The Allen Bradley 1771-A4B is a high-performance I/O chassis assembly engineered for industrial automation systems. Designed as the backbone for PLC configurations, it provides scalable input/output capabilities with robust expansion options, essential for complex control applications in manufacturing and process industries.
| Parameter | Specification |
|---|---|
| Brand | Allen Bradley |
| Module Type | I/O Chassis |
| Enclosure | Open Style |
| Mounting | Back Panel |
| I/O Slots | 16 Slots |
| Weight | 7.7 kg |
| Product ID | 1771-A4B |


Industrial Applications: Optimized for PLC-5 control systems, this chassis supports critical operations in:
• Motor control centers
• Production line automation
• Material handling systems
• Process monitoring installations
Compatible Modules: 1771-IA, 1771-OB, 1771-IF, 1771-OF series I/O cards
About Hong Kong Saul Electric Co., Ltd.
With 15+ years as Asia’s premier industrial automation supplier, we maintain the region’s largest inventory of specialized components, including certified Allen Bradley solutions. Our expertise covers 40+ global brands including GE, ABB, and Triconex.
Our Commitment:
• 1-year performance warranty on all components
• Pre-sales technical consultation for system integration
• Expedited global shipping with real-time tracking
• Custom sourcing for obsolete or hard-to-find models
Contact for Pricing & Availability:
WhatsApp: +86 18030274832
Email: 3931184055@qq.com



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