The ABB ACS355-03E-31A0-4 is a compact, general-purpose AC drive (variable frequency drive - VFD) from ABB's ACS355 series. It is designed for simple and cost-effective motor speed control in a wide range of industrial applications, particularly for pumps, fans, conveyors, and basic material handling.

The ABB NDCU-33CX is a Network Interface and Distributed I/O Controller Unit belonging to the ABB Freelance distributed control system (DCS) family. Specifically, it is a crucial component of the AC 800F series I/O Station.

The ABB NIOC-02C is an Industrial Digital Input Module for ABB's AC 500 PLC (Programmable Logic Controller) series, specifically belonging to the ECO (Basic) or PM5xx (High Performance) I/O module range . It provides a standardized interface for connecting digital field devices (such as push buttons, limit switches, proximity sensors, and selector switches) to the PLC's central processing unit (CPU).

The ABB PSTB 840-600-70 is a Type 1 / Class B + Type 2 / Class C Combined Surge Protective Device (SPD). It is a heavy-duty, four-pole SPD specifically designed for installation at the service entrance or main distribution board of three-phase low-voltage AC power systems (TN-S, TN-C-S, TT).

The ABB FPNO-21 is an overvoltage protection device designed for sensitive measuring and control circuits. Specifically, it is a combined voltage limiter that safeguards instrumentation and low-voltage control lines (such as 4-20 mA, 0-10 V signals, or telecom/data lines) against transient overvoltages induced by lightning strikes, switching operations, or electrostatic discharge.

The ABB ZlNT-571 is a 9-pole signal interface and isolation relay module belonging to the ABB ZlNT product series. It is designed for industrial automation and control systems to provide electrical isolation, signal conversion, and contact multiplication between field devices (like sensors, switches) and control systems (like PLCs, DCS, or relays).

The ABB PSPCB-CP-2 is a Surge Protective Device (SPD) Module designed for Commercial and Industrial (C&I) Applications. It is a Compact, Plug-in Cartridge that provides Type 2 / Class C protection against transient overvoltages caused by indirect and direct lightning effects, as well as switching surges within electrical installations.

The ABB 1SFB536271A1008 is a PROFIBUS DP-V1 communication interface module specifically designed for ABB PSR series soft starter combination units. This plug-in accessory enables seamless integration of PSR soft starters into PROFIBUS DP industrial automation networks, allowing for remote control, monitoring, and diagnostics through a standardized fieldbus interface.

The ABB 1SFB536268D1008 is a specialized interface or configuration module designed for ABB's modular low-voltage motor control and protection systems. This specific part number identifies a dedicated accessory that adds critical functionality—most commonly communication interfacing or application-specific configuration—to compatible ABB devices such as motor protective relays, soft starter combinations, or intelligent motor starters.

The ABB UL-740A-R2A-B024-021 is a dedicated redundant power supply module designed for the ABB Symphony Harmony/Melody and S800 I/O distributed control systems (DCS). This unit provides reliable, redundant DC power to critical control system components, ensuring continuous operation and high availability in industrial automation environments such as power plants, oil refineries, and chemical processing facilities.