Overview
The Allen-Bradley 198-MS4 Bulletin 198 push button switch Series A is a rugged industrial control component manufactured by Allen-Bradley for use in electrical equipment and automation systems. The 198-MS4 represents a classic push button solution for equipment control and operator interface applications across manufacturing, process control, and machine automation environments.
Key Features
- Robust industrial-grade push button actuator
- Bulletin 198 form factor for standard control panel installations
- Series A design for reliable on/off switching operations
- Compact form factor suitable for dense control panels
- Time-proven Allen-Bradley construction and reliability
Technical Specifications
Verify all specifications with your system integrator or Rockwell Automation distributor, as detailed technical data for this legacy model should be confirmed against your specific application requirements and installation environment.
Typical Applications
- Machine start/stop control
- Equipment on/off switching
- Industrial panel operator interfaces
- Manufacturing machinery control
- Process automation equipment
Compatibility & Replacements
Compatible With
- Allen-Bradley control panels and enclosures
- Industrial motor control circuits
- Standard electrical equipment installations
- Legacy automation systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Direct replacement information for this model should be confirmed with Rockwell Automation technical support or an authorized distributor.
Works With
- Allen-Bradley motor starters and contactors
- Industrial control relays
- Programmable logic controllers (PLCs)
- Traditional hard-wired control circuits


















