APC SUA3000-BR UPS backup battery compatible replacement. Sigma SG-RBC55 is an AGM sealed lead-acid replacement supplied for the SUA3000-BR. One complete replacement set containing two 24V 18Ah modules is included.
Match the full UPS model and revision, existing cartridge label, connector, wiring and fuse arrangement before ordering. The source lists SUA3000-BR with the RBC55 family. The UPS itself is not included.
Both battery modules are supplied. Each module is rated 24V 18Ah. Keep the original system wiring configuration; the module rating does not by itself define the complete UPS battery bank voltage or capacity.
APC SUA3000-BR replacement specifications
| Listed equipment or cartridge reference | SUA3000-BR |
|---|---|
| Sigma replacement reference | SG-RBC55 |
| Package contents | One complete replacement set containing two 24V 18Ah modules |
| Module voltage | 24V |
| Capacity per module | 18Ah |
| Chemistry | Rechargeable sealed lead-acid (SLA), AGM |
| Internal battery model | SG12180FP |
| Internal battery quantity | 4 batteries total; two series-connected batteries per module |
| Dimensions per module | 7.13 × 6.1 × 7.4 inches |
| Supplier-listed total product weight | 48 lb (approximately 21.77 kg), excluding shipping packaging |
| Connection | Compare connectors, fuse and wiring with the existing assembly |
Installation and compatibility
Compare all connections and dimensions against the installed battery assembly and your UPS documentation. A shared base battery, voltage or cartridge family alone is not a complete fit check. Follow the UPS manufacturer’s replacement procedure and do not assume the battery can be replaced while equipment is powered.
Internal battery documents
The following documents describe the individual SG12180FP batteries used inside the assembly. They do not describe the overall cartridge dimensions or the wiring configuration of your UPS.
Related batteries and ordering help
Browse APC UPS backup batteries. Email Sales@RocketDistributing.com with your SUA3000-BR label, cartridge number, connector photos, quantity and delivery location for matching help or volume pricing.
California Proposition 65 warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. See P65Warnings.ca.gov.
APC is a trademark of Schneider Electric. This is an aftermarket compatible replacement supplied by Sigma Power Systems.