Product Type | Uninterruptible Power Supply (UPS) |
Model | E3SUPS20KFBS |
UPS Topology | Online Double Conversion |
Form Factor | Tower |
Rated Power (W) | 20000 W |
Rated Power (VA) | 20000 VA |
Waveform Type | Sine wave |
Input Voltage | 208 V |
Output Voltage | 208 V |
Input Frequency | 40 - 70 Hz |
Output Frequency | 50/60 Hz auto-sensing |
Battery Type | Internal battery (sold separately) |
Number of Phases | 3-phase |
Efficiency at Full Load | Up to 96% |
Bypass Type | Internal static bypass |
Nominal Output Current | 66.5 A |
Nominal Input Current | 62.2 A |
APC EASY UPS 3S 20kVA 208V 3:3 for Internal Batteries, E3SUPS20KFBS

Key Benefits

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- Delivers 20 kVA of clean, consistent power through online double-conversion technology, ideal for mission-critical systems.
- TAA compliance and RoHS certification make it suitable for government and enterprise installations.
- Includes factory-authorized 5x8 startup service and a 1-year on-site repair/replacement plan, reducing deployment risk.
Product Overview
The APC EASY UPS 3S 20 kVA 208V 3:3 UPS, model E3SUPS20KFBS, is a high-capacity online power protection solution built for businesses requiring uninterrupted, clean energy. Its 20,000 VA/20 kW output and true online double-conversion architecture ensure reliability for sensitive systems. Measuring 14.96" W x 37.8" D x 55.12" H, this solution features a desktop-style form factor suited for indoor deployments. Engineered for 0–40°C operations and compliant with TAA and RoHS, the unit includes a 1-year on-site service contract with factory-authorized startup. With origin in Canada and internal battery compatibility, it offers a robust foundation for scalable power resilience strategies.
Specifications
Product Overview
Physical & Environmental
Width | 14.96 in (380 mm) |
Depth | 37.8 in (960 mm) |
Height | 55.12 in (1400 mm) |
Weight (without batteries) | 445 lb (202 kg) |
Operating Temperature Range | 0°C to 40°C |
Storage Temperature Range | -25°C to 55°C |
Relative Humidity Range (Operating) | 0 to 95% non-condensing |
Operating Elevation | 0 - 1000 m without derating |
Audible Noise at 1m from Surface | 67 dB |
Cooling Type | Forced air |
Cloud Management & Licensing
Remote Monitoring | APC EcoStruxure Ready via optional Network Management Card |
Software Support | Compatible with PowerChute Network Shutdown |
Included Services | 1-year on-site repair with factory-authorized startup |
Interfaces
Communication Interfaces | 1 x RJ45 10/100 Ethernet, 1 x USB, 1 x RS-232 |
SmartSlot Expansion Slots | 1 |
Signaling Ports | Dry contact I/O |
Compliance & Origin
Country of Origin | Canada |
TAA Compliant | Yes |
RoHS Compliant | Yes |
Certifications | UL 1778, CSA, IEC 62040-1, FCC Part 15 Class A |
Advanced Security Features
Password Protection | Yes |
Event Logging | Yes |
SNMP Monitoring | Supported with optional card |