Allen-Bradley 1756-A4LXT Chassis

Series#: AllenBradley

Product Details

Model 1756-A4LXT – High-performance 4-slot ControlLogix chassis designed for extreme temperature environments.
Extended temperature range (-25°C to +70°C) for harsh industrial applications.
Supports up to 4 standard ControlLogix modules with high-density backplane connectivity.
Rugged aluminum construction with integrated EMI/RFI shielding for noise immunity.
Hot-swappable module slots with redundant power input capability (requires compatible power supply).
Compliant with Class I, Division 2 hazardous location standards for oil & gas, mining, and chemical plants.

Specification

The Allen-Bradley 1756-A4LXT is a specialized 4-slot ControlLogix chassis engineered for applications demanding extreme temperature tolerance and robust reliability. As part of the ControlLogix family, this chassis provides a compact yet scalable platform for deploying I/O modules, communication interfaces, and controllers in environments where standard components fail. The 1756-A4LXT is ideal for remote pipelines, outdoor skids, and steel mills, offering seamless integration with existing 1756-series modules while maintaining full compliance with industrial safety standards. Its extended-temperature design ensures uninterrupted operation from arctic cold to desert heat, making it a preferred choice for mission-critical automation systems worldwide.

Parameter	Specification
Model Number	1756-A4LXT
Product Type	ControlLogix Chassis (Extreme Temperature)
Number of Slots	4
Backplane Current Capacity	10 A Standard Models 5.1 VDC (standard modules), 3.2 A Standard Models 24 VDC (field power)
Operating Temperature Range	-25°C to +70°C (-13°F to +158°F)
Storage Temperature Range	-40°C to +85°C (-40°F to +185°F)
Relative Humidity	5% to 95% non-condensing
Vibration Resistance	2 g Standard Models 10-500 Hz (operating)
Shock Resistance	30 g peak, 11 ms duration
Enclosure Material	Aluminum alloy with conductive coating for EMI/RFI shielding
Mounting Method	Panel mount or DIN rail (via optional adapter)
Power Supply Compatibility	1756-PA72, 1756-PB72, 1756-PA75, 1756-PB75 (all standard ControlLogix power supplies)
Module Compatibility	All standard 1756 series modules (controllers, I/O, communication, motion)
Hazardous Location Rating	Class I, Division 2, Groups A, B, C, D (T4)
Protection Rating	IP20 (NEMA 1)
Weight	Approx. 1.2 kg (2.65 lbs)
Dimensions (H x W x D)	143 mm x 132 mm x 87 mm (5.63 in x 5.20 in x 3.43 in)
Certifications	UL 508, CSA C22.2 No. 142, CE, ATEX (Zone 2), IECEx