ABB PSTB1050-600-70 Soft Starter | 1050A 600V Industrial Motor Starter

Product Identity

• Model: PSTB1050-600-70
• Product Series: ABB PSTB Softstarter Family
• Product ID: 1SFA894020R7000
• Device Type: Industrial soft starter for high-power motors

Electrical Performance

• Main circuit voltage operates from 208 to 600 V AC.
• Rated operational current reaches 1050 A in in-line connection.
• Control supply accepts 100–250 V AC at 50/60 Hz.
• Control circuit supports 24 V DC logic signals.

Motor Power Capability

• In-line connection ratings
  • ➜ 560 kW at 400 V
  • ➜ 730 kW at 500 V
• Inside delta connection ratings
  • ➜ 1000 kW at 400 V
  • ➜ 1250 kW at 500 V
• Starting capacity supports 3 × Ie for 15 seconds.

Start and Protection Functions

• Ramp-up and ramp-down time adjustable from 0 to 120 seconds.
• Initial start voltage selectable between 30% and 70%.
• Current limit range adjustable from 1.5 to 7 × Ie.
• Built-in electronic overload protection ensures motor safety.

Monitoring and Signals

• Status indication
  • ➜ Green LED for ready or standby
  • ➜ Yellow LED for protection active
  • ➜ Red LED for fault condition
• Relay outputs include run, bypass, fault, and overload signals.
• Analog outputs support 0–10 V, 0–20 mA, and 4–20 mA signals.

Mechanical Design

• Net dimensions measure 436 mm × 515 mm × 381 mm.
• Net weight reaches 60 kg for stable cabinet mounting.
• Main power terminals use solid copper bars.
• Main terminal hole diameter measures 12.5 mm.

Environmental Limits

• Operating temperature range stays between 0 °C and +50 °C.
• Storage temperature range extends from -25 °C to +70 °C.
• Main terminals follow IP00 protection standard.

Application Benefits

• Reduces mechanical stress on motors and driven equipment.
• Lowers inrush current and minimizes voltage dips.
• Improves motor lifetime in pumps, compressors, and conveyors.

Warranty and Shipping

• Standard warranty covers 12 months.
• Each unit ships in reinforced industrial packaging.
• Delivery options include FedEx, UPS, and DHL.

FAQ | Technical Experience

• Is this soft starter suitable for high-inertia loads?
• The adjustable ramp and current limit handle heavy starting torque.
• Can this unit work with inside delta wiring?
• The design includes a dedicated switch for inside delta connection.
• Does the device support remote monitoring?
• Analog outputs and fieldbus options enable system integration.
• How many starts can the unit manage per hour?
• The device allows up to 10 starts per hour at defined load conditions.
• Does it replace traditional star-delta starters?
• The soft starter offers smoother control and stronger protection.

Contact Information

• Email: info@oiltechcontrols.com
• WhatsApp: +86 158 8020 0923

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