ABB EHDB650C-1L Drive Contactor

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• • • • • • • • • • • • • • • • Product Information & Specifications

                                • Model: EHDB650C‑1L

                                • Series: EHDB Drive Contactor series

                                • Number of Poles: 3‑pole (3P) main contacts, with auxiliary contacts (standard 1 N.O. + 1 N.C.)

                                • Rated Current: Approximately 650 A continuous thermal current

                                • DC Make/Break Capability: Suitable for DC motor control, e.g., 400 HP @ 500–600 VDC

                                • Coil Voltage: 120 V AC (indicated by C‑1L suffix)

                                • Contact Design: Double‑break main contacts with magnetic arc chutes for enhanced arc extinguishing

                                • Auxiliary Contacts: Expandable for monitoring and control system integration

                                • Operating Temperature Range: -40°C to +70°C

                                • Mounting: Screw terminals, suitable for panel or DIN rail installation

                                • Application: Designed for DC adjustable speed drives and high-power load switching

                                Advantages & Features

                                • High Power Capacity: Handles large currents and high-power loads, suitable for DC or reversible drive systems

                                • Drive-System Optimized Design: Specifically for DC adjustable speed drives, also compatible with AC control needs

                                • Excellent Arc-Extinguishing Performance: Double-break contacts with magnetic arc chutes reduce arc wear and prolong service life

                                • Expandable Auxiliary Contacts: Facilitates monitoring and control logic integration

                                • Brand and System Compatibility: Industrial-grade ABB product with mature stability and strong spare parts support

                                • Wide Environmental Adaptability: Suitable for demanding industrial conditions with broad operating temperature range

                                Application Areas

                                • Adjustable speed drives: DC drives, AC variable frequency drives, high-inertia load equipment

                                • Large motor control panels: Mining equipment, steel plants, chemical plants, large pump stations, heavy conveyors

                                • Automation equipment and robotics: Main contactor switching, disconnection, and load protection in control centers

                                • Braking / regeneration systems: Dynamic braking, energy feedback, or high-current switching applications

                                • System upgrades or spare replacements: Replacement for older EHDB series contactors

                                Precautions

                                 

                                • Verify model, coil voltage, number of poles, and auxiliary contact configuration for compatibility

                                • Disconnect power and apply anti-static and grounding precautions before installation or replacement

                                • Ensure terminals, conductor cross-section, and cooling are adequate for high-power operation

                                • For DC switching or regenerative systems, verify make/break capacity matches system voltage

                                • Environmental conditions affect lifespan; ensure proper temperature, humidity, dust, corrosion, and vibration control

                                • For used or refurbished units, check contact wear, coil condition, operation hours, and maintenance records

                                • During system upgrades or modifications, evaluate whether to continue using this series or adopt a newer model