Technical Specifications Rated Motor Current: 135 A Applicable Motor Power: 75‑90 kW at 400V three‑phase Main Circuit Rated Voltage: 208‑600 VAC Control Supply Voltage: 110‑240 VAC Starting Current Limit Range: 200%‑500% of motor rated current Soft‑start Ramp‑up Time: 1‑30 seconds adjustable Soft‑stop Ramp‑down Time: 0‑30 seconds adjustable Built‑in Protection: Over‑current, phase loss, over‑temperature protection Operating Temperature: ‑10 ℃ to +50 ℃ Storage Temperature: ‑40 ℃ to +85 ℃ Relative Humidity: 5%‑95%, non‑condensing Mounting: Cabinet wall‑mount installation Certifications: CE, UL
Functional Features Realizes current‑limited soft start for three‑phase AC induction motor to reduce grid impact. Configurable soft‑stop function avoids water‑hammer effect for pump equipment. Built‑in comprehensive hardware protection against phase loss, over‑current and internal over‑temperature. Provides relay output contacts for fault alarm and running status feedback. Supports external start‑stop control signal input. Equipped with front‑panel status LED indicators for running and fault information. Allows parameter setting for starting curve and protection threshold.
Application Scenarios Large‑size water pump and sewage pump motor starting control. Industrial large‑capacity fan and blower drive control. Belt conveyor and material handling equipment motor start‑stop. HVAC large air‑handling unit motor control cabinets. General industry motor starting occasions requiring reduction of mechanical shock.
Usage Notes Do not operate without matching motor load. Keep cabinet internal dust accumulation controlled to avoid heat‑dissipation channel blockage. Regularly inspect front‑panel LED indicator status and check fault history records. All working parameters must be set according to actual motor nameplate data. Do not block device ventilation openings. Check power terminal tightening condition during periodic equipment maintenance. Follow lock‑out tag‑out safety rules during commissioning and maintenance operations.
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