Spamel SPMO30B+C Varistor Surge Protection Module Type 1+2 Class B+C

The Spamel SPMO30B+C is a high-performance varistor-based surge protection module engineered to safeguard electrical installations from dangerous voltage spikes. Classified as Type 1+2 (Class B+C), this device offers a robust defense against both atmospheric overvoltages caused by lightning strikes and switching surges generated within the power grid. Its modular design allows for seamless integration into standard distribution boards, providing a reliable safety layer for residential, commercial, and industrial electrical systems.

Advantages

This surge protection module excels by combining two protection classes into a single compact unit, effectively managing high-energy surges while maintaining a low voltage protection level. The varistor technology ensures a rapid response time to transient overvoltages, preventing damage to sensitive electronic components and connected appliances. Its modular construction simplifies installation and maintenance, allowing for quick replacement of individual modules without requiring a complete system shutdown, which enhances the overall uptime and safety of the electrical infrastructure.

Suitable for

• Residential electrical distribution boards
• Industrial power supply systems
• Protection of sensitive electronic equipment
• Commercial building electrical installations
• Main switchboards in buildings with external lightning protection systems

This device may not be suitable for applications requiring protection against sustained overvoltages or direct lightning strikes to the main power line without additional upstream protection. It is also not intended for use in environments with extreme moisture or corrosive atmospheres unless housed in an appropriately rated protective enclosure.

Key specifications

• Protection type: Type 1+2 (Class B+C)
• Technology: Varistor-based
• Application: Electrical distribution boards
• Installation: Modular design
• Function: Surge and overvoltage protection

To install the module, ensure the power supply is disconnected and mount the device onto a standard DIN rail within the distribution board. Connect the phase, neutral, and protective earth conductors according to the wiring diagram provided by the manufacturer. Ensure that the connection cables are kept as short as possible to minimize inductive voltage drops during a surge event. Once installed, verify the status indicator to confirm the module is operational.

What to consider before purchase

• Compatibility with your existing electrical distribution board
• The presence of an external lightning protection system in the building
• Required space on the DIN rail
• Local electrical safety regulations and installation standards

Usage recommendations: Regularly inspect the status indicator on the module to ensure it remains in the operational state. If the indicator changes color or signals a fault, replace the module immediately to maintain continuous protection for your electrical system.