KSTAR UDC9101S-RT 1kVA / 900W Online Rack-Mount UPS with LCD & SNMP Support

About the Product

1000VA / 900W Online Double Conversion UPS
Rack/Tower 2U design for flexible installation
Pure sine wave output for sensitive equipment
8 IEC C13 outlets for multiple devices
USB, RS232, RJ45 & optional SNMP monitoring
Hot-swappable batteries for easy maintenance
Ideal for servers, networking equipment, and data centers

Description
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1:1ph Rack-Mounted Online UPS, 1kVA/900w, PF0.9, 240v/50Hz, 24vdcStandard Unit with 2pcs*9ah/12v(2.5kg) batts, IEC sockets, British cable Supports external battery connection With SNMP Slot, USB port, USB cable Without SNMP card, Output cable, kits

Description

The KSTAR UDC9101S‑RT is a high-performance 1kVA / 900W Online Double Conversion Uninterruptible Power Supply (UPS) designed to deliver reliable and continuous power to critical electronic equipment. By using advanced online double-conversion technology, the UPS constantly converts incoming AC power to DC and then back to AC, ensuring that connected devices receive stable, clean, and uninterrupted power even during power outages or voltage fluctuations.

This UPS features a rack/tower convertible design, allowing it to be installed either in a 19-inch server rack (2U) or used as a standalone tower unit. Its compact form factor makes it ideal for server rooms, IT cabinets, networking environments, and small data centers where space efficiency and reliable power protection are essential.

The UDC9101S-RT also delivers a pure sine wave output, which is crucial for sensitive equipment such as servers, switches, storage systems, and telecommunications devices. With its intelligent LCD display and communication interfaces such as USB, RS232, and optional SNMP, users can easily monitor UPS performance, battery status, load levels, and power conditions in real time.

Built with advanced protection mechanisms, the UPS safeguards connected equipment from overloads, short circuits, voltage spikes, and electrical noise. The integrated battery backup ensures that systems remain operational during outages, allowing enough time for safe shutdown or continued operation depending on the load.

Overall, the KSTAR UDC9101S-RT is a reliable and efficient power backup solution for businesses and organizations that require uninterrupted power for critical IT and networking infrastructure.

KSTAR UDC9101S‑RT Specifications

UPS Type: Online Double Conversion UPS
Capacity: 1000VA / 900W
Input Voltage: 200 / 208 / 220 / 230 / 240 VAC
Input Voltage Range: Approximately 110 – 300 VAC
Input Frequency Range: 40 – 70 Hz
Input Power Factor: 0.99
Output Voltage: 200 / 208 / 220 / 230 / 240 VAC
Output Power Factor: Up to 1.0
Output Waveform: Pure sine wave
Phase: Single phase

Battery

Battery Type: Sealed lead-acid batteries
Battery Configuration: 2 × 12V / 9Ah
Recharge Time: About 4 – 8 hours to 90% capacity
Hot-Swap Battery: Supported

Connectivity & Interfaces

Output Sockets: 8 × IEC C13 outlets
Communication Ports: USB, RS232
Network Protection: 2 × RJ45 ports
Emergency Power Off (EPO): Yes
SNMP Monitoring: Optional

Physical Specifications

Form Factor: Rack/Tower convertible (2U rack mount)
Dimensions: 440 × 305 × 86.5 mm
Weight: Approximately 11.3 kg
Color: Black

Environmental

Operating Temperature: 0°C – 40°C
Humidity: 0 – 95% (non-condensing)
Noise Level: < 50 dB

Key Features

Online Double-Conversion Technology
The UPS continuously converts incoming AC power to DC and then back to AC, ensuring zero transfer time during power failures and providing consistent, high-quality power to connected devices.
Rack/Tower Convertible Design (2U)
The unit can be installed in a 19-inch server rack (2U) or used as a tower UPS, making it flexible for server rooms, data centers, or office setups.
Pure Sine Wave Output
It delivers a clean sine wave output, which is essential for sensitive devices such as servers, network switches, storage systems, and telecom equipment.
Multiple Communication Interfaces
The UPS supports USB, RS232, SNMP (optional), and RJ45 ports, enabling remote monitoring, network management, and integration with power management software.
Hot-Swappable Batteries
The internal batteries can be replaced without shutting down connected equipment, reducing downtime and simplifying maintenance.
Advanced Protection Features
Built-in protections include overload protection, short-circuit protection, surge protection, and alarms, ensuring safe operation and preventing equipment damage.
LCD Display and Intelligent Monitoring
A front LCD display provides real-time information about load level, battery status, input/output voltage, and operating conditions.

KSTAR UDC9101S-RT UPS – Applications

The KSTAR UDC9101S-RT is designed to provide reliable backup power and protection for critical electronic equipment in various environments. Its online double-conversion technology ensures stable and uninterrupted power, making it suitable for the following applications:

1. Server Rooms and Data Centers
The UPS protects servers, storage systems, and data center equipment from power outages, voltage fluctuations, and electrical disturbances, ensuring continuous operation and preventing data loss.

2. Network and IT Infrastructure
It provides stable power for networking equipment such as routers, switches, firewalls, and network storage devices, helping maintain uninterrupted connectivity.

3. Telecommunication Systems
The UPS is ideal for telecom equipment including communication servers, VoIP systems, and base station equipment that require consistent and clean power.

4. Security and Surveillance Systems
It supports CCTV systems, DVRs, NVRs, and security monitoring equipment, ensuring security operations continue even during power failures.

5. Office IT Equipment
Suitable for protecting office computers, workstations, printers, and other essential electronic devices that require reliable power backup.

6. Industrial Control Systems
The UPS can be used to protect automation systems, control panels, and monitoring equipment in industrial environments where power reliability is critical.

Why Choose the KSTAR UDC9101S-RT UPS

1. True Online Double-Conversion Protection
This UPS uses online double-conversion technology, which continuously converts AC power to DC and back to AC. This ensures zero transfer time during power failures and provides stable, clean power for sensitive equipment.

2. Pure Sine Wave Output for Sensitive Devices
The UPS delivers a pure sine wave output, making it safe for servers, networking devices, storage systems, and telecom equipment that require high-quality power.

3. Flexible Rack or Tower Installation
With a rack/tower convertible 2U design, the unit can be installed in a 19-inch server rack or used as a standalone tower, making it suitable for server rooms and IT cabinets.

4. Wide Input Voltage Range
It supports a wide input voltage range (about 110–300VAC), allowing the UPS to operate efficiently even in areas with unstable power supply.

5. Advanced Monitoring and Communication
The UPS includes USB, RS232, RJ45, and optional SNMP communication ports, enabling remote monitoring, management, and integration with network management systems.

6. Smart Battery Management
Its intelligent charging system optimizes battery performance and extends battery life, while internal batteries provide reliable backup power during outages.

7. Comprehensive Protection for Equipment
The UPS protects connected devices from overload, short circuits, voltage spikes, and power interruptions, ensuring maximum equipment safety.

8. Energy-Efficient Operation
An ECO mode helps reduce power consumption and operating costs while maintaining reliable backup protection.

9. Generator Compatibility
The UPS can work with generators, making it ideal for environments where backup generators are used alongside UPS systems.