1771-WH PLC-5 | Allen-Bradley BASIC Communication Module Terminal Arm
Manufacturer: Allen Bradley
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Part Number: 1771-WH
Condition：New with Original Package
Product Type: PLC-5 Fused Field Wiring Arm
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Description
The Allen-Bradley 1771-WH is a removable field wiring arm designed for use with selected 1771-series I/O modules in the PLC-5 / 1771 I/O platform. It provides the field-side terminal interface between plant wiring and the I/O module, allowing safe and organized connection of sensors and actuators.
This version includes tin-plated terminals and integrated 1.5 A fuses per output channel (where applicable), offering additional circuit protection for output modules. The wiring arm attaches to the front of compatible 1771 modules and can be removed without disturbing field wiring, enabling fast module replacement and reduced maintenance downtime.
The 1771-WH is discontinued by the manufacturer but remains widely used in legacy PLC-5 systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Model | 1771-WH |
| Product Type | Removable Field Wiring Arm |
| Platform | PLC-5 / 1771 I/O |
| Terminal Count | 21 terminals |
| Terminal Type | Screw-clamp, tin-plated |
| Fuse Protection | 1.5 A fuse per output (for compatible output modules) |
| Wire Size Range | 22–14 AWG (0.34–2.1 mm²) copper |
| Mounting Method | Front-mounted, snap-in design |
| Connection Type | Removable terminal block interface |
| Material | Industrial-grade molded thermoplastic |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | –40°C to +85°C |
| Humidity | 5–95% non-condensing |
| Weight | 0.18 kg |
| Certifications | UL, cUL (depending on production series) |
| Lifecycle Status | Discontinued (Legacy Support) |