China Low Voltage Soft Starter Manufacturers Suppliers Factory - Customized Service

Your Professional Low Voltage Soft Starter Supplier！

RENLE was founded in 1999 and has remained dedicated to the R&D, production,and sales ofelectrical equipment, committed to providing global customers with efficient,energy-saving, and stable industrial control solution.

Medium Voltage Starter
The RENLE Intelligent Medium Voltage Soft Starter is designed for three-phase
Soft Start Motor Starter 3 Phase
The JJR5000 Series Intelligent soft start motor starter 3 phase adopts
Solar Battery Storage Cabinet
Commercial and industrial outdoor energy storage cabinets are energy storage
Medium Voltage VSD
The RENLE RNHV Series Medium Voltage Variable Frequency Drive is designed in
Solid State Soft Start
The JJR 8000 Series Intelligent Solid State Soft Starter incorporates advanced
High Voltage Drive
Employing cascaded power cell technology, the RNHV 2000 series high voltage
Low Voltage Variable Frequency Drive
The RNB2000 series Low Voltage Variable Frequency Drive (VFD) is known for its
Low Voltage Drive
The RNB1000 series low voltage drive made by RENLE is suitable for three-phase

Why Choose Us

Professional Team

The company insists on people-oriented and technological innovation, and the R&D team accounts for more than 30% of the total number of employees. Invested heavily in the introduction of a complete set of precision instruments and experimental equipment.

Sales Market

Our product Export United States, Vietnam, Japan, Britain, Italy, Russia, India, Brazil, Spain, the Middle East and other countries and regions.

Rich Experience

We has 20+ years of research, 120 Professional sales service, engineers / person and 35 Presence in /countries.

Low Voltage Soft Starter - Overview

A low voltage soft starter is an electronic device that gradually increases voltage to an AC induction motor during startup, reducing the inrush current and torque compared to direct-on-line (DOL) starting. By using silicon-controlled rectifiers (SCRs), it controls the motor's acceleration and deceleration, minimizing mechanical stress on the motor and load, reducing voltage drop in the power supply, and prolonging the motor's life.

Product Specification

We offers the following product specifications：

Protection level	IP00
Vibration resistance	Comply with IEC 68-2-6: 2 Hz to 13Hz is 1.5mm peak value; 13 Hz to 200Hz is 1gn
Impact resistance	Comply with IEC 68-2-27: 15g,11ms
Maximum ambient pollution class	Class 3, comply with IEC 947-4-2
Maximum relative humidity	93% no condensing or drip. Comply with IEC 68-2-3
Ambient temperature	Storage:-25℃ to +70℃ Running : 10℃ to +40℃ without derating. Maximum +60℃,when temperature above 40℃,the current will reduce by 2%for temperature rising per 1℃.
Maximum operation altitude	2000m without capacity reduction ( above 2000m, current will reduce by 0.5% for every 100 meters increase altitude)
Operation position	Vertical position, A range of ± 10°

Advantages Of Low Voltage Soft Starter

Reduced Voltage Dips: During start-up, motors draw high currents that can cause voltage dips, affecting other connected equipment. Soft starters help avoid these dips by controlling the current flow.

Energy Savings: By limiting peak current, soft starters reduce energy usage, especially during start-up, which can contribute to significant cost savings over time.

Lower Maintenance and Downtime: Because soft starters minimize mechanical stress, they help reduce the frequency of maintenance and the risk of unexpected downtime. This can translate into better productivity and efficiency in industrial settings.

Application

Pump
Make use of soft stop function to relieve the influence of water hammer so as to save system maintenance cost.

Ball mill
Make use of voltage ramp startup to reduce gear torque friction so as to save cost and time.

Fan
Reduce belt friction and mechanical conflict to save maintenance cost.

Compressor
Make use of current limitation function to realize smooth startup so as to reduce motor heating and prolong its service life.

Conveyor
Make use of soft start to realize smooth and gradual startup process in order to avoid product move and liquid overflow.

Components Of Soft Starter

Thyristors (Silicon-Controlled Rectifiers – SCRs)
Thyristors are significant components in controlling the motor’s voltage during startup. They act as electronic switches that gradually increase the voltage supplied to the motor, helping to prevent the high inrush current typically associated with motor startups.

Control Circuit
The control circuit regulates the operation of the thyristors. It adjusts the firing angle of the thyristors, controlling how quickly the voltage is ramped up and ensuring smooth motor acceleration. The control circuit also handles fault detection and protection features.

Bypass Contactor
After the motor reaches its full operating speed, the bypass contactor is activated to bypass the thyristors. This allows the motor to operate at full power without interference from the soft starter components, ensuring maximum efficiency.

Overload Protection
Some soft starters include an overload protection mechanism to safeguard the motor from excessive current. This feature prevents the motor from overheating or sustaining damage if the current exceeds a safe threshold during startup.

Thermal Protection
Thermal protection monitors the temperature of both the motor and the soft starter. If the temperature rises beyond a safe limit, it can trigger a shutdown or alarm to prevent overheating and potential damage.

User Interface (HMI – Human-Machine Interface)
Modern soft starters have a user interface that allows operators to configure settings, monitor performance, and troubleshoot problems. This feature makes it easy to adjust parameters such as ramp-up time, maximum voltage, and motor protection settings.

Ramp Control Circuit
The ramp control circuit determines the speed at which the motor accelerates from zero to full speed. It gradually increases the voltage supplied to the motor, reducing mechanical and electrical stress during startup.

Customization Process

Requirement Discussion

Design Proposal

Our professional team will develop a design proposal and provide a quotation based on your requirements.

Sample Production

We produce samples according to the design proposal and conduct rigorous testing.

Mass Production

Upon your approval, we commence mass production to ensure timely delivery and consistent quality.

After-Sales Service

We offer ongoing technical support and service to ensure the long-term stable operation of our products.

Package & Delivery

Package: Standard export package or Custom

Delivery: By air express, by sea

p202507081717564a719.jpg (800×730)

FAQ

Q: What do you mean by energy storage system?

A: Energy storage is the capture of energy produced at one time for use at a later time to reduce imbalances between energy demand and energy production. A device that stores energy is generally called an accumulator or battery.

Q: How long do batteries last in energy storage?

A: The lifespan of a grid-scale battery depends on its chemistry, how long the battery has been used, and how often it's charged and discharged. Applications of lithium-ion batteries in grid-scale energy storage systems last about 10–15 years. Lead-acid is between 5–10 years.

Q: What are the three types of energy storage?

A: There are many types of energy storage options, including batteries, thermal, and mechanical systems, though batteries are predominantly used for residential, commercial, and bulk storage in New York State.

Q: How long will a 200W solar panel charge a 100Ah battery?

A: A 200W solar panel will take approximately 5-8 hours of peak, direct sunlight to fully charge a completely depleted 100Ah battery under optimal conditions, though this can vary significantly depending on the solar panel's efficiency, charge controller, battery type, and the intensity and duration of sunlight available. Factors like shading, panel angle, temperature, and charging system efficiency will influence the actual charging time.

Q: Are you manufacturer or trading company?

A: We are manufacturer.

Q: What's your best delivery time?

A: Within 15-30 days.

Q: What is the quality control of your product?

A: Follow strictly quality control measures for implementation,

Q: Will your company provide free sample?

A: It depends on which sort of item you want to get. Some can be provided free of charge, however, the client shall assume the shipping fees himself.

Q: Is OEM open to clients?

A: Yes, we can provide both OEM and ODM service.

Q: What is the payment of sample?

A: T/T and Alipay both acceptable.

Q: What is your packing?

A: Yes, our packaging is genuine original packaging. Of course, we can also provide neutral packaging or according to your requirements

Q: What is your sample policy?

A: If we have stock, we can provide samples, but the customer must pay the sample fee and express fee Question

Q: Have you tested all your goods before shipment?

A: Yes, we will conduct 100% test before delivery, and we will send detailed photos of parts for your approval Question .

We're well-known as one of the leading low voltage soft starter manufacturers and suppliers in China. Please feel free to buy customized low voltage soft starter made in China here from our factory. For pricelist and quotation, contact us now.

low voltage soft starter, soft starter, Solid State Soft Start