Surge protection device replacement module Type 2 (class C) - DC (middle) MOD. SM T2 DC 500/20 M 002440731

Electrical installation protection with a replaceable surge limiter module

This type 2 (class C) replaceable surge limiter module is a key element in protecting electrical installations from the effects of surges, both in AC and DC networks. Designed for base mounting, it occupies only one module in the distribution board, making it easy to integrate into an existing system. Its task is to protect against transient overvoltages that can occur as a result of lightning strikes or rapid voltage changes in the network.

This module is particularly important in photovoltaic installations, where the risk of surges is higher due to the direct connection to the external network. Thanks to its design for DC systems, it provides effective protection for components sensitive to surges, such as inverters and solar panels.

Characteristics and application

This limiter is characterized by high operating efficiency – the rated discharge current to peak value is 20 kA, and the maximum discharge current reaches as much as 65 kA. Short-circuit strength at 30 kA guarantees its reliability in the event of a short circuit in the installation. Optical signaling informs about the operation of the device, allowing for quick identification and replacement of the damaged module. The rated DC voltage is 450V, and the maximum continuous operating DC voltage is 500V.

The application of this limiter is wide – it will be perfect both in residential, commercial and industrial installations. It is particularly important in places exposed to frequent storms or with sensitive electronics. Base mounting makes it easy to replace a damaged element without the need to interfere with the entire distribution board – which translates into saving time and service costs.

Key features and benefits

• Compact size: Occupies only 1 module, making it easy to install even in crowded distribution boards.
• High efficiency: Rated discharge current of 20 kA and maximum of 65 kA provide effective protection against surges.
• Optical signaling: Allows quick identification of a damaged module and the need for replacement.
• For DC use: Ideal for use in photovoltaic installations and other direct current systems.
• Durability: Short-circuit strength of 30 kA guarantees reliable operation in difficult conditions.
• Easy replacement: Modular design allows for quick replacement of a damaged element without the need to disassemble the entire distribution board – saving time and costs for the installer and end user.
• IP20 protection class: Provides basic protection against accidental contact and against the ingress of solid objects into the device.