Surge arrester T1+T2 MOV 2P TN-S/TT network Iimp=25kA In=50kA Up1.2kV contact SPA911

Protection of electrical installations and devices

The SPA911 surge protector is a key element ensuring the safety of electrical installations in residential and commercial buildings. The device protects against the effects of lightning strikes and switching surges, minimizing the risk of equipment damage and fires. This is particularly important in areas prone to frequent storms or with an unstable power grid.

This two-pole surge protector, designed for TN-S, TN-C-S and TT networks, effectively reduces the voltage to a safe level, protecting connected devices. Its mounting on a TH-35 mm DIN rail is simple and quick, which will be appreciated by both installers and people who independently care about the safety of their home.

Construction and application

The SPA911 surge protector belongs to protection class 1+2, which means it combines the functions of a type 1 surge protector (protection against direct lightning strikes) and a type 2 surge protector (protection against indirect surges). It uses MOV (Metal Oxide Varistor) technology, which ensures a fast response to sudden voltage increases. It has a signaling contact that optically informs about the operation of the device – which facilitates diagnostics and a quick response in the event of a failure.

The application of the SPA911 surge protector is wide:

• Home installations: protection of RTV, household appliances, computers and other sensitive electronic devices.
• Commercial buildings: protection of alarm systems, building automation, server rooms and other critical installations.
• Industrial facilities: protection of machines and production equipment against damage caused by surges.
• New installations: an integral part of the electrical installation project ensuring a high level of safety.
• Modernization of existing installations: improving the level of protection in older buildings.

Key features and benefits

• Versatility: compatible with various network systems (TN-S, TN-C-S, TT), which increases its versatility.
• High efficiency: impulse current 12.5 kA and follow current extinguishing capacity 50 kA guarantee effective protection against surges.
• Optical signaling: informs about the operation of the surge protector, making it easier to identify surge problems.
• Compact dimensions: occupies only 2 modules on a DIN rail, allowing you to save space in the distribution box.
• Safety of use: compliance with standards ensures a high level of safety for users and the electrical installation.
• Large wire cross-section: possibility of connecting wires with a cross-section of up to 35 mm², which allows for use in installations with a high load.
• Spark gap technology: provides reliable voltage switching during surges.

The SPA911 surge protector is an investment in the safety of your electrical installation and peace of mind – regardless of whether you are a professional installer or an end user!