ABB AF750-30-11 High Power Contactor

Feature & Principle

It adopts electronic coil drive design with wide voltage tolerance, stable pull-in even under fluctuating control voltage. The main contacts complete on-off of high-current three-phase load. Auxiliary contacts feed back status signal for interlock and indication. Built-in surge suppression protects the coil, suitable for frequent switching of large motors.

Specifications

Model: AF750-30-11 Brand: ABB Pole: 3P AC-3 rated current: 750 A AC-1 rated current: 1050 A Control coil: 100~250V AC/DC Auxiliary contact: 1NO + 1NC Max working voltage: 1000V Mounting: Screw fixed Certification: CE, UL

Components & Diagnostics

Main contact assembly, electronic coil module, arc extinguishing chamber, auxiliary contact block, terminal bar. Common faults: contact ablation, coil failure, arc chamber damage, poor auxiliary contact conduction, overheating.

Product Brief

AF750-30-11 power contactor, ABB heavy-duty electrical spare widely used for large motor starter, pump, fan and industrial power distribution cabinet maintenance and replacement.