4160V 400Hz 160A Vacuum Contactor

Main Features

The product is a AC vacuum contactor, an automated control device with the following key features:

Vacuum Arc-Extinguishing Technology: Utilizes a vacuum interrupter as the arc-extinguishing medium, featuring an intact and securely fixed arc chute, ensuring reliable arc extinction in high-voltage environments without emitting hot particles, thereby enhancing safety.

Permanent Magnet Holding Mechanism: The control circuit employs a permanent magnet holding system with a closing/opening power of ≤600W, offering energy efficiency and suitability for frequent operations.

High Reliability and Longevity: Mechanical life ≥300,000 cycles, electrical life ≥250,000 cycles (AC-3) / 100,000 cycles (AC-4), and a service life ≥20 years. Incoming material defect rate ≤500ppm, field failure rate ≤500ppm, and annual failure rate ≤200ppm.

Adaptability to Harsh Environments: Suitable for rail transit locomotive vehicles, resistant to vibration and shock (1-16Hz, 1mm; 16-100Hz, 10m/s²), tilt and sway (longitudinal ±20°/±30° short-term, lateral ±15°; longitudinal sway ±25°, lateral sway ±30°), salt fog (2mg/m³), oil mist (50mg/m³), mold (e.g., Aspergillus niger, Aspergillus flavus), with an operating temperature range of -35°C to 55°C, relative humidity up to 90% (with condensation), and atmospheric pressure 0.8-1.3 times standard.

Environmental and Safety Compliance: Meets RoHS standards, free from hazardous substances; certified with CE, with an IP protection rating and high-voltage hazard warning labels.

Compact Design: With dimensions compliant with mechanical interface requirements, designed for installation in electrical cabinets. Copper bars are treated with anti-corrosion plating, metal components are acid- and alkali-resistant, and insulating parts are made of epoxy or fiberglass.

Electromagnetic Compatibility (EMC): Complies with relevant standards, suitable for high-voltage AC environments.

Applications

This contactor is primarily used for frequent making or breaking of AC and DC circuit power supplies, enabling remote isolation operations. When paired with relays, it supports timed operations, interlocking control, and various quantitative controls. It is widely applied in automated control systems, with primary control targets including:

Electric motors (motor starters).

Other electrical loads such as heaters, lighting, welding machines, and capacitor banks.

Particularly suited for rail transit locomotive vehicle electrical equipment, used in high-voltage transmission and distribution, overhead lines, power plants, and substations.