OTDC600UF11 ABB 600 A 2-Pole 1000 V DC Switch Disconnector

Why Choose the ABB OTDC600UF11 600 A 2-Pole 1000 V DC Switch Disconnector?

The ABB OTDC600UF11, order code 1SCA158233R1001, is a high-performance 600 A 2-pole DC switch disconnector designed for reliable switching and isolation in demanding 1000 V DC power systems. Part of the ABB OTDC range, this UL-rated switch is particularly suited to utility-scale photovoltaic installations, power-conversion equipment and other high-current DC applications.

The OTDC600UF11 uses an optimised 2-pole, single-circuit architecture that allows one photovoltaic or DC circuit to be disconnected using a compact switching device. It is front operated with the operating mechanism positioned between the poles and is designed for base mounting, providing straightforward integration into combiner boxes, inverters and industrial DC distribution equipment.

Rated at 600 A at 1000 V DC under UL 98B, the OTDC600UF11 combines high-current capability with a compact footprint. It also carries IEC ratings up to 630 A DC-21B at 1000 V DC, a 1500 V insulation voltage and 12 kV impulse withstand voltage, providing robust electrical performance for demanding DC installations.

Key Advantages

• High-performance 600 A UL-rated DC switch disconnector.
• Designed for operation at 1000 V DC.
• 2-pole configuration for disconnecting a single DC or photovoltaic circuit.
• Approved to UL 98B for photovoltaic disconnect applications.
• IEC DC-21B operational current rating of 630 A at 1000 V DC.
• Compact design helps reduce combiner-box and inverter enclosure requirements.
• 10 kA short-circuit making capacity for robust DC switching performance.
• Purpose-designed for utility-scale photovoltaic and high-current DC power systems.

Key Features

• ABB OTDC DC switch-disconnector series.
• 600 A rated operational current under UL 98B.
• 1000 V DC rated operational voltage.
• 2-pole switching configuration.
• Single DC switching circuit.
• Connection configuration: 2a / 2b.
• Front operated with mechanism between the poles.
• 630 A conventional free-air thermal current at 40 °C.
• 630 A DC-21B rating at 1000 V DC.
• 400 A DC-22B rating at 1000 V DC.
• 500 A DC-PV1 and DC-PV2 ratings at 1000 V DC.
• 1500 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 10 kA rated short-circuit making capacity at 1000 V DC.
• Base-mounted construction with lug terminals.
• Handle and shaft not included.
• Approved according to UL 98B and IEC 60947-1/-3.

UL-Rated DC Isolation for Utility-Scale Photovoltaic Systems

The ABB OTDC600UF11 is specifically engineered for high-current photovoltaic applications where dependable DC isolation is essential. Its UL 98B rating of 600 A at 1000 V DC makes it suitable for North American photovoltaic equipment, while its IEC ratings allow the same compact platform to support a broad range of international DC power applications.

ABB's optimised two-pole architecture enables the OTDC600UF11 to disconnect a single photovoltaic circuit while minimising installation space and electrical losses. With a width of just 150 mm and a height of approximately 122 mm, the design helps manufacturers create more compact combiner boxes, inverter assemblies and DC distribution equipment without compromising high-current switching capability.

Typical Applications

• 1000 V DC utility-scale photovoltaic power plants.
• Solar inverter systems.
• PV combiner and recombiner boxes.
• Photovoltaic DC disconnect equipment.
• Renewable-energy power conversion systems.
• High-current industrial DC distribution.
• DC power and control cabinets.
• OEM equipment requiring UL 98B DC isolation.