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SSR701 Series Motor Soft Starter Modbus RS485 4-20mA Analog Output Over-Current Phase-Loss Protection 7.5-500kw. Built-in bypass contactor, compact all-in-one design, saves cabinet space, no extra bypass contactor required. 4 selectable starting modes (Voltage ramp / Current limit / Jog / Heavy-load), match diverse motor load requirements. Complete multi-protections: over-current, phase-loss & over-heating, effectively safeguard asynchronous motors. Rich interfaces: RS485 Modbus communication + 4-20mA analog output, support remote monitoring. High reliability: main board 72-hour high-temperature aging test, stable performance for long-time industrial operation.