Technical Specifications
- Product Model: CZ28-2400Q
- Brand: TIANSHUI (Xixing Electric CZ28 Series DC Contactor)
- Warranty: One Year
- Main Circuit Rated Voltage: Up to DC 1000V
- Control Coil Voltage: Optional DC 110V / DC 220V
- Operating Temperature: -25°C ~ +55°C
- Storage Temperature: -40°C ~ +70°C
- Response Time: ≤ 35ms contact make-and-break action
- Protection Class: IP20, indoor fixed cabinet installation
- Accuracy Class: N/A
- Output Frequency: N/A
- Rated Current Range: 2400A continuous thermal current
- Communication Interface: Auxiliary contact terminals for status feedback
- Supported Protocols: N/A
- Overload Capacity: High short-circuit withstand capability, anti-welding silver alloy contacts, labyrinth arc extinguishing protection
- Dimensions (W×H×D): Large frame heavy-duty fixed mounting structure for low voltage DC switchgear
Product Overview
The TIANSHUI CZ28-2400Q is a heavy-duty large-current electromagnetic DC contactor developed for frequent switching of high-power DC circuits. This switching device connects and disconnects DC motors, rectifier equipment and heavy DC power branches, solving problems such as contact ablation and unstable breaking performance under high inrush DC current conditions. Electrical engineers, switchgear manufacturers and maintenance teams using TIANSHUI low-voltage DC electrical components rely on this contactor for reliable power control in DC transmission systems. Equipped with composite arc-extinguishing structure and encapsulated electromagnetic coil, it adapts to heavy-duty frequent operation and serves as core switching equipment for metallurgy, mining, new energy and industrial DC power distribution cabinets. (Word count: 169)
Key Functions
- 2400A High-Current DC Circuit Switching: Designed for heavy DC load make-and-break control. The ceramic labyrinth arc extinguishing chamber effectively suppresses DC electric arcs and prevents contact burnout during disconnection.
- Heavy-Duty Frequent Operation Resistance: Silver alloy main contacts feature excellent conductivity and anti-welding performance. Encapsulated attraction coil improves insulation, vibration resistance and long-term operational stability.
- Auxiliary Contact Status Signal Output: Equipped with configurable NO/NC auxiliary contacts. Switch state signals can be connected to PLC or alarm loops to realise remote monitoring of contactor working status.
- Industrial-Grade Environmental Adaptability: Reinforced mechanical structure resists shock and vibration. Moisture-proof and anti-corrosion design enables stable operation in metallurgical, mining and outdoor industrial DC equipment environments.
Application Scenarios
- Metallurgical DC Drive Control Systems: Installed inside rectifier cabinets to control large DC rolling mill motors. The TIANSHUI contactor withstands frequent startup and braking impact currents in heavy industry production lines.
- Mining Electric Locomotive & Hoist Electric Control Cabinets: Used for main DC power loop switching of underground transportation and lifting equipment, meeting high safety and reliability requirements for mine electrical equipment.
- New Energy Energy Storage & DC Power Distribution Systems: Applied for switching large-capacity battery clusters and DC power supply branches, supporting safe charge-discharge circuit control.
- DC Equipment Retrofit & Spare Replacement: Direct interchangeable spare part for existing CZ28 series contactors. Consistent installation size and electrical parameters reduce modification work during equipment overhaul.
