Allen-Bradley 1794-OW8/A: Rugged 8-Point Relay Output Module for Industrial Control

Key Features

• 🔌 8 isolated Form A relay outputs (NO contacts)
• ⚡ Handles up to 2A @ 240V AC or 30V DC
• 🛡️ 2500V isolation between outputs and Flexbus
• 📏 Compact 94×94×68mm DIN-rail design
• ⚙️ 100,000+ operations at rated load

Technical Specifications

• Electrical Ratings
  • Model: 1794-OW8/A
  • Max Voltage: 240V AC / 125V DC
  • Contact Resistance: <30mΩ
  • Response Time: ≤10ms ON/OFF
• Load Capabilities
  • Resistive: 2A @ 240V AC
  • Inductive: 2A @ 240V AC (PF=0.4)
  • Minimum Load: 100μA @ 100mV DC
  • Surge Rating: 3A slow-blow fuse protected
• Physical Details
  • Dimensions: 3.7×3.7×2.7 in (94×94×68mm)
  • Weight: 0.24kg (0.53lbs)
  • Terminal Torque: 7-9 lb-in (0.8-1.02Nm)
  • Mounting: DIN rail or panel

Industrial Advantages

• ✅ Explosive atmosphere rated - Zone 2 compliant
• ✅ High isolation - 2500V tested isolation
• ✅ Long life - 100,000+ operations
• ✅ Versatile power - AC/DC compatible
• ✅ Easy maintenance - Field-replaceable fuses

Installation & Support

• Works with 1794-TB2/TB3/TBNF terminal bases
• Hot-swappable module replacement
• Clear LED status indicators
• Global certifications (CE, UL, ATEX)

Shipping & Warranty

• Fast delivery via FedEx/UPS/DHL
• 12-month warranty
• Made in USA quality
• RoHS compliant

Expert FAQs

• What fuses are recommended? 3.0A, 250V AC slow-blow (Littelfuse 239003)
• Can contacts handle DC inductive loads? Yes, up to 30V DC @ 2A (L/R=7ms)
• Is group isolation provided? Yes, 2500V between relay groups
• What's the switching frequency? Max 1 operation every 3 seconds
• Can I mix AC and DC on different channels? Yes, each channel is isolated