External battery pack provides extended backup runtime for select Tripp Lite 10-50K S3M-Series 3-phase UPS systems.±120VDC Battery Cabinet Gives Your Compatible 3-Phase UPS Extended RuntimeThis external battery pack connects to a compatible SmartOnline® S3M-Series 3-phase UPS system to provide long-lasting battery backup for data centers, telecommunications, networks, industrial facilities, security, emergency systems and other mission-critical applications that require high capacity, high availability and extended runtime. In addition to battery backup and extended runtime, the BP240V40L-NIB can also be daisy-chained to other external battery cabinets for even longer extended-run operation.Rugged Steel Construction Designed to Last in Demanding IT ApplicationsThe cabinet is made from heavy-gauge steel with a baked powder-coated finish that helps prevent chipping and corrosion. The hinged front door provides easy access to the user-installed internal batteries. The door locks securely to help prevent damage, tampering or theft. Fuses and output breaker protect against potentially hazardous overcurrent. Ships Ready for Immediate Battery InstallationPre-installed rolling casters allow easy adjustment at the installation location. Adjustable levelers support secure long-term deployment on a stable surface. All required internal battery cabling is included. External battery cables feed into the cabinet through conduit knockouts built into the bottom panel.Typical Applications- Extend the runtime of your compatible Tripp Lite UPS system to maintain operation during all power conditions- Daisy-chain to additional battery cabinets to provide even longer extended-run operation for backing up essential equipment- Customize your application with the internal batteries of your choiceSystem RequirementsTripp Lite 3-phase 208V UPS models S3M10K-NIB, S3M15K-NIB, S3M20K-NIB, S3M25K, S3M30K, S3M50K or other UPS specifying compatibility.