abb softstarter PSTX250-690-70 pstx (690v) range 250 amp

Why Choose the PSTX250-690-70 [1SFA898213R7000]

The softstarter PSTX250-690-70 has a rated maximum operational current of 250 A with an operating voltage span from 208...690 V AC. The rated control voltage is between 100...250 V AC at 50/60 Hz. PSTX features a three-phase control soft start and stop through a voltage or a torque ramp. It has built-in bypass for easy installation and energy saving. A RUN, TOR and Event signal is available from relay outputs in NO (normally open state). The PSTX has functions such as current limit, kickstart, analog output, EOL, motor heating and pump cleaning. PSTX also features features jog, braking, stand-still brake, diagnostics, sequence start and emergency/fire pump mode as standard.To interact with PSTX, it has a detachable full graphic display with IP66 and 4x outdoor rating. There are four ways to communicate with PSTX. It can be done by hardwire inputs Start/Stop/Reset of fault, and by three programmable digital inputs. Another popular option is the built-in Fieldbus communication Modbus RTU and incl optional ANYBUS modules with every major protocol such as for example Profinet, Profibus, Modbus TCP, Ethernet IP and others. Another way to communicate with PSTX is to use an external adaptor and a Fieldbus plug. PSTX is the complete alternative for any motor starting application. It’s suitable for medium to large-sized three-phase motors with nominal currents from 30...1250 A inline connection or 52...2160 A inside delta connection. Typical applications are, for example, pumps, fans, compressors, and conveyors.

Technical Specification

• Function: Soft start and stop with three-phase control, voltage or torque ramp, built-in bypass, current limit, jog, braking, diagnostics, and emergency pump mode.
• Voltage Rating: 208 ... 690 V AC operational voltage.
• Current Rating: Rated operational current 250 A (in-line connection), 430 A (inside delta connection).
• Control Voltage: 100 ... 250 V AC supply, 24 V DC control circuit.
• Communication: Modbus RTU, optional ANYBUS modules (Profinet, Profibus, Modbus TCP, Ethernet IP, etc.), plus hardwired inputs.
• Protection Rating (IP): Detachable full graphic display with IP66, main terminals IP00.
• Terminal Type and Size: Main circuit terminals with 8.5 mm hole diameter, connecting capacity up to 2.5 mm² rigid conductors.
• Mechanical Data: Weight 15.5 kg, tightening torque main circuit 25 N·m (221.3 in-lb UL/CSA).

Trusted By Customers Worldwide

"Specified by UK panel builders for dependable control." Controls Engineer, UK