Allen‑Bradley 1756‑A4 ControlLogix 4‑Slot PLC Chassis Rack

Allen‑Bradley 1756‑A4 ControlLogix 4‑slot chassis (rack) for mounting controllers, I/O modules, and communication modules in industrial automation systems.

Applications:

• Small ControlLogix system assembly

• Distributed control cabinet installation

• Machine control chassis

• Process control equipment rack

• Remote I/O chassis in distributed systems

Key Features:

• 4 universal slots (any module type)

• Backplane communication for ControlLogix X‑bus

• Panel or DIN rail mount (adapter required for DIN rail)

• Compatible with 1756 series controllers, I/O, and communication modules

• 0°C to 60°C operating temperature

Technical Specifications:

• Slots: 4 (universal)

• Power supply: External 1756‑PA72 or 1756‑PB72

• Mounting: Panel mount (standard), optional DIN rail kit (1756‑DHK)

• Dimensions: 123 × 181 × 98 mm (4.84 × 7.14 × 3.86 in)

• Weight: 1.04 kg (2.29 lb)

• Operating temperature: 0°C to 60°C

• Protection rating: IP20

System Integration:

• Controllers: ControlLogix 1756‑L83E, 1756‑L71, 1756‑L61

• Communication Modules: 1756‑EN2TR EtherNet/IP, 1756‑CN2R ControlNet

• I/O Modules: 1756‑IB32 Digital Input, 1756‑OB32 Digital Output, 1756‑IF16 Analog Input

• Power Supply: 1756‑PA72 AC Power Supply, 1756‑PB72 DC Power Supply

Related Products:

• Larger Chassis: 1756‑A7 (7 slots), 1756‑A13 (13 slots) – expansion

• Controller: 1756‑L83E ControlLogix – system core

• Power Supply: 1756‑PA72 AC Power Supply – rack power

• Ethernet Module: 1756‑EN2TR EtherNet/IP – network communication

PLC ERA is an independent industrial automation distributor. Products are sourced from established supply channels and inspected before shipment. International shipping available.