SRK Series Soft Starter for Motor with Three-Phase Protection

Product advantages and features

• Six Built‑In Start Modes
  Adapt to different load types – constant torque, fan, pump, etc.

• LED Large Display Screen
  Real‑time parameter reading, more intuitive for on‑site adjustment.

• Thickened Three‑Proof Coating
  Moisture‑proof, anti‑static, suitable for harsh industrial environments.

• Built‑In Bypass
  Reduces heat generation after full speed, extends service life.

• RS485 Communication Support
  Easy integration with PLC and upper monitoring system.

• Multiple Motor Protections
  Overload, phase loss, over‑current, voltage unbalance – more reliable operation.

Installation and instructions

• Mount the soft starter vertically on a flat, non‑flammable surface with proper ventilation space.

• Refer to the frame dimension (A/B/C/D) and keep ≥100mm vertical clearance and ≥50mm horizontal clearance between units.

• Connect L1/R, L2/S, L3/T to the incoming three‑phase supply, and T1/U, T2/V, T3/W to the motor terminals.

• Set the motor rated current and start mode via the LED panel before first power‑on.

• After power‑on, test with a no‑load run first, then gradually apply load to verify protection settings.

Note:
Always disconnect power before installation or maintenance. Do not block the built‑in cooling fan. Ensure the ambient temperature stays within the rated range. If two or more units are stacked vertically, strict spacing is required. Contact manufacturer for non‑standard voltage or special application.

SRK Series Soft Starter with LED Display and 485 Communication

The SRK series soft starter from SNTOOM is designed to reduce inrush current and mechanical stress during three-phase motor starting. It works well for conveyors, pumps, fans, and compressors.

A key feature is the Six Built‑In Start Modes, including voltage ramp and current limit, allowing the unit to adapt to different load types. The LED Large Display Screen makes it easy to read real‑time parameters and fault codes on site.

The board uses a Thickened Three‑Proof Coating for moisture and static protection, plus a built‑in cooling fan for stable operation. The RS485 port with Modbus RTU support allows integration into PLC or remote monitoring systems.

Overall, the SRK series delivers flexible starting, clear local display, solid environmental protection, and reliable communication in one unit.