OTDC400E11 ABB 400 A 2-Pole 1000 V DC Switch Disconnector

Why Choose the ABB OTDC400E11 400 A 2-Pole 1000 V DC Switch Disconnector?

The ABB OTDC400E11, order code 1SCA130983R1001, is a high-performance 400 A 2-pole DC switch disconnector designed for dependable switching and isolation in high-current direct-current electrical systems. Part of the established ABB OTDC switch-disconnector range, it is rated for DC-21B operation at 1000 V DC and is suitable for photovoltaic, renewable-energy and industrial DC applications.

The OTDC400E11 uses a single-circuit configuration with one positive and one negative path, providing simultaneous isolation of both sides of the DC circuit. It is front operated with the operating mechanism positioned between the poles, creating a practical arrangement for integration into electrical cabinets, inverter systems and DC distribution equipment.

With a rated operational current of 400 A at 1000 V DC for DC-21B duty, the OTDC400E11 provides substantial switching capability in a compact industrial format. Handles and operating shafts are not included, allowing the appropriate ABB external or direct-mount operating accessories to be selected according to the enclosure and installation requirements.

Key Advantages

• Heavy-duty 400 A DC switch disconnector for high-current installations.
• Rated for DC-21B operation at 1000 V DC.
• 2-pole configuration providing one positive and one negative switching path.
• Single-circuit arrangement enables simultaneous DC circuit isolation.
• Front-operated design with the mechanism positioned between the poles.
• Purpose-designed ABB OTDC technology for direct-current switching applications.
• Suitable for photovoltaic, renewable-energy and industrial DC power systems.
• Separate handle and shaft selection provides flexibility for different enclosure depths and operating arrangements.

Key Features

• ABB OTDC DC switch-disconnector series.
• 400 A rated operational current.
• 1000 V DC DC-21B switching duty.
• 2-pole switching configuration.
• One positive and one negative switching path.
• Single DC switching circuit.
• Front operated.
• Operating mechanism positioned between the poles.
• Designed for high-current DC switching and isolation.
• Recommended OXP12x185 operating shaft for external operation.
• Recommended OHB95J12 operating handle for external operation.
• Compatible with the OTDV400EK direct-mount handle.
• Recommended M10 × 30 terminal bolt kit.
• Handle and shaft are not included as standard.
• Approximate unit weight of 4.3 kg.

DC-21B Switching for 1000 V DC Power Systems

The DC-21B utilisation category applies to switching resistive DC loads, including moderate overload conditions. In the OTDC400E11, ABB combines a 400 A operational current with a 1000 V DC rating, providing a purpose-designed solution for isolating substantial direct-current circuits where conventional AC switching equipment is unsuitable.

The OTDC400E11 uses two poles as a single DC circuit, with one positive and one negative path. This arrangement enables both conductors to be disconnected during isolation, while the centrally positioned operating mechanism supports practical integration into switchboards, photovoltaic equipment and industrial DC power assemblies.

Typical Applications

• 1000 V DC photovoltaic power systems.
• Solar inverter and power-conversion equipment.
• PV combiner and DC distribution assemblies.
• Industrial high-current DC power systems.
• Renewable-energy installations.
• DC control and distribution cabinets.
• Energy conversion and power electronics equipment.
• OEM equipment requiring positive and negative DC circuit isolation.