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0102030405

XST260 Smart Low-voltage Soft Starter Suppliers from China - 220/380/480V with Built-in Bypass Contactor

XST260 is an advanced smart soft starter equipped with a built-in bypass contactor, specifically designed for the control and protection of low-voltage asynchronous motors. As one of the leading products from our factory in China, the XST260 offers not only the standard features of a conventional soft starter but also unique functionalities tailored to address common issues encountered in applications such as water pumps, belt conveyors, and fans, This reliable soft starter supports a mains voltage range of AC 220V to 500V (including 220V, 380V, and 480V ±10%) and is suited for power applications ranging from 7.5 kW to 400 kW. It is compatible with squirrel cage AC asynchronous (induction) motors, making it an ideal solution for various industrial settings, As a trusted supplier in the industry, we ensure that the XST260 meets all quality standards to deliver optimal performance and reliability, promising enhanced efficiency for your motor control needs

Product Detail

Appearance

Item	Description
A	Terminals are on the top of the device, clearly marked, easy and quick to install, and convenient for wiring.
B	3.5-inch large display screen and status indicator screen, dual-screen display.
C	Plastic panels improve the safety of the entire machine.
D	Detachable keypad can be installed on the control cabinet door.
E	Clear status indication and alarm identification; quickly identify device status.

Basic Parameters

Parameter	Specification
Control voltage	AC110V - 220V ±15%, 50/60Hz
Mains Voltage	AC220V, AC380V, AC480V ± 10%
Nominal current	18A~780A, 20 rated values in total
Applicable motor	Squirrel cage AC asynchronous motor
Start methods	Voltage ramp start, Current ramp start, Pump start control, Direct start, Kickstart
Stop methods	Voltage ramp, Soft stop, Brake, Free stop, Pump stop
Logical input	Impedance 1.8 KΩ, Mains voltage +24V
Start frequency	No more than 10 times per hour (recommended)
IP	≤55kW, IP00 ≥75kW, IP20
Cooling type	≤55kW, Natural cooling ≥75kW, Forced air cooling
Installation type	Wall mounted
Communication method	RS485 (Optional)
Environmental condition	When sea altitude is above 2,000m, soft starter should be derated for use. Ambient temperature: -10 ~ +40°C Relative humidity: less than 95% (20°C±5°C) Free of flammable, explosive and corrosive gas or conductive dust. Indoor installation, good ventilation, vibration less than 0.5G

Features

Communication expansion card

Profibus communication expansion card can be built-in.
External keypad + extra large screen available

Easily removable keypad for remote operation.
Motor preheating

In low-temperature environments, the motor is heated before operation without the need for external heating equipment.
More comprehensive motor protection functions

Overvoltage protection, undervoltage protection, overcurrent protection, overload protection, stall protection, bypass fault, thyristor fault, three-phase current imbalance, motor overheating protection, etc.
Pump control function

Unique start and stop control for pump loads. The pump starting function reduces the starting current of pump loads; the pump stopping function reduces the water hammer effect.
Pump cleaning function

Self-service cleaning of siltation in the pump to prevent overflow, overload and other failures caused by blocked rotor.
Fan braking function

Dynamic braking can quickly stop the running load; static braking can bring the running load to a stop state under the action of external force.
Low speed operation function

It has the functions of low-speed forward rotation and low-speed reverse rotation, and can adjust the load running direction at low speed before the motor starts normally.
Wide supply voltage range

220V-500V main power input voltage.

Model Specifications

Applicable motor power (kW)	Model No.	Rated current (A)	Motor rated current (A)		Size of primary wires (copper wire)
Applicable motor power (kW)	Model No.	Rated current (A)	standard wiring	Inside delta connection	Size of primary wires (copper wire)
7.5	XST260-0018-03	18	18	32	4 mm²
11	XST260-0024-03	24	24	42	6 mm²
15	XST260-0030-03	30	30	52	10 mm²
18.5	XST260-0039-03	39	39	68	10 mm²
22	XST260-0045-03	45	45	78	16 mm²
30	XST260-0060-03	60	60	104	25 mm²
37	XST260-0076-03	76	76	132	35 mm²
45	XST260-0090-03	90	90	156	35 mm²
55	XST260-0110-03	110	110	190	35 mm²
75	XST260-0150-03	150	150	260	50 mm²
90	XST260-0180-03	180	180	312	30×4 copper bar
110	XST260-0218-03	218	218	378	30×4 copper bar
132	XST260-0260-03	260	260	450	30×4 copper bar
160	XST260-0320-03	320	320	554	30×4 copper bar
185	XST260-0370-03	370	370	640	40×5 copper bar
220	XST260-0440-03	440	440	762	40×5 copper bar
250	XST260-0500-03	500	500	866	40×5 copper bar
280	XST260-0560-03	560	560	969	40×5 copper bar
315	XST260-0630-03	630	630	1090	50×8 copper bar
400	XST260-0780-03	780	780	1350	50×8 copper bar

Standard wiring refers to the delta or star connection of the motor windings, and the thyristor of the soft starter is connected between the power supply and the motor.

Inner delta connection refers to the delta connection of the motor windings, and the thyristor is directly connected in series with the motor winding.

Drawings

Power range/kW	G	H	I	K	L	M	D	E	F	A/B/C	Net weight/kg
7.5 ~ 30	160	275	189	140	263	5.5	92	66	66	50	5.2
37 ~ 55	160	275	189	140	263	5.5	92	66	66	50	5.7
75 ~ 160	285	450	295	240	386	9	174	178	144	50	23.3
185 ~ 280	320	520	320	250	446	9	197	189	146	50	33.6
315 ~ 400	490	744	344	400	620	11	306	220	162	50	64.2

7.5kW ~ 55kW

75kW ~ 160kW

185kW ~ 280kW

315kW ~ 400kW

Applications

Belt conveyor

When material jam occurs, the low-speed forward and reverse functions can be used as appropriate to allow the belt conveyor to drive the jammed material back and forth to alleviate system jams.

Fan

Application of dynamic braking function: Dynamic braking can be used to quickly stop large inertia loads and solve the problem of long shutdown time of large inertia fans.

Application of static braking function: When the fan rotates due to external wind force, the static braking function can stop the fan first so that it can be started later.

Comprehensive moisture-proof and anti-corrosion solution

Water pump

Unique pump control features: Pump systems are susceptible to fluid shock and surge during motor starting and stopping. The pump control function can effectively control the load current when the pump starts and stops, extending the pump life.

When starting: In pump starting mode, the output voltage increases according to the pump load characteristic curve until the output voltage reaches full voltage.

When stopping: The pump stop curve can effectively slow down the water hammer phenomenon caused by the pump load when it stops.

Application scenarios for pump cleaning: When the blades are blocked by mud, the starting current of the water pump will be too large, resulting in overcurrent or overload protection. After using the pump cleaning function, the impeller is self-cleaned before the water pump is started to ensure normal pumping.

Frequently Asked Questions

What is the difference between standard wiring and inside delta connection?

Standard wiring refers to the delta or star connection of the motor windings, where the thyristor of the soft starter is connected between the power supply and the motor. Inside delta connection refers to the delta connection of the motor windings, where the thyristor is directly connected in series with the motor winding.

Under what environmental conditions should the soft starter be derated?

The soft starter should be derated for use when the sea altitude is above 2,000 meters. It is designed for operation in ambient temperatures between -10°C and +40°C, with a relative humidity of less than 95% (at 20°C±5°C).

How do the cooling types and IP ratings vary by power rating?

For units ≤55kW, the protection rating is IP00 and they utilize natural cooling. For units ≥75kW, the protection rating is IP20 and they utilize forced air cooling.

What protection features does this soft starter provide for motors?

It includes a comprehensive range of protection functions, such as overvoltage protection, undervoltage protection, overcurrent protection, overload protection, stall protection, bypass fault protection, thyristor fault protection, three-phase current imbalance protection, and motor overheating protection.

How does the pump cleaning function prevent pump failures?

When pump impellers are blocked by mud or silt, the starting current can become excessively large, triggering overcurrent or overload protection. The pump cleaning function performs self-service cleaning of siltation in the pump before it starts to prevent blocked rotor failures and ensure normal pumping.

What are the benefits of the dynamic and static braking functions for fans?

The dynamic braking function can quickly stop running loads to solve the problem of long shutdown times for large inertia fans. The static braking function stops the fan if it is rotating due to external wind force, allowing it to be started safely afterward.