EHDB280 ABB heavy-duty DC dedicated contactor for elevator traction and industrial inverter dynamic braking systems, full insulation and contact aging test, 12-month global warranty for high-power drive cabinet maintenance replacement

Product Overview

• PN: EHDB280｜Brand: ABB｜Series: Spectrum EHDB DC Contactor Series｜Type: 3-Pole High-Current DC Drive Contactor

• Definition: High-capacity DC dedicated heavy-duty contactor under ABB Spectrum series, specially designed for elevator traction systems, high-power frequency converters, DC motor dynamic braking loops and industrial heavy-load power switching occasions. Rated thermal current 280A, maximum withstand 600VDC, adopts double-break contact + magnetic arc extinguishing structure, can withstand frequent high-current make-and-break, effectively avoid DC arc ablation and contact welding failure, core spare for elevator, port crane, metallurgical DC drive equipment main circuit contact burnout, coil damage maintenance replacement

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Core Features

1. 3-pole main contact design, rated thermal current 280A, maximum breaking voltage 600VDC, built-in magnetic arc chute, excellent DC arc extinguishing capability, suitable for frequent start-stop heavy-duty working conditions such as high-power elevator traction and dynamic braking of frequency converters
2. Standard equipped with 1NO+1NC auxiliary contact, expandable auxiliary contact modules can be installed to realize main contact closing state feedback to PLC/DCS, forming safety interlock and equipment fault monitoring protection logic
3. High-temperature sealed electromagnetic coil, supports 85%~110% rated voltage stable operation, optional AC/DC multiple coil specifications, strong anti-grid voltage fluctuation ability, adapts to complex industrial power supply environment
4. Silver alloy double-break contact material, high wear resistance and anti-welding performance; mechanical service life up to 10 million times, electrical service life up to 1 million times, stable long-term continuous operation for multi-shift production equipment
5. Two installation methods: 35mm DIN rail / screw fixed panel mounting, fully enclosed touch-safe terminal design to prevent accidental electric shock; detachable arc extinguishing cover, convenient for on-site contact wear inspection and maintenance

6. Supports mechanical interlock accessory installation, can form forward and reverse interlock contactor group to prevent main circuit short-circuit risk caused by simultaneous closing of positive and reverse loops

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Technical Specs

• Main Circuit: 3 Pole, Rated Thermal Current 280A
• Rated Withstand Voltage: Max 600VDC, Dynamic Breaking Capacity 300VDC
• Standard Auxiliary Contact: 1 Normally Open + 1 Normally Closed, expandable to 4NO+4NC
• Coil Option: Multiple AC/DC voltage specifications optional
• Mechanical Service Life: 10 million times; Electrical Service Life: 1 million times (rated load)
• Operating Temperature: -25℃ ~ +70℃｜Storage Temperature: -40℃ ~ +85℃, RH5%~95% non-condensing
• Net Weight: 2.7kg｜Dimension: 196×175×132mm
• Installation: DIN rail / panel screw mounting
• Protection Grade: IP20
• HS Code: 85369000
• Certification: UL, CSA, CE certified, elevator special safety certification

• Product Status: Mass-produced industrial heavy-duty DC contactor, new original in stock

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Compatibility

• Typical Matching Equipment: High-rise elevator traction control cabinet, ABB high-power inverter drive system, metallurgical rolling mill DC motor, port container crane, large energy storage DC power cabinet
• Matching Control System: ABB 800xA DCS, AC500 PLC, all brands of elevator main control boards, industrial drive PLC control system

• Incompatible: Low-current small-signal control circuits, household AC light load switching occasions

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Application

1. Elevator traction main power switching, elevator dynamic braking resistance loop safety control, emergency safety circuit power cut-off protection
2. High-power frequency converter, servo drive main circuit switching, dynamic braking loop frequent on-off control
3. Metallurgical DC rolling motor, port crane, forklift heavy-load DC equipment forward/reverse start-stop control

4. Large photovoltaic energy storage cabinet, industrial high-power DC power supply load switching and short-circuit protection

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Our Advantage

• Full contact on-off endurance test, coil voltage stability test and high-voltage insulation withstand test before delivery
• 12-month global warranty for all genuine original products
• DHL/Fedex worldwide door-to-door delivery, FOB Xiamen available
• Free technical support for coil voltage selection, auxiliary contact wiring, main circuit parameter matching and contactor burnout fault troubleshooting