ABB OESA630DF4PL1 OS series switch fuses Switchgear OS switch fuses

Here are the parameters of the ABB OESA630DF4PL1 OS series switch fuses in English:

Rated Voltage: It represents the maximum voltage under which the switch fuse can operate stably and safely. For example, it might be 400V AC or 690V AC, depending on the specific model and application requirements.

Rated Current: This is the maximum continuous current that the switch fuse is designed to carry. In the case of OESA630DF4PL1, the rated current is 630A. This value is crucial for determining the appropriate load that the switch fuse can handle without overheating or suffering from premature wear.

Breaking Capacity: It indicates the maximum short - circuit current that the switch fuse is capable of interrupting safely. Expressed in kilo - amperes (kA), typical values could be 50kA, 80kA, or even higher, depending on the design and intended use of the switch fuse. A higher breaking capacity is required for applications where there is a potential for large short - circuit currents.

Fuse Link Characteristics: This includes details about the fuse element itself, such as its material (usually a special alloy with specific melting characteristics), diameter, and length. These factors determine the fusing time - current characteristics of the fuse, which are critical for protecting the circuit from overcurrents. Different types of fuse links are available to suit various application needs, such as slow - blow fuses for applications with high inrush currents or fast - acting fuses for protecting sensitive electronic equipment.

Switching Characteristics: The switching speed of the switch fuse is an important parameter. It refers to the time it takes for the switch to open or close under normal and fault conditions. A fast - switching speed is desirable to minimize the duration of an overcurrent event and protect the connected equipment. Additionally, the contact resistance of the switch contacts is another important characteristic. Low contact resistance helps to reduce power losses and prevent overheating at the contact points during operation. The mechanical life of the switch contacts, which is the number of times the switch can be operated without significant degradation, is also a relevant parameter, especially for applications with frequent switching operations.

Insulation Resistance: This parameter measures the resistance between the conductive parts of the switch fuse and the ground or other non - conductive parts. It should be very high, typically in the order of mega - ohms (MΩ), to ensure reliable electrical insulation and prevent leakage currents. A high insulation resistance is essential for maintaining the safety and proper operation of the switch fuse, especially in high - voltage applications.

Degree of Protection: Indicated by the IP (Ingress Protection) code, it describes the level of protection provided by the enclosure of the switch fuse against the ingress of foreign objects and moisture. For example, IP54 provides protection against dust and splashing water, while IP65 offers a higher level of protection against dust - tight and water - jet - proof conditions. The appropriate degree of protection is selected based on the environmental conditions in which the switch fuse will be installed.