ABB NTA105 terminal unit

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Product Overview

The ABB NTA105 Terminal Unit is a standardized interface module used in industrial automation control systems.
It provides a safe and reliable electrical connection between field signals and control systems, supporting analog and digital I/O signals, facilitating integration with PLCs, DCS, and other control devices.
Suitable for signal collection and termination in power, factory automation, process control, and distributed control systems (DCS).

Technical Specifications

Model: NTA105
Module Type: Terminal Unit
Signal Type: Analog / Digital (input or output depending on model)
Connection Method: Screw terminal / Plug-in terminal
Rated Voltage: 24 V DC (standard)
Rated Current: 2 A (per channel)
Insulation Voltage: 1500 V AC (between terminals)
Operating Temperature: 0°C to +60°C
Storage Temperature: -25°C to +70°C
Humidity: 5%–95%, non-condensing
Protection Rating: IP20
Mounting: DIN rail
Dimensions: approx. 110 × 22.5 × 100 mm
Weight: approx. 0.2 kg
Certifications: CE / UL / RoHS

Features & Advantages

1. Standardized Interface – Facilitates field signal connection and system compatibility.

2. Safe and Reliable – High insulation voltage ensures electrical isolation and system safety.

3. Modular Design – DIN rail mountable for easy maintenance and expansion.

4. Supports Multiple Signal Types – Handles analog and digital I/O signals.

5. Industrial-Grade Reliability – Suitable for long-term operation in industrial environments.

6. Easy Wiring – Screw or plug-in terminals simplify field wiring tasks.

Applications

• Industrial automation control systems

• PLC and DCS signal integration

• Power and energy management systems

• Factory process control and monitoring

• Distributed control systems (DCS)

• Automated production line and field instrument interfaces

Precautions

1. Disconnect power before installation or maintenance to ensure safety.

2. Ensure I/O signals match the terminal unit ratings to avoid overload.

3. Use shielded cables for analog or digital signals to reduce interference.

4. Avoid installation in high humidity, dusty, or strong EMI environments.

5. Regularly check terminal tightness and module condition.

6. Use genuine ABB NTA105 modules to ensure system compatibility and long-term reliable operation.

The structure and details of the product：

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