Indoor FTTx Series


  • Input voltage range: 90-264 VAC
  • On battery output voltage: 48 VDC
  • Rated power: 50W
  • Battery: 12V/20Ah
  • Intelligent control: Yes
  • Telemetry interface: Yes

Product Overview

Designed for interior use, CS50U48V Indoor CyberShield™ FTTx System supplies continuous 48 VDC to local power network interface devices (NID), cable telephone modems, wireless base stations, fiber to the home (FTTH), optical network terminals (ONT), and integrated access devices. Features of the CS50U48V include high-function design, cold start functionality, audible alarm signals with silence options, microprocessor intelligent control, a telemetry interface, optional extendable runtime, user-replaceable batteries, and LED indicators. It also comes with a three-year warranty.

Product Features
  • Indoor Design
    Provides durable casing to protect the model and keyhole slots for wall-mounting in locations such as garages, basements, and utility closets.
  • Cold Start Functionality
    Restores emergency power to the load after the installation of new batteries.
  • Telemetry Interface
    Provides alarm conditions to the ONT: On Battery, Replace Battery, Battery Missing, Low Battery.
  • Audible Alarms
    Signal conditions that may affect operation: On Battery and Low Battery.
  • Alarm Silence Button
    Selectable Enabled / Disabled.
  • LED Status Indicators
    Provide information about the control and operation of the model related to AC, output, and battery.
  • User Replaceable Batteries
    Can be changed by a technician when needed without replacing the entire model.
  • Three-Year Warranty
    Covers defects in materials and workmanship in the product under normal use and conditions within three years of the purchase date.
Expand All
Input Voltage Range 90 – 264 VAC
Input Frequency Range 47 – 70 Hz
Input Power Cord IEC320 C7 2-Prong Cord
Output Ground Reference Floating Ground
Cord length 10 ft.
On Battery Voltage 48 VDC
Battery Type Sealed Lead-Acid
Typical Recharge Time < 24 Hours
User Replaceable Yes
Battery Quantity 1
Battery Size 12V/20Ah
Replacement Battery N/A
DC Output
Rated Power 50 W
Efficiency (at Full Load) > 75%
Surge Protection & Filtering
Lightning / Surge Protection Yes
Warning Diagnostics
Audible Indicator Utility Failure

Low Battery

LED Indicators AC



Auto-Charge Yes
Communication Interface On Battery

Replace Battery

Missing Battery

Low Battery

Dimensions – L×W×D 30 × 28 × 9.9 cm
Weight 7.7 kg (with battery)
Operating Temperature 32 – 104°F (0 – 40°C)
Operating Humidity 0 – 95% (non-condensing)
Maximum Operating Elevation 10,000 ft (3,000 m)
Maximum Storage Elevation 50,000 ft (15,000 m)
Storage Temperature 5° – 113°F (-15 – 45°C)
Compliance UL60950-1

FCC Part 15 Class B

CISPR 22 Class B

Product Warranty 3 year
North America (NEMA 1-15) CS50U48V
Australian/New Zealand (AS/NZS) CS50U48V-AZ2
Canada (NEMA 1-15) CS50U48V-CA


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What is a hot-swappable battery?

A hot-swappable battery eliminates power-related downtime and ensures maximum power availability. All potential UPS maintenance, including complete power module exchange, can be performed without powering down connected equipment. As long as utility power is on, you may leave the UPS and connected equipment on while replacing a new battery.

Please contact our Tech Support department with installation, troubleshooting, or general product questions.
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 Model Output VoltageRated PowerExtended Runtime OptionBattery