1715-A3IO | Allen Bradley Control System 3-Slot I/O Base Unit

Product Description

The Allen Bradley 1715-A3IO is a three-slot input/output base unit designed for distributed control systems. It provides reliable backplane connectivity, integrated fuse protection, and robust electrical performance for industrial automation environments. With compact dimensions and open-style construction, the module is engineered for efficient installation and dependable operation in demanding applications.

Technical Specifications

• Manufacturer Allen Bradley

• Product Line 1715 Series

• Product Type 3-Slot I/O Base Unit

• Part Number 1715-A3IO

• Wiring Category Category 2 (signal ports)

• Fuse Type 50 mA, 125 V, Type T

• Temperature Code (North America) T4

• Temperature Code (IEC) T4

• Enclosure Type Open-style (no housing)

• Backplane Current 165 mA @ 18–32 V DC

• Field Voltage Slew Rate (Max) 150 V/s

• De-energized Output Voltage Slew Rate (Max) 12 V/ms

• Energized Output Current Slew Rate (Max) 0.9 A/ms

• System Power Dissipation 3.0 W max

• Field Loop Power Dissipation 0.17 W per loop max

• Isolation Voltage 50 V continuous (basic insulation type, I/O ports to backplane)

• Type Test 500 V AC for 60 seconds

• Dimensions (D × W × H) 11.8 cm × 4.2 cm × 16.6 cm

• Weight 0.26 kg

• Shipping Weight 1.5 kg

Application Scenarios

• Distributed control systems requiring modular I/O expansion

• Machine-level automation with compact base units

• Industrial environments needing reliable backplane connectivity and fuse protection

FAQ

Q: What type of fuse does the 1715-A3IO use?  A: It uses a 50 mA, 125 V Type T fuse.

Q: Does the module provide isolation between I/O ports?  A: No, isolation is provided between I/O ports and the backplane only.

Q: What is the maximum system power dissipation?  A: 3.0 W maximum.

Comparable Models

• 1715-A3IO: 3-slot I/O base unit (this model)

• 1715-A2IO: 2-slot I/O base unit

• 1715-A4IO: 4-slot I/O base unit for higher capacity