ABB Electrical S281-K4A Circuit Breaker

ABB Electrical S281-K4A Circuit Breaker

Basic Parameters

Rated voltage: suitable for AC 230V/400V circuit.

Rated current: 4A.

Short-circuit breaking capacity: rated short-circuit breaking capacity is 15kA at 230V and 15kA at 400V.

Dimensions and Weight: Width 0.018m, Height 0.090m, Depth 0.058m, Weight approx. 0.30 lbs.

Functional Features

Protection Features:

Overload protection: realised by an internal thermal release element. When the current in the circuit exceeds the rated current of 4A for a long time, the bimetal in the thermal release element will be bent and deformed due to heat, which will push the release mechanism to act, thus cutting off the circuit and effectively preventing the wiring and equipments from being damaged due to overload.

Short-circuit protection: Once a short-circuit fault occurs in the circuit, the instantaneous generation of a huge short-circuit current will cause the electromagnetic release device to act quickly, generating a strong electromagnetic force to attract the armature, drive the release mechanism to quickly cut off the circuit, limiting the impact of the fault to a minimum range, to protect the equipment and personnel safety.

Withdrawal characteristics: adopting K-type withdrawal characteristic curve, the response to fault current is more sensitive and precise, which can be better adapted to the protection needs of different types of loads, and effectively avoid the damage caused by overload or short circuit to the equipment.

Installation: DIN rail mounting, this installation method is simple and convenient, can be easily installed on the standard DIN rail, in the distribution cabinet and other electrical equipment for flexible layout, saving installation space and time, improve installation efficiency.

Fields of application

Industrial field: It can be used in factories for the distribution protection of various electrical equipment, such as small motors, control circuits, lighting systems and other branch circuit protection, to prevent equipment damage and production interruption due to circuit failure, to ensure the continuity and stability of the production process.

Commercial places: It is suitable for the power distribution protection of lighting systems, socket circuits, small air-conditioning systems in shopping malls, office buildings, hotels, etc., to ensure the reliability and safety of power supply and provide stable power support for commercial operations.

Residential: In the family electricity, it can protect all kinds of small electrical equipment and lighting lines, prevent overload or short-circuit caused by electrical fires and other safety accidents, and ensure the safety of residents' electricity consumption.

Learning objectives 

Upon completion of this course the participants will be able to: 

- Plan an appropriate architecture for a system 800xA with Advant Master 

- Install the AC450 Connect software 

- Navigate in the system and create new objects / aspects 

- Configure and maintain the communication between 800xA and Advant controllers 

- Configure and modify graphic displays, faceplates and graphic elements 

- Manage and configure alarm and events 

- Configure historical data collection and trends 

- Configure time synchronization 

- Create and customize a workplace 

- Configure user accounts and describe how access rights work 

- Save and restore data.