Overview
The ABB 0-51839-4 is a relay card component manufactured by Reliance Electric (now part of ABB/ASEA Brown Boveri). This IRCE series relay card is a printed circuit board assembly designed for use in industrial automation and servo control systems. The card serves as a critical control interface in PLC and motion control cabinets where reliable relay switching is essential for machine operation and safety circuits.
Key Features
- Seven relays configured in a V-shaped layout on the PCB
- Factory-drilled mounting points for secure installation
- Compatible with legacy Reliance Electric control systems
- Proven industrial-grade construction for reliable switching performance
- Discontinued product—available as used/surplus inventory
Technical Specifications
- Component Type: Relay Card PCB
- Manufacturer: Reliance Electric / ABB Baldor Reliance
- Series: IRCE
- Part Number: 0-51839-4 (Also marketed as 0518394)
- Relay Configuration: Seven relays in V-shape arrangement
- Mounting: Factory-drilled PCB with standard industrial bracket attachment
- Status: Discontinued by manufacturer
Typical Applications
The 0-51839-4 relay card is commonly used in:
- Legacy servo and stepper motor control systems
- PLC-based industrial automation cabinets
- Machine tool control and motion control interfaces
- Safety relay circuits in production machinery
- Retrofits and repairs for vintage Reliance Electric systems
Compatibility & Replacements
As a discontinued product, direct replacements may be limited. The 0-51839-4 is a specialized relay card that was integral to specific Reliance Electric/ABB control architectures. When replacing this component, system integrators should verify:
- Relay specifications (voltage, current, contact configuration)
- PCB mounting dimensions and connector pinouts
- Original system documentation and wiring diagrams
- Compatibility with existing cabinet hardware and firmware
For legacy system support or alternative relay solutions, consult with ABB technical support or experienced control system integrators familiar with Reliance Electric equipment.
