ABB 240/415 0.5A 1 Pole Circuit Breaker S281UC Z0.5A

ABB S281UC-Z0.5A 1-Pole Circuit Breaker

The ABB S281UC-Z0.5A is a high-performance miniature circuit breaker (MCB) designed for precise protection in direct current (DC) applications. With a rated current of 0.5 amperes and a single-pole configuration, this MCB ensures reliable safeguarding of electrical circuits against overloads and short circuits.

Key Features

• Rated Current: 0.5 A
• Number of Poles: 1
• Tripping Characteristic: Z-curve, providing maximum protection with a very low short circuit trip setting, ideal for sensitive applications such as semiconductors and control circuits.
• Rated Operational Voltage: Up to 220 V DC for single-pole configurations.
• Breaking Capacity: 6 kA at 230/400 V AC, ensuring robust performance under fault conditions.
• Compliance: Meets international standards including IEC/EN 60947-2, UL 1077, and CSA 22.2 No. 235, making it suitable for commercial and industrial applications.
• Mounting: Designed for DIN rail mounting (TH35-7.5 and TH35-15) in accordance with IEC 60715 standards.
• Operating Temperature Range: -25°C to +55°C, ensuring reliable operation in various environmental conditions.

Applications

The S281UC-Z0.5A is particularly suited for DC applications requiring precise protection, such as photovoltaic systems, telecommunications, traction, and industrial control circuits. Its Z-curve tripping characteristic makes it ideal for protecting sensitive electronic components by providing rapid response to short circuit conditions.

Dimensions and Weight

• Width: 17.5 mm
• Depth: 69.0 mm
• Height: 90.0 mm
• Weight: 0.130 kg

These compact dimensions facilitate easy integration into various panel designs without compromising space.

Installation and Safety

The S281UC-Z0.5A features screw terminals compatible with a range of conductor sizes, ensuring secure and reliable connections. It offers a degree of protection rated at IP20, with the potential to achieve IP40 when installed in an enclosure with a cover. The device includes clear ON/OFF indicators for straightforward status identification.

For optimal performance and safety, it is essential to adhere to the specified polarity and current direction during installation, as indicated on the device.

In summary, the ABB S281UC-Z0.5A 1-Pole Circuit Breaker combines precision, reliability, and compliance with international standards, making it an excellent choice for protecting sensitive DC circuits in various industrial and commercial applications.