FST-3000 AC Soft Starters Built in Bypass Motor Starter 5.5kW-630kW

Name: FST-3000 AC Soft Starters Built in Bypass Motor Starter 5.5kW-630kW
Brand: Anyhertz Drive(Shenzhen) Co., Ltd.
SKU: FST-3000 Series
Availability: InStock

Place of Origin:Made in China

Brand Name:AnyHz

Model Number:FST-3000 Series

Minimum Order Quantity:1

Payment Terms:T/T

FST-3000 Manual.pdf

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Product Details

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AC Soft Starter 5.5kW

Built in Bypass Motor Starter

Soft Starters 630kW

Power Range: 5.5kW-630kW

Name: FST-3000 AC Soft Starters Built In Bypass Motor Starter 5.5kW-630kW

Product Description

Soft Starters | FST-3000 Serise Built-in Bypass Motor Starter 5.5kW-630kW

Soft Starters Built-in Bypass 5.5kW-630kW Intelligent Starting

The Anyhz FST-3000 is a new generation built-in bypass soft starter designed for 3-phase AC induction motors from 5.5kW to 630kW. This innovative motor soft starter integrates the bypass contactor and thermal overload relay internally—eliminating external components, reducing panel size by 40%, and simplifying installation.

Unlike traditional soft starters that require separate bypass contactors, the FST-3000's built-in bypass design automatically transfers the motor to line power after starting, minimizing heat generation and energy loss during run mode. With 6 intelligent starting modes, comprehensive protection functions, and LCD display with Chinese/English interface, this electronic soft starter provides smooth, controlled acceleration while reducing starting current by 60-70%—protecting mechanical equipment and extending motor life.

Why Choose FST-3000 Soft Starters?

All-in-One Design: Built-in bypass contactor + thermal relay reduces external wiring and panel space by 40%
6 Starting Modes: Current limiting, voltage ramp, kick start, and more for any soft starter application
Smart Stop Functions: Free stop, soft stop, and DC braking for controlled deceleration
Comprehensive Protection: Input/output phase loss, overload, overcurrent, imbalance, over/undervoltage, overheating
Easy Operation: Large LCD display shows current, voltage, faults, and parameters in Chinese or English
Communication Ready: Modbus RTU standard for remote monitoring and SCADA integration
Wide Power Range: 5.5kW to 630kW covers applications from pumps to large compressors
High Efficiency: >99.5% efficiency in bypass mode with near-zero power loss

Advanced Soft Starter Technology

Built-in Bypass Contactor

The integrated bypass contactor eliminates the need for external contactors and wiring traditionally required with motor soft starters. After the motor reaches full speed, the internal contactor automatically bypasses the thyristor power stage, running the motor directly on line power.

Electromechanical bypass contactor rated for continuous duty
Automatic transfer at 95-98% of nominal speed
Zero power loss in bypass mode (vs 2-4% with solid-state only)
Thyristor protection during bypass operation

Integrated Thermal Overload Relay

The built-in electronic thermal relay provides Class 10 motor protection without external overload relays. Using advanced thermal modeling algorithms, this intelligent soft starter calculates motor heating based on actual current and time.

Class 10A, 10, 20, 30 trip curves selectable
Phase imbalance and single-phasing protection
Ground fault detection (GF option)
PTC/NTC thermistor input for bearing/winding protection

Six Intelligent Starting Modes

The FST-3000 soft starter offers six starting modes to match any application requirement: Current limiting start for maximum current control; Voltage ramp start for smooth acceleration; Kick start for high-friction loads; Current ramp start for precise torque control; Jog/inching for positioning; and Swing start for conveyor applications.

Current limiting: 50-600% FLA adjustable
Voltage ramp: 1-120 seconds ramp time
Kick start: 0-2 seconds at 70-90% voltage
Soft stop: 1-60 seconds deceleration control
DC braking: 0-20 seconds for fast stopping

Soft Starter Applications

Centrifugal Pumps FST-3000 AC Soft Starters Built in Bypass Motor Starter 5.5kW-630kW 0

Centrifugal pumps benefit from soft starting by eliminating water hammer and pressure surges that damage pipes and valves. The current limiting start reduces inrush to 3-4× FLA (vs 6-8× with direct-on-line), preventing voltage dips that affect other equipment.

Key benefits: Eliminates water hammer, prevents pressure surges, dry-run protection, voltage dip mitigation
Typical configuration: 15kW-315kW for municipal and industrial pumps
Recommended soft starter models: FST-3015 (15kW), FST-3075 (75kW), FST-3155 (160kW)

Fans & Blowers FST-3000 AC Soft Starters Built in Bypass Motor Starter 5.5kW-630kW 1

Large fans and blowers have high inertia that causes belt squeal and mechanical stress during direct starting. The voltage ramp start of this motor soft starter provides smooth acceleration, eliminating belt slip and extending bearing life.

Key benefits: Eliminates belt squeal, reduces bearing stress, smooth acceleration, adjustable ramp time
Typical configuration: 22kW-500kW for HVAC and industrial fans
Recommended soft starter models: FST-3022 (22kW), FST-3110 (110kW), FST-3500 (500kW)

Air Compressors FST-3000 AC Soft Starters Built in Bypass Motor Starter 5.5kW-630kW 2

Air compressors require high starting torque to overcome initial compression. The kick start mode of this electronic soft starter provides the initial torque boost, then transitions to smooth ramping—eliminating mechanical shock that damages couplings and gears.

Key benefits: High starting torque, eliminates mechanical shock, soft stop prevents reverse rotation
Typical configuration: 30kW-400kW for industrial compressors
Recommended soft starter models: FST-3030 (30kW), FST-3090 (90kW), FST-3200 (200kW)

Conveyors & Crushers FST-3000 AC Soft Starters Built in Bypass Motor Starter 5.5kW-630kW 3

Conveyors and crushers with high inertia require controlled acceleration to prevent material spillage and mechanical stress. The swing start mode is specifically designed for these soft starter applications.

Key benefits: Controlled acceleration, prevents material spillage, reduces belt wear
Typical configuration: 45kW-630kW for mining and material handling
Recommended soft starter models: FST-3045 (45kW), FST-3160 (160kW), FST-3630 (630kW)

Soft Starter Technical Specifications

Power Range & Model Selection

Model	Power (380V)	Rated Current	Dimensions (mm)	Weight (kg)
FST-3005	5.5kW	10A	185×348×210	8.1
FST-3007	7.5kW	15A	185×348×210	8.2
FST-3011	11kW	24A	185×348×210	8.3
FST-3015	15kW	30A	185×348×210	8.45
FST-3018	18.5kW	37A	185×348×210	8.5
FST-3022	22kW	45A	185×348×210	8.55
FST-3030	30kW	60A	185×348×210	8.6
FST-3037	37kW	75A	185×348×210	8.65
FST-3045	45kW	90A	185×348×210	8.65
FST-3055	55kW	110A	185×348×210	8.7
FST-3075	75kW	150A	185×348×210	8.8
FST-3090	90kW	180A	300×605×250	30.0
FST-3110	110kW	230A	300×605×250	30.1
FST-3132	132kW	250A	300×605×250	30.3
FST-3160	160kW	300A	300×605×250	30.4
FST-3185	185kW	360A	300×605×250	30.5
FST-3200	200kW	400A	340×661×260	42.2
FST-3225	250kW	480A	340×661×260	42.3
FST-3280	280kW	560A	340×661×260	42.5
FST-3315	315kW	640A	340×661×260	42.6
FST-3355	355kW	700A	340×661×260	42.8
FST-3400	400kW	790A	340×661×260	42.9
FST-3500	500kW	1000A	340×661×260	43.0
FST-3630	630kW	1200A	340×661×260	43.2

Electrical Specifications

Control Power: AC 380V (-10% to +15%), 50/60Hz (internal, no external connection needed)
Input Power: AC 380V (-10% to +15%), 50/60Hz
Motor Type: General squirrel cage 3-phase AC induction motor
Starting Current: 2-4× FLA (adjustable 50-600%)
Starting Torque: 0-90% of DOL torque (adjustable)
Acceleration Time: 1-120 seconds (adjustable)
Starting Frequency: Max 15 starts per hour (standard duty)
Efficiency in Bypass: >99.5% (near-zero losses)
Protection: Input/output phase loss, overload, overcurrent, imbalance, over/undervoltage, overheating
Display: Large LCD, Chinese/English, shows current, voltage, faults, parameters
Communication: Modbus RTU standard
Installation: Wall-mounted
Environment: -25℃ to +40℃, humidity <90% (no condensation), altitude <1000m

Soft Starter Customer Success Stories

"We replaced 12 external-bypass soft starters with FST-3000 units in our water treatment plant. The built-in design saved us 30% panel space and 2 hours wiring time per unit. The LCD display makes troubleshooting easy—technicians can see exactly what's happening without a manual. Starting current dropped from 7× to 3× FLA, eliminating voltage dips that were affecting our SCADA system."
— Li Wei, Electrical Engineer, Guangdong Water Authority

"The FST-3000's kick start mode was perfect for our air compressors. It provides the initial torque to overcome compression, then ramps smoothly. We've eliminated the mechanical shock that was damaging couplings, and the soft stop prevents reverse rotation. After 18 months of 24/7 operation, zero failures."
— Wang Tao, Maintenance Manager, Shandong Chemical Plant

Product Summary

FST-3000 built-in bypass soft starter (5.5-630kW) reduces starting current 60-70%, saves 40% panel space, and offers 6 starting modes. Integrated bypass contactor and thermal relay eliminate external components for simplified installation and near-zero energy loss in run mode.

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