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CyberPower OL3KRM Essential Online 3000VA/2.4kW Double-Conversion UPS - 2U Rack-Mountable - 120V AC - 6x NEMA 5-20R + 1x L5-30R Outlets
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Product Features
Product Overview
The CyberPower Essential Online OL3KRM is a 3000VA/2400W double-conversion online UPS engineered for mission-critical environments where power quality and availability are non-negotiable. This 2U rack-mountable unit provides pure sine wave output with zero transfer time, ensuring continuous power conditioning for sensitive servers, networking equipment, and storage systems. Its double-conversion topology continuously converts incoming AC power to DC and back to clean AC, offering complete isolation from utility power anomalies.
Designed for data centers, server rooms, and network closets, the OL3KRM features hot-swappable batteries, comprehensive SNMP/HTTP remote management, and robust surge protection with a 710-joule rating. The unit maintains over 96% efficiency in ECO mode while providing adjustable output voltage and wide input voltage tolerance for reliable operation in varying power conditions. With six NEMA 5-20R and one NEMA L5-30R outlets, it supports mixed equipment loads in rack deployments.
This UPS delivers enterprise-grade protection with features like cold start capability, built-in bypass switching, audible alarms, and LED status indicators. The front-panel LCD display provides real-time monitoring of power status, battery health, and load conditions. Engineered for single-phase power systems, the OL3KRM operates with input frequencies from 40-70 Hz and delivers output at 50/60 Hz, making it suitable for international deployment scenarios where power characteristics may vary.
Technical Overview
The OL3KRM employs double-conversion online technology that provides the highest level of power conditioning available in UPS systems. This architecture continuously converts incoming AC power to DC and then back to clean AC output, ensuring complete isolation from utility power issues with zero transfer time. The pure sine wave output maintains compatibility with sensitive electronic equipment, while the 0ns transfer eliminates any interruption during power transitions or failures.
Power specifications include 3 kVA/2.4 kW capacity with 0.99 input power factor and 0.8 output power factor. The unit accepts 120V AC input with a wide operating range of 100-125V AC and 60-69V AC, delivering adjustable output voltage from 100-125V AC. Electrical protection features include 710-joule surge energy rating, EMI/RFI noise filtering, circuit breaker protection, and overload protection. The single-phase design operates with input frequency range of 40-70 Hz and delivers output at 50/60 Hz.
Battery configuration consists of four 12V sealed lead-acid batteries with 7000mAh capacity each, providing 2.2 minutes of runtime at full load and 7.5 minutes at half load. The hot-swappable design allows battery replacement without powering down connected equipment, with typical recharge time of 4 hours. Management capabilities include SNMP/HTTP remote monitoring, serial and USB connectivity, EPO port for emergency shutdown, and USB HID compliant port for direct computer communication.
Key Product Advantages
The OL3KRM combines enterprise power protection with rack-optimized design for seamless integration into IT infrastructure. Its online double-conversion technology provides the highest level of power conditioning available, making it ideal for protecting sensitive servers, networking equipment, and storage systems.
Zero Transfer Time Protection
Double-conversion topology eliminates transfer time completely, ensuring uninterrupted power to connected equipment during utility power failures or fluctuations.
- Continuous power conditioning
- No switching delay
- Complete isolation from grid anomalies
Enterprise Management Capabilities
SNMP/HTTP remote monitoring enables centralized management of power status, battery health, and environmental conditions across multiple UPS units.
- Network-wide visibility
- Proactive alerts
- Integration with existing management systems
Maintenance-Friendly Design
Hot-swappable batteries allow replacement without powering down connected equipment, minimizing downtime during maintenance procedures.
- Field-replaceable batteries
- No service interruption
- User-serviceable components
Deployment / Use Cases
The CyberPower OL3KRM is engineered for environments where power quality and availability are non-negotiable. Its rack-mountable 2U design makes it particularly suitable for data center deployments where space optimization is critical.
In server room applications, the UPS protects rack-mounted servers, network switches, and storage arrays from power disturbances. The multiple outlet configuration supports mixed equipment loads, while the pure sine wave output ensures compatibility with power supplies in modern server hardware.
Relevant product facts for this section include Plug/Connector Type: NEMA L5-30P, Receptacle Type: NEMA 5-20R,NEMA L5-30R, Receptacle Detail: 6 x NEMA 5-20R,1 x NEMA L5-30R, Load Capacity (VA): 3 kVA. When those details are considered together, they give buyers a clearer picture of how the product is equipped, how it connects, and what kind of day-to-day role it is meant to support.
Data Center Power Protection
Provides clean, regulated power to server racks, network equipment, and storage systems in colocation facilities and enterprise data centers.
Network Infrastructure Support
Protects core networking equipment, VoIP systems, and security appliances in telecommunications closets and network operation centers.
Physical Profile
Designed for standard 19-inch equipment racks, the OL3KRM occupies 2U of vertical space with dimensions of 3.43 inches high, 17.05 inches wide, and 18.31 inches deep. The silver finish matches professional rack equipment, while the 48.28-pound weight reflects its robust construction and battery capacity.
Front-panel accessibility includes an LCD display for status monitoring, LED indicators for quick visual assessment, and management ports for connectivity. The unit operates within a temperature range of 32°F to 104°F (0°C to 40°C) with thermal dissipation of 712 BTU/h under full load conditions.
- Width
- 17.05" (433 mm)
- Depth
- 18.31" (465 mm)
- Height
- 3.43" (87 mm)
- Weight
- 55.3 dB(A)
- Length
- 10 ft (3.05 m)
Highlights
- 3000VA/2400W double-conversion online UPS with pure sine wave output
- 2U rack-mountable design for data center and server room deployment
- Zero transfer time ensures uninterrupted power to critical equipment
- Hot-swappable batteries enable maintenance without downtime
- SNMP/HTTP remote monitoring for enterprise management
- 6 × NEMA 5-20R and 1 × NEMA L5-30R outlets for mixed equipment loads
- 96% efficiency in ECO mode reduces operating costs
- 3-year limited warranty with Energy Star and RoHS compliance
Specifications
| Specifications | |
|---|---|
| Manufacturer | CyberPower Systems, Inc |
| Manufacturer Part Number | OL3KRM |
| Brand Name | CyberPower |
| Product Line | Essential Online |
| Product Model | OL3KRM |
| Product Name | Essential Online OL3KRM 3000VA Rack-mountable UPS |
| Product Type | Double Conversion Online UPS |
| Technical Information | |
| Plug/Connector Type | NEMA L5-30P |
| Receptacle Type | NEMA 5-20R,NEMA L5-30R |
| Receptacle Detail | 6 x NEMA 5-20R,1 x NEMA L5-30R |
| Overload Protection | Yes |
| Cord Length | 10 ft (3.05 m) |
| Transfer Time | 0 ns |
| EMI/RFI Noise Filter | Yes |
| Phase | Single Phase |
| Energy Saving | ECO Mode Efficiency >96% |
| Application/Usage | Mission Critical Equipment,Equipment,Generator,Business,Enterprise |
| Surge Suppression | Yes |
| Features | Cold Start Function,Built-in Bypass Switch,Audible Alarm |
| Power Description | |
| Load Capacity (VA) | 3 kVA |
| Load Capacity (Watt) | 2.40 kW |
| Input Voltage | 120 V AC |
| Input Voltage Range | 100 V AC - 125 V AC,60 V AC - 69 V AC |
| Output Voltage | 100 V AC,110 V AC,115 V AC,120 V AC,125 V AC |
| Input Frequency | 40 Hz,70 Hz |
| Output Frequency | 50 Hz,60 Hz |
| Waveform Type | Simulated Sine Wave,Sine Wave |
| Surge Energy Rating | 710 J |
| Circuit Breaker | Yes |
| Input Power Factor | 0.99 |
| Output Power Factor | 0.8 |
| Display & Graphics | |
| Display | LCD |
| Management | |
| Network Management | SNMP/HTTP Remote Monitoring |
| Alarm | Battery Mode |
| Controls/Indicators | |
| Status Indicators | LED Indicators: Power On |
| Interfaces/Ports | |
| Serial Port | Yes |
| USB | Yes |
| EPO Port | Yes |
| USB (HID Compliant) Port | Yes |
| Battery Information | |
| Number of Batteries | 4 |
| Battery Characteristics | Sealed |
| Battery Chemistry | Lead Acid |
| Battery Size | 12V |
| Battery Capacity | 7000 mAh |
| Backup/Run Time (Full Load) | 2.20 Minute |
| Backup/Run Time (Half Load) | 7.50 Minute |
| Hot Swappable | Yes |
| Typical Battery Recharge Time | 4 Hour |
| Replaceable Battery | Yes |
| Environmental Conditions | |
| Maximum Operating Elevation | 9843 ft (3000146.40 mm) |
| Maximum Storage Elevation | 49213 ft (15000122.40 mm) |
| Storage Temperature | 5°F (-15°C) - 113°F (45°C) |
| Storage Relative Humidity | 0% - 1% |
| Minimum Operating Temperature | 32°F (0°C) |
| Maximum Operating Temperature | 104°F (40°C) |
| Sound Emission (A-Weighted) | 55.3 dB(A) |
| Thermal Dissipation | 712 BTU/h |
| Physical Characteristics | |
| Product Color | Silver |
| Height | 3.43" (87 mm) |
| Width | 17.05" (433 mm) |
| Depth | 18.31" (465 mm) |
| Rack Height | 2U |
| Form Factor | Rack-mountable |
| Weight (Approximate) | 48.28 lb (21899.44 g) |
| Miscellaneous | |
| Energy Star | Yes |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS) |
| Warranty | |
| Limited Warranty | 3 Year |
User Manual
FAQ
What is the power capacity of the CyberPower OL3KRM UPS?
The CyberPower OL3KRM provides 3000VA (3 kVA) and 2400W of power capacity. This double-conversion online UPS is designed to support mission-critical equipment like servers, networking gear, and storage systems in rack-mounted environments.
What runtime can I expect at full and half load?
At full load (2400W), the UPS provides 2.2 minutes of runtime. At half load (1200W), runtime extends to 7.5 minutes. These figures help determine how long connected equipment can operate during a power outage before an orderly shutdown.
How many outlets does this UPS have and what types?
The OL3KRM features seven outlets total: six NEMA 5-20R outlets and one NEMA L5-30R outlet. This configuration supports mixed equipment loads commonly found in server racks and network closets, allowing both standard and higher-power devices to receive battery backup protection.
What input and output voltage does this UPS support?
The UPS accepts 120V AC input with a wide operating range of 100-125V AC and 60-69V AC. It delivers adjustable output voltage from 100-125V AC, providing flexibility for different equipment requirements and stable power in varying utility conditions.
Is this UPS designed for rack or tower deployment?
The CyberPower OL3KRM is a 2U rack-mountable UPS designed specifically for standard 19-inch equipment racks. Its 3.43-inch height, 17.05-inch width, and 18.31-inch depth make it ideal for data center, server room, and network closet installations where space optimization is critical.
What management and connectivity options are included?
The UPS includes SNMP/HTTP remote monitoring for network-wide management, plus serial, USB, EPO, and USB HID compliant ports. The front-panel LCD display and LED indicators provide real-time status monitoring of power conditions, battery health, and load levels for both local and remote administration.
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