Allen-Bradley 1746-IO8 SLC 500 Combination Input and Output Module

SKU 1746-IO8

In stock

12-month warranty
Free returns within 30 days

Manufacturer: Allen-Bradley
Product No.: 1746-IO8
Country of origin:United States
Product Type: Combination Input and Output Module
Payment: T/T, Western Union
Weight: 380g
Dimensions: 11.8 x 3.5 x 14.5 cm
Shipping port: Xiamen
Warranty: 12 months

Description

The Allen-Bradley 1746-IO8 is a fixed-density digital combination input and output module engineered specifically for the SLC 500 modular controller platform. This mixed I/O module houses 4 discrete AC input channels and 4 relay contact output channels within a single chassis slot, providing a versatile interface for hybrid machine control applications that require both sensor monitoring and actuator switching.

Designed to integrate directly into the SLC 500 rack backplane, the 1746-IO8 handles 120VAC logic level input signals while providing flexible relay output switching capabilities up to 265VAC or 125VDC. Front-panel LED status indicators offer immediate visual feedback for each I/O point, allowing maintenance personnel to quickly diagnose field wiring and signal states during system operation.

Features

Combined I/O density featuring 4 AC input channels and 4 relay contact output channels in a single slot
Input voltage category of 120VAC with an operating range of 85 to 132VAC at 47 to 63Hz
Relay contact outputs supporting up to 265VAC or 125VDC for flexible load switching
Self-lifting pressure plate terminal blocks accommodating up to two 14 AWG wires per terminal
Front-panel status indicators providing clear per-point LED visibility for diagnostic troubleshooting
Direct backplane power distribution requiring 60mA at 5VDC and 45mA at 24VDC

Applications

Discrete sensor signal acquisition and low-capacity actuator control in compact SLC 500 automation panels
Mixed-signal machine automation requiring galvanic isolation between control logic and field loads
Retrofit and expansion of legacy Allen-Bradley SLC 500 control systems
Process skids and material handling equipment requiring combined AC sensing and relay switching

Technical Specifications

Parameter	Specification
Brand	Allen-Bradley
Product Type	Combination Input and Output Module
Series	SLC 500
Catalog Number	1746-IO8
Inputs	4 AC Inputs
Outputs	4 Relay Outputs
Input Voltage Range	85 to 132VAC, 47 to 63Hz
Output Voltage Range	5 to 265VAC, 47 to 63Hz / 5 to 125VDC
Backplane Current Draw	60mA @ 5VDC; 45mA @ 24VDC
Thermal Dissipation	0.27W per input, 0.133W per output
Wiring Terminal Type	Self-lifting pressure plates (accepts two 14 AWG wires)
Country of Origin	United States

Compliance and Certifications

UL Listed Industrial Control Equipment
CE Compliant for applicable European directives
cUL-us Certified for Canadian and US hazardous and non-hazardous locations

FAQ

How many inputs and outputs does the Allen-Bradley 1746-IO8 provide?

The 1746-IO8 is a combination module featuring 4 discrete AC input channels and 4 relay contact output channels.

What is the operating voltage range for the inputs on the 1746-IO8?

The input operating voltage range is 85 to 132VAC at 47 to 63Hz, designed for standard 120VAC logic systems.

What types of loads can the relay outputs switch?

The relay contact outputs are rated to switch AC voltages from 5 to 265VAC at 47 to 63Hz or DC voltages from 5 to 125VDC.

How much backplane current does the 1746-IO8 draw from the SLC 500 rack?

The module draws 60mA from the 5VDC backplane rail and 45mA from the 24VDC backplane rail.

What wire size is supported by the terminal blocks on this module?

The terminals feature self-lifting pressure plates that accept up to two 14 AWG wires per connection point.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

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Shipping & Returns

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Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

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Quantity

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin