1771-WH | Allen-Bradley | 21-Terminal PLC-5 Field Wiring Arm

Product Description

The 1771-WH field wiring arm from Allen-Bradley is designed for use with PLC-5 I/O modules, providing a secure and reliable interface for field wiring connections. Supporting up to 16 I/O circuits with 21 terminals, this wiring arm is engineered for general-purpose applications. Tin-plated contacts and conformal coating ensure durability and stable electrical performance in industrial environments.

Technical Specifications

• Manufacturer: Allen-Bradley

• Part Number: 1771-WH

• Product Line: PLC-5

• Product Type: Field Wiring Arm

• GTIN: 10612598003874

• Weight: 0.44 lbs (0.20 kg)

• Maximum I/O Supported: 16 I/O circuits

• Number of Terminals: 21

• Contact Plating: Tin

• Screw Torque: 7–9 lb·in

• Typical Application: General-purpose wiring for PLC-5 modules

• Coating: Conformal coat for environmental protection

• External Power Requirement: None

• Signal Delay:

• AC Off Delay: 29 ± 8 ms

• DC Off Delay: 30 ± 7 ms

• Compatible Wiring Arm: 1771-WN

Key Features

• High Capacity: Supports up to 16 I/O circuits with 21 terminals

• Durable Construction: Tin-plated contacts with conformal coating for reliability

• No External Power Needed: Simplifies installation and reduces wiring complexity

• Industrial Compatibility: Designed for general-purpose PLC-5 applications

Application Scenarios

• Field wiring for PLC-5 I/O modules

• General-purpose industrial automation systems

• Machine control requiring reliable wiring arms

FAQ

Q: How many I/O circuits can the 1771-WH support?  A: It supports up to 16 I/O circuits.

Q: What type of contact plating is used?  A: Tin plating for improved conductivity and durability.

Q: Does the 1771-WH require external power?  A: No, it does not require any external power.

Comparison with Similar Models

• 1771-WH: 21 terminals, supports 16 I/O circuits

• 1771-WD: 12 terminals, supports 8 I/O circuits

• 1771-WHF: Alternative wiring arm with different terminal configurations