Allen-Bradley 1762-OB8 Ser A MicroLogix 8-Point Digital Output Module

Overview

The Allen-Bradley 1762-OB8 Ser A is an 8-channel digital output module for the MicroLogix series. It provides reliable DC output control with robust protection against environmental stresses and electrical noise. Designed for use in hazardous and standard industrial locations, this compact module ensures precise and safe signal switching.

Technical Specifications

• Manufacturer: Allen-Bradley

• Model Number: 1762-OB8

• Product Type: MicroLogix Digital Output Module

• Module Height x Width x Depth: 90 × 40 × 87 mm (overall height including mounting tabs: 110 mm)

• Shipping Weight: 210 g (0.46 lbs)

• Operating Temperature: 0–55°C (32–131°F)

• Storage Temperature: -40–85°C (-40–185°F)

• Operating Humidity: 5–95% non-condensing

• Maximum Operating Altitude: 2000 m (6561 ft)

• Hazardous Environment Rating: Class I, Division 2, Groups A-D; compliant with ISA/ANSI 12.12.01 and C-UL under CSA C22.2 No. 213

• Electrical Noise Immunity: Meets NEMA ICS 2-230, EN50081-2 Class A

• ESD Immunity (EN61000-4-2): 4 kV contact, 8 kV air, 4 kV indirect

• Radiated Immunity (EN61000-4-3): 10 V/m, 80–1000 MHz, 80% amplitude modulation

• Fast Transient Burst (EN61000-4-4): 2 kV, 5 kHz

• Surge Immunity (EN61000-4-5): 2 kV common mode, 1 kV differential mode

• Conducted Immunity (EN61000-4-6): 10 V, 0.15–80 MHz

Key Features

• 8 isolated digital outputs for MicroLogix series controllers

• Compact form factor with mounting tabs for easy installation

• Resistant to vibration, shock, and extreme temperatures

• Conforms to hazardous location safety standards

• Built-in immunity against ESD, surges, fast transients, and radiated noise

Application Scenarios

• Small to medium discrete control applications

• Switching DC loads such as relays, solenoids, and indicator devices

• Deployment in both standard and hazardous industrial zones

• Integration with MicroLogix controllers in control panels or cabinets

FAQ

Q1: How many outputs does the 1762-OB8 Ser A provide?
A1: The module provides 8 isolated digital outputs.

Q2: Can it operate in hazardous locations?
A2: Yes, it is certified for Class I, Division 2 environments, Groups A–D.

Q3: What protection does it have against electrical noise?
A3: It meets NEMA ICS 2-230, EN50081-2 Class A, and IEC 61000 series for ESD, surge, fast transient, and radiated immunity.