Asea Brown Boveri OTDC100U11 Disconnect Switch

The ABB OTDC100U11 is a front-operated, two-pole DC disconnect switch rated for 100 A at up to 1,000 V DC, purpose-built as a PV disconnect for isolating solar arrays, inverters, and related DC circuits. It is base-mountable and ships with a terminal bolt kit included; the handle and shaft must be ordered separately, and the unit weighs about 1.2 kg. Electrical ratings include UL 1000 VDC at 100 A (UL98B) and IEC 1000 VDC at 160 A, reflecting dual UL/IEC applicability for PV installations. This model is part of ABB's OTDC family of DC disconnects, designed to combine a compact footprint with a front-operation mechanism to simplify installation and servicing in space-constrained environments.