-120H-48 represents industrial-grade power supply engineering optimized for surveillance ecosystems. Its ±0.5% regulation across both line and load conditions ensures PoE devices and security cameras receive consistent voltage, critical for maintaining video quality and device longevity. The IP67 rating paired with -40°C to +70°C operation removes environmental constraints—this unit handles condensation-prone enclosures and sun-exposed outdoor cabinets equally well.

Auto-recovery protection (constant current limiting on overcurrent/short circuit, voltage shutdown on overvoltage, temperature cutoff on thermal fault) means the supply protects downstream equipment without requiring manual intervention. The 93.5% efficiency is significant in large-scale deployments: reduced heat dissipation simplifies thermal management in compact junction boxes. MTBF of 192.2K hours and universal voltage input (90-305VAC) make this a long-term asset in evolving infrastructure.

For system integrators, the compact 220mm length allows DIN-rail mounting in standard surveillance cabinets alongside PoE switches and recorders.