1756-OB8 ControlLogix Output Module | 8-Channel 24V DC

Allen-Bradley 1756-OB8: 8-Channel Industrial Workhorse for Demanding Automation

Technical Specifications

• Model: 1756-OB8 | Series: ControlLogix
• Output Type: DC Sourcing | Brand: Allen-Bradley
• Voltage Range: 10-30V DC (Nominal 24V)
• Current Capacity: 2A/point | 8A/module @60°C
• Response Time: 1ms ON | 2ms OFF
• Terminal Blocks: 1756-TBNH or 1756-TBSH
• Power Efficiency: 2.5W max dissipation
• Temp Range: -40°C to 85°C (storage)
• Isolation: 250V continuous protection

Industrial Advantages

• ✅ Group-configurable outputs (2 groups of 4)
• 📈 30% wider voltage tolerance than standard
• 🛡️ Short-circuit protected outputs
• 🔧 Tool-free terminal replacement
• ⏱️ Ultra-fast switching (1ms response)

Quick Installation

• Step 1: Slide into ControlLogix chassis
• Step 2: Lock terminal block (TBNH/TBSH)
• Step 3: Connect loads to 20-pin RTB
• Step 4: Configure in Studio 5000 software

Reliability Package

• 📦 Worldwide delivery: FedEx/UPS/DHL (express options)
• 🔒 12-month performance warranty
• 🧊 ESD-safe packaging
• ⚠️ Overload protection circuitry

Expert FAQs

• Q: Minimum load requirement?
  A: 2mA per channel required
• Q: Supports AC loads?
  A: Only with external relay interface
• Q: Hot-swappable?
  A: Yes – in compatible systems
• Q: Surge current capacity?
  A: 4A for 10ms every second
• Q: Chassis slot restrictions?
  A: Cannot occupy left-most slot

Compare Similar Modules

Other ControlLogix solutions:
1756-IF16H (Analog Input) |
1756-IB16D (Diagnostic Input)

Download Installation Guide

Full wiring diagrams and specs:
1756-OB8 Technical Manual (PDF)