Symmetra PX



Quick Overview

InfraStruXure 20kW, 208V

APC Symmetra PX,20 kW /20 kVA,Input 208V 3PH /Output 120V, 208V, 208V 3PH, Interface Port DB-9 RS-232, Smart-Slot, Extended runtime model


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  • ISX20K20F



Output Power Capacity
20 kW / 20 kVA
Max Configurable Power
20 kW / 20 kVA
Nominal Output Voltage
120V, 208V, 208V 3PH
Output Voltage Note
Configurable for 208 or 240 nominal output voltage
Output Voltage Distortion
Less than 5%
Output Frequency (sync to mains)
57 - 63 Hz for 60 Hz nominal
Crest Factor
2.5 : 1
Double Conversion Online
Waveform Type
Sine wave
Output Connections
(1) Hard Wire 5-wire (3PH + N + G)  
(1) Screw Terminals  
Built-in Maintenance Bypass, Built-in Static Bypass


Nominal Input Voltage
208V 3PH
Input Frequency
50/60 Hz +/- 3 Hz (auto sensing)
Input Connections
Hard Wire 5-wire (3PH + N + G)  
Input voltage range for main operations
177 - 240V

Batteries & Runtime

Battery Type
Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof
Included Battery Modules
Available Battery Module Slots
Typical recharge time
2 hour(s)
Replacement Battery
RBC™ Quantity
Extended Run Options
Runtime Graph
Curve Part Number(s)
B ISX20K20F 
+ (1)SYBT4
C ISX20K20F 
+ (2)SYBT4
D ISX20K20F 
+ (1)SYCFXR8-8
E ISX20K20F 
+ (2)SYCFXR8-8
Hover over the line on the graph above to view the runtime at any desired load
Curve fit to measured runtime data. All measurements taken with new, fully charged batteries, at typical environmental conditions, with no electrical input and balanced resistive load (PF = 1.0) output.

Energy Use/Efficiency

Load Efficiency
25% 92.4%
50% 94.3%
75% 94.6%
100% 94.3%
Hover over the line on the graph above to view the efficiency at any desired load
Curve fit of data measured in accordance with the ENERGY STAR Program Requirements Product Specification for Uninterruptible Power Supplies (UPSs) - Eligibility Criteria Version 1.0. All measurements taken in normal mode(s), at typical environmental conditions, with 208V/60Hz electrical input and balanced resistive load (PF = 1.0) output.

Communications & Management

Interface Port(s)
DB-9 RS-232, Smart-Slot
Available SmartSlot™ Interface Quantity
Pre-Installed SmartSlot™ Cards
Control panel
Multi-function LCD status and control console
Audible Alarm
Alarm when on battery : distinctive low battery alarm : configurable delays
Emergency Power Off (EPO)


Maximum Height
81.50 inches (2070 mm)
Maximum Width
24.00 inches (610 mm)
Maximum Depth
35.50 inches (902 mm)
Net Weight
1803.00 lbs. (819.55 kg)
Shipping Weight
1853.00 lbs. (842.27 kg)
Shipping Height
91.00 inches (2311 mm)
Shipping Width
29.50 inches (749 mm)
Shipping Depth
41.50 inches (1054 mm)


Operating Environment
32 - 104 °F (0 - 40 °C)
Operating Relative Humidity
0 - 95%
Operating Elevation
0-10000 feet (0-3000 meters)
Storage Temperature
5 - 104 °F (-15 - 40 °C)
Storage Relative Humidity
0 - 95%
Storage Elevation
0-50000 feet (0-15000 meters)
Audible noise at 1 meter from surface of unit
58.00 dBA
Online Thermal Dissipation
5942.00 BTU/hr
Protection Class


Regulatory Approvals
CE Mark, CSA C22.2 No.107.3-05, ENERGY STAR (USA), FCC Part 15 Class A, IEC 61000-3-2, IEC 61000-3-3, UL 1778
Standard Warranty
1 year on-site repair or replace with factory authorized Start-Up

Sustainable Offer Status