Page 4 - OTDC-High-Current-Switch

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Disconnectors 1600 to 4000 Amperes

for DC-20 applications

High performance, compact solution

ABB offers disconnectors suitable for diverse DC-20 applications such as energy storage
systems (ESS), large disconnectors for inverters onboard marine vehicles and in photovoltaic
installations.

Innovations like energy storage increase interest and consumers, which combined with more
competition, make them more attractive. For example, marine electric propulsion systems and
commercial marine energy storage solutions are rapidly increasing. In these applications large
amounts of energy are needed, either stored or distributed, and disconnectors are needed to
perform safe maintenance on these systems.

Reliable in extreme conditions
OT disconnectors are suitable for demanding conditions and are
virtually maintenance-free across their entire lifespan
• Up to 1500 Vdc
• Utilization category DC-20B
• High DC-short circuit ratings, despite their compact size
• 1600 A up to 4000 A applications
• Coordination with fuses and circuit breakers

Easy to install
Easy and cost-efficient installation, maintenance, and use, through modular
design and smaller dimensions.
• 2- and 4- pole versions
• 3 different connection types
• Common accessories with other ABB switches

Safety and protection
The disconnectors come equipped with a comprehensive range of inbuilt safety
features. The handles can be padlocked to prevent unwanted operation.