Overview
The Allen-Bradley 1771-WH is a swing arm terminal block assembly engineered for field wiring applications in PLC-5 control systems. This 21-terminal configuration offers a convenient, space-efficient solution for connecting field devices, sensors, and actuators to legacy programmable logic controller installations. The swing arm design allows for easy access and maintenance of individual terminal connections without requiring complete system disassembly.
Key Features
- 21 individual screw-post terminals for field device connections
- Swing arm design for simplified troubleshooting and wire management
- Compatible with PLC-5 automation systems
- Rated for standard industrial control voltage applications
- Proven reliability in legacy automation deployments
Technical Specifications
- Part Number: 1771-WH
- Internal Designation: AB21WXM
- Terminal Count: 21 screw posts
- Block Type: Swing arm field wiring terminal
- System Compatibility: PLC-5
- Manufacturer: Buchanan (Allen-Bradley)
- Condition: Used, fully functional
Typical Applications
The 1771-WH terminal block is ideal for:
- Factory automation and manufacturing control systems using PLC-5 platforms
- Machine tool wiring and sensor integration
- Industrial process control field device interconnection
- Legacy system maintenance and troubleshooting
- Panel wiring consolidation in retrofit and upgrade projects
Compatibility & Replacements
Compatible With
- Allen-Bradley PLC-5 systems
- Legacy industrial automation platforms requiring 21-terminal field wiring blocks
- Standard industrial control enclosures and DIN rail mounting systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or controls engineer before ordering, as terminal block compatibility depends on specific PLC-5 configuration and wiring scheme.
Works With
- Allen-Bradley PLC-5 automation software
- Field device sensors, switches, and actuators
- Industrial control enclosure wiring systems
