ABB TU851 Extended MTU 3BSE068782R1

Overview

The ABB TU851 is a versatile 16-channel 250 V extended module termination unit (MTU) designed for S800 I/O systems. It facilitates efficient field wiring connections to I/O modules and ensures reliable operation with robust mechanical features such as module locking, keying configurations, and DIN rail mounting.

Features

• Designed for 250 V applications; compatible with DI820, DI821, DI825, DI828, DO820, DO821, and DO828 modules.
• Supports up to 16 isolated I/O channels, ensuring secure signal connections.
• Equipped with mechanical keying for precise I/O module compatibility.
• Integrated ModuleBus connections for seamless I/O module communication.
• DIN rail mounting with latching for grounding and stability.
• Configurable mechanical locking mechanism to secure modules and enable operation.

Technical Specifications

• Brand/Model: ABB TU851
• Maximum Rated Voltage: 250 V
• Rated Current per I/O Channel: 3 A
• Maximum ModuleBus Current Distribution: 5 V (1.5 A), 24 V (1.5 A)
• Insulation Voltage: 250 V
• Dielectric Test Voltage: 2000 V a.c.
• Wire Size Compatibility: Solid (0.2–4 mm²), Stranded (0.2–4 mm²), AWG 24–10
• Equipment Class: Class II (Earth Protected) as per IEC 61140
• Protection Rating: IP20 (IEC 60529)
• Dimensions: Width 126 mm (5”), Depth 64 mm (2.52”), Height 110 mm (4.3”)
• Weight: 0.22 kg (0.48 lbs)
• Mechanical Keying Configurations: 36 combinations
• Application: Suitable for industrial automation and control systems requiring extended voltage and current handling.

Applications

The TU851 MTU is widely used in:

• Industrial automation for seamless field wiring integration.
• High-voltage environments requiring secure and isolated connections.
• Modular I/O systems to enhance flexibility and scalability.
• Control systems requiring robust communication via ModuleBus.

FAQ

Q1: What types of I/O modules are compatible with 3BSE068782R1?
A: It works with ABB DI820, DI821, DI825, DI828, DO820, DO821, and DO828 modules.

Q2: How many channels can the 3BSE068782R1 handle?
A: It supports up to 16 isolated I/O channels.

Q3: Can 3BSE068782R1 be mounted on standard DIN rails?
A: Yes, it features a secure latch for easy DIN rail mounting.

Q4: What is the significance of the model’s suffix?
A: The suffix defines the specific version or configuration details of the TU851 MTU.

Q5: What protection rating does the 3BSE068782R1 offer?
A: It has an IP20 protection rating according to IEC 60529 standards.

For more detailed information, please check official datasheet: S800_I_O_Modules_and_Termination_Units