ABB SACE S8D molded case circuit breaker

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1. Product Description

The ABB SACE S8D Molded Case Circuit Breaker (MCCB) is a high-performance low-voltage protective switch suitable for industrial, commercial, and infrastructure distribution systems. It protects circuits and equipment from overloads, short circuits, and undervoltage faults, ensuring safe and reliable operation of the electrical system. The S8D series features a compact design, easy installation, and a variety of rated currents and trip characteristics to meet diverse load and application requirements.

2. Technical Specifications

• Model: SACE S8D

• Type: Molded Case Circuit Breaker (MCCB)

• Rated Current Range: 6–125 A (optional)

• Poles: 1P, 2P, 3P, 3P+N

• Rated Voltage: AC 690 V / DC 250 V

• Short-circuit Breaking Capacity: 10 kA / 25 kA (depending on model)

• Overload Protection: Thermal-magnetic trip

• Operation: Manual / optional electric operation

• Accessory Options: Auxiliary contacts, alarm contacts, mechanical interlocks, remote operation modules

• Operating Temperature: -25 ℃ to +70 ℃

• Mounting: DIN rail or panel mount

• Protection Class: IP20 / IP40 (depending on installation)

• Standards Compliance: IEC 60947-2, UL 489, CE

3. Advantages and Key Features

• High-performance protection against overload, short circuit, and undervoltage to ensure electrical system and load safety.

• Compact modular design suitable for various distribution systems, saving space and facilitating maintenance and expansion.

• Wide range of accessories including auxiliary contacts, alarm contacts, and remote operation modules to enhance automation.

• Easy operation with manual or electric options, intuitive and safe.

• High reliability with industrial-grade construction, suitable for high temperature, humidity, and vibration environments.

4. Typical Applications

• Industrial plant power distribution

• Commercial buildings and infrastructure power systems

• Machinery power protection

• Motor Control Centers (MCC)

• Automation production lines and distribution panels

5. Precautions

• Disconnect power before installation or maintenance to ensure safety.

• Select rated current and trip characteristics according to load type and operating environment.

• Ensure proper ventilation during installation to prevent overheating.

• Regularly inspect contacts, terminal connections, and accessory modules to ensure reliable operation.

• Do not disassemble or modify the breaker body to maintain performance and safety.

The structure and details of the product：

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