SHR3E Mini Intelligent Soft Starter from China Suppliers & Factory for Reliable Motor Control and Protection

Product Profile

The SHR3E soft starter is a brand-new integrated intelligent motor control and protection product launched by Shuoshi Electric. Combining rich experience in industry applications and a deep understanding of customers' special application requirements, and based on years of product research and development, it has added new functions, improving the reliability and convenience of customer applications.

The soft starter is a digital motor soft starting product. It can control the motor to accelerate smoothly during the starting process and decelerate smoothly during the stopping process, and it provides protection functions for both the motor and the product itself. It is the best upgraded alternative to traditional star-delta and reactor starters. It is suitable for asynchronous squirrel-cage motors with a power range of 0.75-90kW.

The soft starter is equipped with an RS485 communication interface and supports the Modbus protocol, enabling comprehensive remote control and monitoring by a microcomputer. It can be widely used in industries such as textiles, metallurgy, agriculture, petroleum, chemical, water treatment, shipping, transportation, pharmaceuticals, food processing, mining, and mechanical equipment.

Function

The SHR3E series soft starters can directly set the parameters of starting time, stopping time and initial voltage through three potentiometers. All models in the SHR3E series soft starters have built-in bypass relays. Users do not need to additionally install external bypass contactors. The soft start adopts the voltage ramp starting method.

During the soft stop process, the output torque can be maintained (final torque control), thus effectively preventing the water hammer effect. It can adopt two connection methods, delta external connection and star external connection. Real-time data (phase A current, phase B current, phase C current, average current, etc.) can be read through communication.*Note. Fault history records (10 fault history records, etc.) can be read through communication. *Note. Statistical data (cumulative number of starts, cumulative running time, cumulative number of trips, etc.) can be read through communication.*Note

There is one start/stop control input point.
RS-485 communication bus interface.*Note
It is optional to have a built-in start/stop control switch.*Note
There are two relay outputs (running relay and fault relay).

*Note 1: It is an optional accessory. This function can only be used when the RS-485 communication bus interface (Modbus RTU protocol) is selected.

*Note 2: It is an optional accessory. This function can only be used when the built-in start/stop control switch is selected.

Features

• Three-phase control
• Operating voltage: 200/400/500VAC
• Wide range of control voltage: 100~240VAC 50/60Hz or 24VDC
• SLR rated operating current: 1.5~150A
• The control board is added with a protective coating
• Direct parameter setting via potentiometers makes the setting and operation simpler and more convenient
• All series have built-in bypass, which reduces energy consumption and is easy to install
• Modbus RTU is optional for monitoring
• Supports all mainstream communication protocols
• Built-in motor protection function
• Integrated structure design with a protection level of IP21: effectively resists dust, moisture and corrosive gases

Feature Description

Note:
1. Rated voltage of the main power supply: 22:220V; 40:400V; 50: 500V;
2. Rated current: 1.5~150A;
3. Control power supply voltage: A: 100~240VAC; B: 24VDC;
4. Control mode of the soft starter: 3P3: Three-phase three-control; 1P1: Single-phase single-control.

Internal control form of the soft starter

Application internal & External connection

Product Selection

Note:
1. 1T5 means 1.5A, 4T5 means 4.5A, 7T5 means 7.5A in Rated current.
2. Other voltage classes can be made to order.

Application Diagram

Parameters

Rapid fuse

Product Structure Size

Schematic Diagram