ABB 1SFA898118R7000 PSTX720-600-70 Softstarter

Key Features

• Integrated Bypass – Reduces energy consumption and heat generation after motor reaches full speed

• Torque Control – Advanced motor control for smooth starting and stopping, particularly beneficial for pump applications to eliminate water hammer

• Detachable Graphical Display – Full graphic HMI with IP66 rating and 15 languages for easy setup and operation

• Built-in Modbus RTU – Standard communication interface for monitoring and control

• Electronic Overload Protection – Adjustable trip classes for normal-duty and heavy-duty applications

• Coated Circuit Boards – Protection against dust, moisture, and corrosive atmospheres

• Multiple Application Modes – Jog, braking, standstill brake, pump cleaning, and emergency/fire pump mode

Technical Parameters

Core Advantages

1. Integrated Bypass for Energy Savings

The PSTX720-600-70 includes an integrated bypass that automatically closes after the motor reaches full speed. This bypasses the thyristors during normal operation, eliminating their power losses and reducing heat generation in the cabinet. The result is lower energy consumption and longer softstarter life .

2. Advanced Torque Control for Pump Applications

ABB's torque control technology, developed in collaboration with pump manufacturers, ensures optimal motor control during starting and stopping. This is particularly critical for pumping applications, where it eliminates water hammering and pressure surges that can damage piping and valves .

3. Inside-Delta Connection for High-Power Motors

The softstarter supports inside-delta connection, allowing it to control motors with power ratings up to 710 kW at 400 V — far exceeding the in-line capability of 400 kW. This configuration enables the use of a smaller softstarter for a given motor power, reducing cost and cabinet space .

4. Comprehensive Protection Suite

The built-in electronic overload protection is adjustable to different trip classes (10, 20, 30) for normal-duty and heavy-duty applications. Additional protections include:

• Phase reversal and current imbalance

• Over/under voltage

• Ground fault

• Locked rotor

• Motor underload

• PTC/PT100 thermal sensor inputs

5. Flexible Communication Options

Standard Modbus RTU communication is built-in, while optional Anybus modules enable integration with Profinet, Profibus, Modbus TCP, EtherNet/IP, and other major protocols. This makes the PSTX720-600-70 suitable for both standalone and networked motor control systems .

6. User-Friendly Interface

The detachable full graphical display with IP66 rating provides clear text information in 15 languages, simplifying setup and operation. Real-time clock, event log, and secure settings (keypad password) are standard features .

Applications

The ABB PSTX720-600-70 is deployed across a wide range of industrial motor control applications:

Recommended Models & Related Products

Note: The PSTX720-600-70 is rated for 208–600 V AC main circuit voltage. For applications requiring up to 690 V AC, select the PSTX720-690-70 variant .

What's Included

• 1 × ABB PSTX720-600-70 Softstarter (1SFA898118R7000)

Note: External bypass contactor (if required), line contactor, fuses/circuit breaker, and communication modules are sold separately.

Why Buy From Us?

• New and Original – Genuine ABB product

• In Stock – Ready to ship same/next business day

• Fully Tested – Each unit verified for functionality

• Warranty Included – Purchase with confidence

• Technical Support – Application assistance available

Frequently Asked Questions (FAQ)

Q1: What is the ABB 1SFA898118R7000?

It is a PSTX720-600-70 softstarter from ABB's PSTX series, rated at 720 A for in-line connection with a main circuit voltage range of 208–600 V AC. It is used for controlled starting and stopping of medium to large three-phase motors .

Q2: What is the difference between the PSTX720-600-70 and PSTX720-690-70?

The -600-70 variant is rated for 208–600 V AC main circuit voltage. The -690-70 variant is rated for 208–690 V AC and has a higher insulation voltage (690 V vs 600 V). Select the -690-70 for applications above 600 V .

Q3: What is the rated current and power of this softstarter?

The rated operational current is 720 A for in-line connection. Power ratings are:

• 200 kW at 230 V

• 400 kW at 400 V

• 500 kW at 500 V

For inside-delta connection, the ratings increase to 355 kW at 230 V and 710 kW at 400 V .

Q4: What is the control voltage for this softstarter?

The control supply voltage (Us) is 100–250 V AC, 50/60 Hz. The control circuit voltage (Uc) is 24 V DC .

Q5: Does the PSTX720-600-70 have a built-in bypass?

Yes. It features an integrated bypass that activates after motor startup, reducing energy consumption and heat generation .

Q6: What communication protocols are supported?

Modbus RTU is built-in as standard. Optional Anybus modules enable Profinet, Profibus, Modbus TCP, EtherNet/IP, EtherCAT, DeviceNet, CANopen, and BACnet .

Q7: What is the starting capacity?

The softstarter can handle 4 × Ie for 10 seconds at maximum rated current .

Q8: What are the dimensions and weight?

Approximately 435 × 493 × 368 mm and 46.2 kg net weight .

Q9: Does it have electronic overload protection?

Yes. The built-in electronic overload protection is adjustable to different trip classes (10, 20, 30) for normal-duty and heavy-duty applications .

Q10: Can it be used with inside-delta connection?

Yes. The PSTX720-600-70 supports both in-line and inside-delta connection. In inside-delta configuration, the rated operational current increases to 1247 A and power ratings increase significantly .

Q11: What is the operating temperature range?

The softstarter operates from -25°C to +60°C .

Q12: Is this a genuine ABB product?

Yes. This is a new and original ABB product with catalog number 1SFA898118R7000.