ABB|TU849|Redundant Module Termination Unit

ABB TU849 3BSE042560R1 Redundant Module Termination Unit

Description
ABB TU849 is a redundant module termination unit designed for use with TB840/TB840A optical modems in non-redundant I/O systems with dual power supply support.

Features

• Supports dual power supply for increased reliability
• Rotary switch for cluster address setting (1–7)
• Mechanical keying with 36 configuration options
• Single ModuleBus connection for system integration
• Latching DIN rail mount for secure grounding

Technical Specifications

• Type: Module Termination Unit (MTU)
• Function: Non-redundant I/O with redundant TB840/TB840A modules
• Power Input: Dual 24 V DC (19.2–30 V)
• ModuleBus Distribution: Max 5 V / 1.5 A, 24 V / 1.5 A
• Wire Size Compatibility:
  • Solid: 0.2–2.5 mm²
  • Stranded: 0.2–2.5 mm² (24–12 AWG)
• Torque Requirement: 0.5 Nm
• Insulation Voltage: 50 V rated
• Dielectric Test Voltage: 500 V AC
• Power Dissipation: 2.5 W
• Operating Temperature: 0 to +55 °C
• Storage Temperature: -40 to +70 °C
• Humidity: 5–95% non-condensing
• Certifications: CE, UL, cULus, ATEX, ABS, BV, DNV-GL, LR
• Protection Class: IP20
• RoHS Compliant: Yes
• Dimensions:
  • Width: 124 mm
  • Height: 186.5 mm (with latch)
  • Depth: 47 mm
• Weight: 0.45 kg