ABB DSSB140 48980001-AP/2
ABB DSSB140 48980001-AP/2
ABB DSSB140 48980001-AP/2
ABB DSSB140 48980001-AP/2
ABB DSSB140 48980001-AP/2

ABB DSSB140 48980001-AP/2 | Industrial Voltage Conversion Module for Control Systems

  • Brand: ABB
  • Model: DSSB140 48980001-AP/2
  • Product Type: DC/DC Converter
  • Series: Advant OCS (Open Control System)
  • Core Function: Converts input DC voltage to stable output for industrial control systems; provides electrical isolation and power conditioning.
  • Key Specs: 95% efficiency, 240W maximum output power, 24V DC output (configurable).
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Part number: ABB DSSB140 48980001-AP/2
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Description

DSSB140 48980001-AP/2: Product Overview
This component is a DC/DC converter designed for integration within ABB’s Advant Open Control System (OCS), a distributed control system (DCS) architecture. Its position in an automation system is to serve as a dedicated power supply module, typically mounted in an Advant I/O station or control cabinet. It provides stable, isolated DC power to sensitive electronic devices such as I/O modules, sensors, and communication interfaces, ensuring reliable operation in electrically noisy industrial environments.
The core functionality involves converting an input DC voltage (e.g., 48V, 60V, or 110V DC) to a regulated output (commonly 24V DC), while maintaining electrical isolation between input and output circuits. It processes voltage and current signals to prevent overvoltage, overcurrent, and short-circuit conditions, and filters output ripple to less than 1% for clean power delivery. The module also supports parallel operation for redundancy in critical applications.
This converter belongs to the Advant OCS product family, a platform recognized for its modularity, scalability, and adherence to industrial power standards (IEC 61010). Benefits include simplified system integration via plug-and-play design, reduced field wiring through localized power distribution, and enhanced system availability via hot-swappable components. The platform’s focus on reliability makes it suitable for continuous process industries like power generation, chemical processing, and water treatment.

ABB DSSB140 48980001-AP/2

ABB DSSB140 48980001-AP/2

DSSB140 48980001-AP/2: Technical Specifications
  • Model Number: DSSB140 48980001-AP/2
  • Manufacturer: ABB
  • Product Type: DC/DC Converter
  • Input Voltage: 36-72V DC (nominal 48V DC)
  • Output Voltage: 24V DC (adjustable ±10%)
  • Output Power: 240W maximum
  • Efficiency: 95% typical at full load
  • Isolation: 1500Vrms input-to-output
  • Output Ripple: <1% peak-to-peak
  • Protection Features: Overvoltage, overcurrent, short-circuit, overtemperature
  • Operating Temperature: -10°C to +55°C
  • Storage Temperature: -40°C to +70°C
  • Dimensions: 100mm (H) x 45mm (W) x 119mm (D)
  • Weight: 0.5 kg
  • Certifications: CE, UL, cULus
Core Features & Customer Value​
High efficiency reduces energy consumption. The 95% conversion efficiency minimizes power loss as heat, lowering operational costs in 24/7 applications like remote I/O stations or unmanned facilities. For plant operators, this translates to reduced cooling requirements and extended component lifespan.
Electrical isolation enhances system safety. The 1500Vrms isolation barrier prevents ground loops and transient voltages from damaging sensitive control electronics. In environments with mixed grounding schemes (e.g., legacy systems), this protects against cross-system interference, reducing troubleshooting time and equipment repair costs.
Compact design optimizes cabinet space. At 100x45x119mm, the module fits into dense I/O racks without requiring additional footprint. For engineers designing control panels, this simplifies layout planning and allows higher I/O density per cabinet.
Robust protection mechanisms ensure uptime. Built-in safeguards against overvoltage (e.g., from battery charging), overcurrent (e.g., shorted sensors), and overtemperature (e.g., poor ventilation) prevent module failure. For maintenance teams, this means fewer unplanned shutdowns and lower spare parts inventory.
Parallel operation supports redundancy. Two modules can be configured for N+1 redundancy, where the secondary unit activates automatically if the primary fails. In critical applications like safety instrumented systems (SIS), this meets availability requirements without complex external switching circuits.

ABB DSSB140 48980001-AP/2

ABB DSSB140 48980001-AP/2

Typical Applications​
In a natural gas pipeline compressor station, this converter supplies 24V DC power to an Advant OCS remote I/O station monitoring pressure transmitters and valve positions. Its isolation protects the I/O modules from voltage spikes induced by nearby motor starters.
At a municipal water treatment plant, the module powers PLC I/O modules in a chemical dosing skid. The 95% efficiency reduces heat dissipation in the enclosed skid, while parallel operation ensures continuous power during maintenance.
In a steel mill’s rolling mill control system, the converter provides stable power to PROFIBUS DP fieldbus couplers. Its wide operating temperature range (-10°C to +55°C) withstands the hot, dusty environment near the mill stand.
For an offshore oil platform’s fire and gas detection system, the module’s isolation prevents corrosion-induced ground faults from disrupting sensor power, ensuring reliable alarm signaling.

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