ABB OETL 1000K3 Disconnect Switch (1000A, 690V, 3-Pole)

The ABB OETL 1000K3 is a robust switch disconnector from the OETL series, designed for heavy-duty industrial applications. With a rated current of 1000A and rated operational voltage of 690V AC, this 3-pole device provides safe isolation and load switching in power distribution systems, motor control centers, and main switchboards. It complies with international standards IEC 60947-3 and is suitable for both commercial and industrial installations.

Key Features and Benefits

• High breaking capacity: Capable of making and breaking currents up to its rated value under normal and overload conditions.

• Clear indication of contact position: Visual indicator shows whether contacts are open or closed, ensuring safe isolation.

• Padlockable handle: The operating mechanism accepts multiple padlocks in the OFF position to prevent unauthorized operation.

• Double-break contacts: Each pole features double-break contacts for enhanced performance and reliability.

• Terminal options: Available with front or rear terminals (cable lug or busbar connection) to suit various installation requirements.

Electrical Specifications

• Rated operational voltage: 690V AC (50/60 Hz).

• Rated insulation voltage: 1000V AC.

• Rated impulse withstand voltage: 8 kV.

• Rated current (I_th): 1000A at 40°C ambient.

• Rated short-time withstand current (I_cw): 15 kA for 1 second.

• Rated short-circuit making capacity: 30 kA peak.

• Utilization categories: AC-21A, AC-22A, AC-23A for switching resistive, mixed, and motor loads.

Mechanical Design

The OETL 1000K3 features a compact, modular enclosure made of self-extinguishing thermoplastic, providing high resistance to tracking and impact. The switching mechanism is quick-make, quick-break, independent of operator speed. Terminals are equipped with IP20 finger protection. The switch can be mounted in any orientation and is suitable for use in harsh environments with an operating temperature range of -25°C to +55°C.

Applications

• Main disconnect for industrial machinery and control panels.

• Isolator for motor circuits and motor control centers (MCC).

• Switch disconnector for power distribution boards.

• Isolation point for renewable energy systems (solar, wind).

• Infeed disconnector for UPS systems and data centers.

Standards and Approvals

• IEC 60947-1, IEC 60947-3.

• UL 508 (pending).

• CCC, CE, and EAC certified.

With its high performance, safety features, and robust construction, the ABB OETL 1000K3 disconnect switch is an ideal choice for ensuring reliable isolation and switching in demanding electrical systems.