ABB TU850 3BSE050930R1 Extended Module Termination Unit

Overview

The ABB TU850 Extended Module Termination Unit (MTU) is designed for seamless integration with the S800 I/O system. Supporting up to 16 channels, this 50 V-rated MTU offers robust connectivity for field wiring to I/O modules while ensuring reliable signal and power distribution. Featuring mechanical keying, current-limited sensor power outlets, and a modular design, the TU850 enhances system efficiency and safety in industrial applications.

Technical Specifications

• Brand/Model: ABB TU850
• Channels: 16 channels, each supporting 15mA (digital input) or 25mA per two channels (analog input).
• Sensor Power Outlets: 16 current-limited outlets with PTC fuse protection.
• Process Connections: Up to 40, with D-sub connectors (25-pin male).
• Voltage Ratings: Rated insulation voltage of 50 V; dielectric test voltage of 500 V AC.
• Maximum Current: 2 A per process voltage connection; 1.5 A for ModuleBus (5 V/24 V).
• Mechanical Keys: 36 combinations for configuration flexibility.
• Dimensions: Width 126 mm, Depth 64 mm, Height 110 mm.
• Weight: 0.26 kg (0.57 lbs).
• Wire Compatibility: Solid wires (0.2–4 mm²), stranded wires (0.2–2.5 mm²).
• Protection Class: Class I, IP20-rated.

FAQs

Q1: What is the primary use of the 3BSE050930R1 MTU?
A: It connects field wiring to I/O modules and distributes ModuleBus signals and power.

Q2: Is the 3BSE050930R1 compatible with all ABB S800 I/O modules?
A: Yes, provided mechanical keying matches the module’s requirements.

Q3: What is the maximum rated current for digital and analog inputs?
A: Digital inputs support 15 mA per channel, while analog inputs support 25 mA per two channels.

For more detailed information, please check official datasheet: S800_I_O_Modules_and_Termination_Units