ABB EH700C-1 Magnetic Contactor

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

                            • Model: EH700C‑1

                            • Series: EH series large 3‑pole AC contactor

                            • Rated Capacity: Example data shows 602 A, 600 V; 200 HP at 200 V; 250 HP at 230 V; 500 HP at 460/480 V; 600 HP at 575/600 V.

                            • Poles/Phase: 3‑pole, three‑phase (3P, 3PH)

                            • Coil Voltage: Example 110 V 50 Hz / 120 V 60 Hz AC (depending on version)

                            • Auxiliary Contacts: E.g., 1 Normally Open (N.O.) + 1 Normally Closed (N.C.) side‑mounted auxiliary contacts (varies by version)

                            • Standards & Use: Across‑the‑line motor control and power switching; suitable for high voltage up to ~600 VAC circuits.

                            • Installation & Structure: Designed for heavy‑duty industrial loads, supporting high current power switching.

                            Advantages & Features

                            • High Power Capacity: Supports very large current and high power motors and loads (e.g., up to 600 HP level), ideal for heavy industrial applications.

                            • Three‑Pole Three‑Phase Design: Suited for standard three‑phase motor control and large systems, providing robust switching.

                            • Standard Industrial Product: As part of ABB’s EH series, offers mature specification, high reliability, ease of engineering design and maintenance.

                            • Wide Application Range: Applicable not only for motor start/stop control but also for power switching in large load systems, distribution setups, etc.

                            • Brand Assurance: ABB is globally recognized in electrical equipment; its products are trusted in industrial environments and supported for service and replacement.

                            Application Areas

                            • Large industrial motor control such as in steel plants, chemical plants, mining, paper mills — main drive motor control cabinets.

                            • Factory automation with heavy‑duty load switching: e.g., main fans, compressors, large pump stations.

                            • Power distribution systems as master contactor or switching device controlling heavy loads.

                            • Heavy machinery, elevator drives, gantry cranes, large conveyors where high power control is needed.

                            • Spare or replacement parts in older large control systems for maintenance or lifespan extension.

                            Precautions

                             

                            • When purchasing or replacing, ensure full model (EH700C‑1) and corresponding rated current/voltage/coil voltage to ensure compatibility.

                            • Prior to installation, disconnect power, use ESD protection, ensure proper grounding, adequate spacing and ventilation for mounting.

                            • Ensure environmental conditions are suitable: avoid extreme temperature, high humidity, excessive vibration or corrosive atmospheres to maintain lifespan and reliability.

                            • If used for motor start/stop applications, ensure appropriate thermal overload protection, short‑circuit protection, correct wiring gauge and coordination.

                            • Given the high power nature, the terminal connections, conductor cross‑section, auxiliary devices (aux contacts, mechanical interlocks, delay modules) should all be properly selected.

                            • For aged or second‑hand units, inspect auxiliary contact wear, main contact condition, coil operation reliability, check for signs of burning or deformation.

                            • When upgrading or replacing systems, evaluate whether moving to more modern or efficient switching technology is beneficial for overall system reliability and efficiency.