The SANUPS A11J-S2 was designed to provide up to 20kVA of parallel redundant backup electrical power. The system is capable of handling sizeable incoming electrical power fluctuations protecting connected mission-critical equipment. The SANUPS A11J-S2 is a robust, modular UPS system offering the ability to service and or replace system components such as batteries, inverter, and transformers while continuing to supply electrical power to target equipment. This feature allows for a high-reliability system and the continuance of equipment operations with no disruption.


Electrical power issues like spikes, voltage sags, harmonic distortion, electrical noise, rolling brownouts and ultimately total power loss can wreak havoc on sensitive electrical equipment.   These electrical power issues can prematurely age, cause calibration issues, damage and in some cases destroy equipment such as lasers, variable speed drive controls, programmable logic controllers, robotics and power supplies.  These electrical issues can cost thousands to millions of dollars through the loss of productivity, production inventory/data and in the repair and or replacement of production equipment.

To handle these electrical power issues the SANUPS A11J-S2 was designed utilizing a Double Conversion On-Line UPS topology.   When configured in an N+1 redundant array, the SANUPS A11J-S2 adds an additional layer of reliability.  If a UPS within the configuration fails, the unit can be serviced and or replaced all the while continuing to supply the same amount of clean, stable electrical power to target equipment, providing the highest 7/24 capable.


Double Conversion Online

The A11J-S2 uses the Double Conversion Online topology protects critical equipment by isolating them from the raw incoming utility power.  Incoming electrical power is stabilized and filtered the resulting output is a pure sine wave in both voltage and frequency.  This conversion process provides clean, conditioned, and stable electrical power to target equipment.


Providing 7/24 up time for the UPS system, the A11J-S2 can be configured into a redundant array of UPS systems.  In the event one of the UPS systems fails, the others within the group continue to provide the same amount of conditioned power, allowing for the defective unit to be repaired or replaced.


The A11J-S2 utilizes a modular UPS design.  An integrated maintenance bypass switch, allows for electrical power to continue to supply electrical power to target equipment while batteries, inverter, and transformer are serviced or replaced.

Wide Input Range

This unique feature of Sanyo Denki UPS products stabilizes incoming power sags and spikes.  By addressing wide-ranging power input, prevents the UPS from switching to reserve battery power.  This benefit keeps backup batteries at full charge as well as reducing stress on target equipment and the UPS itself.

Auto Health CheckAuto Health Check

The A11J-S2 systematically checks the UPS through the integrated CPU controller.  The system checks status on battery charge, discharge and voltage states as well as internal UPS temperatures.  If anomalies are detected the UPS provides an alert alarm for system maintenance to the end user.

Power Correction Power Correction

Power Factor Correction eliminates distortion and harmonic currents that are harmful to sensitive electrical equipment.   Eliminating this distortion removes the potential for equipment performance issues, increases overall target equipment reliability, and reduces system power consumption.

Reduced EMIReduced EMI

Sanyo Denki develops internal circuity with reduced EMI emissions in mind.  Architectures are tested and validated in an acoustic anechoic chamber.  These extra steps ensure the lowest electrical noise possible.  This efficient design also reduces electrical interference problems to surrounding sensitive equipment.

Thermal ManagementThermal Management

An integrated thermal management system monitors the internal temperature of the A11J-S2.  The system will adjust cooling fan speed rotation depending on thermal requirements.  When not required, cooling fans throttle down, lowering system noise, increasing fan life and lowering power consumption.

Coating ProtectionCoating Protection

Within the A11J-S2 UPS, a protective chemical coating is applied to protect electronic circuit boards from harsh environments that may contain moisture and or chemical contaminants. The coating is electrically insulated and provides a barrier to contaminants such as dust, insects, and salt-spray.


SANUPS SOFTWARE is a Web-based automated 7/24 shutdown assistant. When installed on shutdown target computers, your mission-critical equipment can be safely powered down in the event of an extended power loss.  The software ensures system up-time, data integrity, and the ability to maintain business continuity. The application shutdown function even shuts down Microsoft office applications as well. Systems administrators will receive remote email notification during power events.

(Optional) heat and humidity sensors can provide enhanced environmental monitoring of the UPS systems, equipment racks as well as installed locations.


Within the A11J-S2, a protective chemical coating protects electronic circuit boards from harsh environments such as moisture or dirt and dust.  Additionally, an epoxy adhesive bonds discrete board level components securely to their circuit board.  These enhancements help to make the A11J-S2 perfect for light industrial environments.


For over 90 years Sanyo Denki has been developing power protection products.  The A11J-S2 utilize all premium internal components such as capacitors, transformers, and reactors.  Assembly of these components follows rigorous ISO9001 quality control standards.  The result is superior durability and the ability to offer a long-life production platform, all within a small form-factor footprint.


Cabinet Type

20kVA Parrallel Redundant UPS, 20kVA Redundant UPS
CapacityProduct NamePart NumberInputOutputInput Connection
5kVAA11J Parallel Online UPS 5000VAA11J502SA002U200V200VI/O Terminal block
10kVAA11J Parallel Online UPS 10000VAA11J103SA002U200V200VI/O Terminal block
15kVAA11J Parallel Online UPS 15000VAA11J153SA002U200V200VI/O Terminal block
20kVAA11J Parallel Online UPS 20000VAA11J203SA002U200V200VI/O Terminal block