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ABB 3HAC4776-1/1 Product Overview

Dec 23, 2025 ABB

ABB 3HAC4776-1/1 is an industrial automation control module,which belongs to the ABB hard PLC series of products,specially designed for complex industrial systems.This module integrates digital input/output functions and supports logical instruction processing and multi-protocol communication.It is suitable for equipment condition monitoring,signal acquisition and control instruction execution in power,chemical industry,manufacturing and other fields.It has high reliability and anti-interference ability.

ABB 3HAC4776-1/1

Main features and advantages

Modular design:It adopts a compact modular structure,supports control room installation,can be quickly integrated into the existing automation system,and is adapted to standard rack deployment.

High reliability:built-in electromagnetic isolation relay output,support 24V DC/250V AC voltage range,contact mechanical life up to 10 million times,suitable for harsh industrial environments.

Anti-interference performance:Through photoelectric isolation technology(500V AC isolation)and shielding cable design,electromagnetic interference is effectively suppressed and the signal transmission is stable.

Multi-protocol compatibility:It supports MODBUS,TFT/LED display protocol and industrial Ethernet communication,and can work with ABB Advant ocs,MOD 300 and other systems.

Efficient data processing:the processing speed is 15Hz,the program capacity is 3MB,and the data capacity is 2MB,which meets the needs of real-time control and complex logical operations.

Technical specifications

Parameter specification value

Model ABB 3HAC4776-1/1

Series of hard PLC modules

Input channel 10-point digital input(PNP/NPN type)

Output channel 6-point relay output(24V DC/250V AC)

Operating voltage 220V AC

Processing speed 15Hz

Program capacity 3MB

Data capacity 2MB

Isolation voltage 500V AC(1 minute)

Ambient temperature-30°C to+70°C

Certification UL(some models)

Application field

Power system control:used for substation equipment state monitoring,circuit breaker action signal acquisition and control instruction output.

Chemical production monitoring:real-time collection of reactor temperature and pressure sensor signals,and linkage actuators to achieve process adjustment.

Manufacturing automation:cooperate with the robotic arm or conveyor belt system to carry out start-stop control and position feedback signal processing.

Data center management:monitor the operation status of equipment in precision air conditioning and UPS systems to ensure the stable operation of the computer room.

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