Overview
The Allen-Bradley 1771-WH field wiring arm is a rugged, connector-based solution for PLC 5 series I/O module wiring. Known also as the Buchanan 1771-WH, this 21-terminal arm simplifies field wiring while maintaining secure, repeatable connections. Tin-plated terminals with 1.5 A fuses per output provide built-in protection against overcurrent conditions, making it ideal for harsh industrial environments.
Key Features
- 21 terminals with 16 I/O points for flexible signal distribution
- 1.5 A fuse per output terminal for overcurrent protection
- Tin-plated terminals resist corrosion and ensure reliable long-term connections
- Thermoplastic construction with conformal coating for moisture and environmental protection
- Screw torque specification of 7–9 lb·in for secure, repeatable terminal engagement
- No external power required; passive wiring interface
Technical Specifications
- Terminals: 21 total (16 I/O channels)
- Terminal Material: Tin-plated
- Fuse Rating: 1.5 A per output
- Screw Torque: 7–9 lb·in
- Housing Material: Thermoplastic with conformal coating
- Dimensions: 4.5 × 12.4 × 6.3 inches (115 × 317 × 160 mm)
- Power Requirement: None (passive)
- Signal Delay (AC): 29 ±8 ms
- Signal Delay (DC): 30 ±7 ms
- Application: PLC 5 series industrial control
Typical Applications
- Allen-Bradley PLC 5 control systems in manufacturing and process automation
- Factory floor I/O distribution and field wiring termination
- Discrete input/output signal consolidation in control cabinets
- Legacy industrial equipment retrofit and replacement
- OEM panel building and commissioning
Compatibility & Replacements
Compatible With
- Allen-Bradley PLC 5 series controllers
- 1771-IBD, 1771-ICD, 1771-IGD, 1771-IMD, 1771-IND input modules
- 1771-OAD, 1771-OBD, 1771-OBDS, 1771-OGD output modules
- 1771-OMD output module
- 1771-IAD analog input module
Replaces / Drop-In Replacement For
- Buchanan 97611361 (equivalent part number)
- Rockwell Automation equivalent field wiring arms for PLC 5 I/O systems
Works With
- PLC 5 control platform and legacy Rockwell Automation systems
- Field wiring and terminal block applications
- UL 508 and CSA-compliant industrial control enclosures
