Surge protective device type 1+2 (class B+C) SPBT12-280/3 158330

Surge protection for electrical installations

Surge arrester SPBT12-280/3 is a Class 1+2 (B+C) device designed to protect electrical installations from the effects of current surges caused by lightning strikes or other disturbances in the network. Mounted on a DIN TH-35 mm mounting rail, it is a key element of the surge protection system, ensuring the safety of devices and installations. Its varistor-based design guarantees effective protection, and the ability to replace cartridges increases its functionality and lifespan.

Characteristics and application

This three-pole arrester, with a size of 3 modules, is designed to work with TN, TN-C, TN-C-S, TT and other network systems. Its task is to minimize the risk of damage caused by overvoltages, protecting both end receivers and the installation itself. The protection level of 1.5 kV provides a high degree of safety. Optical signaling informs about the possible operation of the device. The maximum wire cross-section of up to 25 mm² (solid/stranded) and 35 mm² (flexible) allows its use in various types of installations.

Key features and benefits

• Versatility: Compatible with various network systems (TN, TN-C, TN-S, TT, TN-C-S and others).
• High efficiency: Surge current of 12.5 kA per pole provides effective protection against strong overvoltages.
• Energy absorption: Specific energy at 39.1 kJ/Ohm allows for absorbing a large amount of energy during a surge.
• Replaceable cartridges: Enables quick and easy replacement of damaged elements, minimizing system downtime.
• Safety: Overload protection up to 160 A (using an appropriate fuse) further protects the installation.
• Mounting: Simple mounting on a standard DIN TH-35 mm rail facilitates installation and integration with existing electrical infrastructure.
• Durability: Made of high-quality materials ensures long-lasting and reliable operation of the device.
• Optical signaling: Allows for quick identification of the device status and any protection activation.

The SPBT12-280/3 arrester is characterized by a surge current of 12.5 kA, a protection level of 1.5 kV and the possibility of connecting wires with a cross-section of up to 25 mm² (solid/stranded) or 35 mm² (flexible). Its specific energy is 39.1 kJ/Ohm, which ensures effective protection against overvoltages in various operating conditions.

The SPBT12-280/3 arrester is a solid solution for installers looking for reliable surge protection and for end-users who value the safety of their electrical devices. Its versatility and ease of installation make it an ideal choice for both new installations and modernization of existing surge protection systems.