APC SYPM4KI Symmetra LX 4kVA Power Module 220/230/240V

APC is Schneider Electric's brand for uninterruptible power supplies, power distribution units, cooling and racks for IT and control systems. American Power Conversion was founded in 1981 by three engineers from MIT's Lincoln Laboratory and grew into one of the largest UPS makers in the world. Schneider Electric completed its acquisition of APC on 14 February 2007, combined it with MGE UPS Systems, and since 2011 APC has been a product brand of Schneider Electric.
Seven Star LLC lists APC uninterruptible power supplies from desktop Back-UPS units to modular Symmetra systems, together with battery packs and network cards, and sources them for sites in Oman.

APC company profile
Founded1981, USA, as American Power ConversionFoundersThree engineers from MIT Lincoln LaboratoryOwnershipSchneider Electric since 14 February 2007; an APC by Schneider Electric product brand since 2011Product familiesBack-UPS, Easy UPS, Smart-UPS line-interactive, Smart-UPS On-Line SRT and SRV, Galaxy three-phase UPS, rack PDUs, NetShelter racks, network management cards and EcoStruxure IT software

Milestones
1981: American Power Conversion is founded by three MIT Lincoln Laboratory engineers.2006: Schneider Electric announces the acquisition of APC on 30 October.2007: The acquisition is completed on 14 February; APC is combined with MGE UPS Systems.2011: APC becomes a product brand within Schneider Electric.

APC UPS families on this page

APC names its UPS lines by topology and size:

Back-UPS and Back-UPS Pro: line-interactive units for workstations and small loads, such as BX1600MI-MS and BR1600MISmart-UPS: line-interactive models with sine wave output, including SMT750I, SMC1000IC and the Smart-UPS X SMX3000HV with its SMX120BP external battery packSmart-UPS SRT and Smart-UPS RT: online double-conversion units, for example SRT2200XLI, SRT3000XLI, SRT5KRMXLI and SURT8000XLIEasy UPS Online: SRV2KILSymmetra LX and Symmetra PX: modular, scalable systems for larger loads

The AP9641 Network Management Card 3 adds remote monitoring to UPS models with a SmartSlot.

Where APC UPS systems are used

In industrial plants across the GCC, APC UPS units back up DCS and PLC cabinets, operator stations, SCADA servers, telecom racks, fire and gas panels and analyzer shelters. Online double-conversion models are normally chosen for control systems because the load is always fed through the inverter. Line-interactive units suit office IT and less critical loads.

APC products we list
FamilyExamplesUPS and BatteriesAP9641 Network Management Card 3, BR1600MI Back-UPS Pro 1600VA/960W, BX1600MI-MS Back-UPS 1600VA Tower UPS, SMC1000IC Line-Interactive UPS 1000VA 600W, SMC1500I Smart-UPS C 1500VA/900W, SMT750I Smart-UPS 750VA/500W Line-Interactive, SMX120BP Smart-UPS X 120V External Battery, SMX1500RMI2U Smart-UPS X 1500VA Rack/Tower and 9 more

Ordering APC UPS units and parts: what we need

Send the full SKU, for example SRT3000XLI, and not only the VA rating. The letters carry meaning: an I in the suffix marks a 230 V international model, XL an extended-run version that accepts external battery packs, and RM a rack-mount form. For a new requirement, give load in watts, input and output voltage, required runtime, tower or rack format, and the plug or hardwire arrangement. For batteries, send the UPS SKU and serial number so the correct replacement battery cartridge can be found in APC documentation.

Replacement batteries, battery packs and spares
Most APC service work is battery work. APC Replacement Battery Cartridges, sold under RBC and APCRBC numbers, are sets of sealed valve-regulated lead-acid blocks that arrive pre-wired with the connectors for the UPS models they are listed for, so a weak battery can be changed as one unit and, on hot-swap models, without switching the load off. Some newer cartridges carry an -LI suffix for lithium-ion versions. External battery packs extend runtime on XL and SRT models, and are chained to the UPS through the battery connector on the rear panel. To find the right cartridge, send the UPS SKU and serial number; the same UPS can use different cartridges across hardware revisions.
Modular and three-phase APC systems
Symmetra LX and Symmetra RM: single-phase modular UPS frames with hot-swappable power modules, battery modules and intelligence modules, so a failed module can be exchanged while the load stays on protected power.Symmetra PX: three-phase modular UPS for data rooms, built from power modules with N+1 redundancy and battery modules for runtime.Smart-UPS VT: three-phase double-conversion UPS for small data rooms and technical buildings.Silcon: large three-phase UPS based on delta conversion, still running in many plants and data centres; spare part kits are listed in levels (SPL1 to SPL4) so sites can hold the parts that match their service plan.Easy UPS On-Line (SRV): cost-focused double-conversion units, many with external battery pack support.
APC UPS in Oman and GCC conditions
Oman supplies 240 V single-phase and 415 V three-phase at 50 Hz, so international models with an I suffix (230 V nominal, adjustable to 240 V on most Smart-UPS units) are the usual choice. Heat is the main enemy: most APC UPS units are rated for operation up to 40 °C, while summer shade temperatures in Muscat and the interior pass 45 °C, and a lead-acid battery loses roughly half its service life for every 10 °C above 25 °C. Install UPS and batteries in a cooled room, keep filters clean in dusty inland sites, and size the standby generator with margin for UPS input and battery charging current.
All APC UPS systems, batteries and accessories on this site are grouped under UPS and Batteries, and the wider Schneider Electric range can be quoted together with them.

Facts checked against APC by Schneider Electric's published history, October 2026.

Browse APC products by category: UPS and Batteries.
Need a replacement battery for an APC UPS you already run? Use our APC UPS replacement battery finder to match the model to its official RBC cartridge.