Description

The 1SFA892006R1002​ is an ABB PSS60/105-500L solid-state Soft Starter from ABB’s PSS (Plug-in Solid-State) series, designed to reduce inrush current and mechanical stress during AC induction motor start-up. It supports both in-line (60 A rated) and inside-delta (105 A rated) connection modes for motors up to 30 kW @ 400 V (in-line) or 55 kW @ 400 V (inside-delta). The main circuit operates on 208–500 V AC, with a 220–240 V AC control supply. The 1SFA892006R1002​ features rotary DIP-switch configuration for start/stop ramp time (1–30 s), initial voltage (30–70 %), and current limit (1.5–4 × Ie with external CT), plus built-in run/bypass/fault signal relays — making it a cost-effective, panel-space-saving alternative to star-delta starters in pumps, fans, compressors, and conveyors.

h2 Application Scenarios

In a municipal water pumping station, direct-on-line starting of a 45 kW centrifugal pump causes a violent water-hammer effect in the discharge piping every time the pump kicks in — loosening flange bolts and risking pipe joint failure. By retrofitting the starter panel with the 1SFA892006R1002​ configured for a 5-second voltage-ramp soft start and 3 × Ie current limit, the pump accelerates gradually, eliminating the pressure surge. The built-in bypass relay output can drive an external bypass contactor to remove thyristor heating during continuous run, extending device life. When a supply-phase unbalance occurs, the fault relay on the 1SFA892006R1002​ signals the PLC to inhibit restart — protecting the motor windings. This scenario shows how the 1SFA892006R1002​ directly solves the pain points of destructive inrush current, water hammer, and lack of start-feedback in basic DOL/star-delta setups.

h2 Parameter

h2 Technical Principles and Innovative Values

• Innovation Point 1 — Dual Connection Topology (In-Line & Inside-Delta) in One Compact Unit:​ The 1SFA892006R1002​ uniquely supports inside-delta (Δ) wiring where the starter sees only 1/√3 of the line current — allowing a 60 A-rated device to control a 105 A / 55 kW motor. This flexibility lets specifiers downsize the starter for the same motor power, saving panel space and CAPEX compared to in-line-only designs.
• Innovation Point 2 — Purely Electromechanical Setup with No Programming Required:​ Unlike digital soft starters needing HMI/software commissioning, the 1SFA892006R1002​ is configured entirely via sealed rotary DIP switches under the front cover — immune to keypad failure, password lock-out, or firmware corruption. This makes it ideal for harsh sites where only electricians (not automation engineers) perform commissioning.
• Innovation Point 3 — Integrated Bypass & Fault Relays for Seamless External Integration:​ The onboard bypass-relay contact can energize an external 3-pole AC contactor to take over current-carrying duty once the motor reaches full speed, minimizing thyristor heat dissipation. Simultaneously, the NO fault relay provides a dry contact to the plant PLC or alarm annunciator — enabling condition-based rather than time-based maintenance.

h2 Application Cases and Industry Value

Case Study — Food Processing Plant Conveyor Line Upgrade:A snack-food producer experienced frequent belt-joint shear on a 37 kW incline conveyor started DOL. The maintenance team replaced the magnetic starter with a 1SFA892006R1002​ PSS60/105-500L, set for 4 s ramp-up, 2 s soft-stop, and an external bypass contactor triggered by the starter’s bypass relay. Post-retrofit, belt-start jerk was eliminated — no further belt splice failures in 18 months — and the external bypass kept the soft starter cool during 12-hour shifts. The plant reported a 22 % reduction in unplanned conveyor downtime and appreciated the simple DIP-switch setup which required no specialist training. The 1SFA892006R1002​ directly delivered measurable OEE improvement on a modest capital spend.