ABB 1SFA898121R7000 PSTX1250-600-70 1250A 208-600V AC 3P 710kW Soft Starter

The ABB PSTX1250-600-70 (SKU: 1SFA898121R7000) is a 1250 A, 710 kW electronic soft starter from ABB's advanced PSTX series, designed to provide smooth, controlled motor starting and stopping for high-power three-phase AC applications. Operating across a wide supply voltage range of 208–600 V AC with a control voltage of 110–250 V, the PSTX1250-600-70 delivers precise torque control, reduced inrush current, and comprehensive motor protection in a robust industrial package.

Technical Specifications

Certifications & Standards

• IEC 60529: International standard for degrees of protection provided by enclosures (IP rating)
• IEC 60947-1: International standard for low-voltage switchgear and controlgear — general rules
• EN 60529: European harmonised standard for enclosure protection degrees (IP classification)
• CSA: Canadian Standards Association certification for North American market compliance
• REACH: EU regulation compliance for chemical substances — confirms safe material composition
• RoHS: Restriction of Hazardous Substances directive compliance — lead-free and environmentally responsible
• WEEE: Waste Electrical and Electronic Equipment directive compliance for end-of-life recycling
• CCC: China Compulsory Certification for sale and use in the Chinese market
• CE: European conformity marking confirming compliance with applicable EU directives

Applications & Use Cases

The PSTX1250-600-70 is engineered for demanding industrial motor control scenarios where high starting currents must be limited to protect both the motor and the supply network. Its wide voltage range and 1250 A rating make it ideal for:

• Large pump and compressor drives in water treatment, oil & gas, and HVAC systems
• High-power fan and blower applications in process industries
• Conveyor and crusher drives in mining and bulk material handling
• Centrifugal pumps and mixers in chemical and food processing plants
• Heavy-duty motor starting in power generation and utility infrastructure

By delivering a controlled ramp-up of voltage and torque, the PSTX1250-600-70 eliminates mechanical shock at start, extends motor and driven-equipment service life, and reduces maintenance costs — a key advantage over direct-on-line or star-delta starters in high-inertia load applications.

Frequently Asked Questions

Q: What is the supply voltage range of the PSTX1250-600-70?
A: The PSTX1250-600-70 operates on a supply voltage of 208–600 V AC, making it compatible with most international three-phase industrial networks.

Q: What control voltage does this soft starter require?
A: The control circuit operates at 110–250 V, accommodating both 110 V and 230 V control supplies without additional transformers in most installations.

Q: What motor power rating does the PSTX1250-600-70 support?
A: It is rated for motors up to 710 kW at the nominal voltage range, paired with a 1250 A continuous current capability.

Q: Is the PSTX1250-600-70 suitable for use in China?
A: Yes. The product holds CCC (China Compulsory Certification), confirming it meets Chinese regulatory requirements for import and deployment.