ABB OTDC250UFV11-ESS Industrial DC Drive Module

ABB OTDC250UFV11-ESS is a two-pole, 250 A DC switch-disconnect rated for up to 1500 V DC, designed as a non-fused isolation device for energy storage systems. This panel-mount unit is UL 98B listed, suitable for isolating the DC side of ESS power conversion equipment, the battery section, or the battery rack. It is part of ABB's OTDC program of DC disconnects and is listed under alternate catalog number 1SCA158166R1001, aligning with ABB's range that covers 100–250 A at 1500 V DC for ESS applications. Typical use cases include isolating the DC bus in battery energy storage systems and providing DC-side protection for PCS assemblies, where maintenance or safety require disconnection in modular ESS enclosures.