ABB TU848 3BSE042558R1 Module Termination Unit

Overview

The TU848 is a Module Termination Unit (MTU) designed for redundant applications using the TB840/TB840A Optical ModuleBus Modem. It enables robust, dual power supply and redundant I/O connections in critical control systems.

General Information

• Article Number: 3BSE042558R1

• Communication Protocol: ModuleBus

• Hot Swap: No

• Redundancy:

• Line Redundancy: Yes

• Module Redundancy: Yes

• Mounting: Vertical or Horizontal

• Power Input: 24 V DC (range: 19.2 – 30 V)

Detailed Technical Data

• ModuleBus Current Distribution:

• 5 V: Max 1.5 A

• 24 V: Max 1.5 A

• Power Dissipation: 2.5 W

• Mechanical Keys: 36 possible combinations

• Cluster Address Range: 1 to 7 (set via rotary switch)

• Connector: Not applicable

• Wiring Specifications:

• Solid Wires: 0.2 – 2.5 mm²

• Stranded Wires: 0.2 – 2.5 mm² (24 – 12 AWG)

• Recommended Torque: 0.5 Nm

• Insulation Voltage: 50 V

• Dielectric Test Voltage: 500 V AC

Environmental and Certifications

• Operating Temperature:

• Standard: 0 to +55 °C (32 to 131 °F)

• Certified: +5 to +55 °C

• Storage Temperature: -40 to +70 °C (-40 to 158 °F)

• Max Ambient Temp:

• Vertical Mounting: 40 °C (104 °F)

• Humidity: 5 to 95%, non-condensing

• Protection Class:

• Equipment Class I (IEC 60536)

• Ingress Protection: IP20 (IEC 60529)

• Standards Compliance:

• cULus Class 1 Zone 2

• ATEX Zone 2

• Electrical Safety: EN/UL 61010-1, 61010-2-201

• Hazardous Locations:

• Marine Certifications: ABS, BV, DNV-GL, LR

• RoHS: Directive 2011/65/EU (EN 50581:2012)

• WEEE: Directive 2012/19/EU

Mechanical Specifications

• Width: 124 mm (4.88 in.)

• Height: 186.5 mm (7.34 in., including latch)

• Depth: 47 mm (1.85 in.)

• Weight: 0.45 kg (0.99 lbs.)