Surge protection module Simet SPDMM30B+C-275 — varistor protection module for Simtec class B+C (MPN 85201018)

Simet SPDMM30B+C-275 is a varistor-based surge protection module designed for Simtec class B+C installations. It is intended for use in electrical distribution and protection panels to limit transient overvoltages up to a nominal 275 V level. The module is suitable for integration into commercial and industrial power systems where protection against lightning-induced and switching surges is required.

Advantages

The varistor construction offers fast response to transient overvoltages and automatic clamping at the specified level, reducing stress on connected equipment. The module is engineered for compatibility with Simtec class B+C architectures and for straightforward mounting in distribution and protection panels. Designed for industrial and commercial environments, it supports reliable surge suppression without introducing complex maintenance procedures.

Suitable for

• Surge protection in commercial electrical distribution panels
• Industrial power systems subject to lightning or switching transients
• Integration into Simtec class B+C coordinated protection schemes
• Protecting sensitive control and automation equipment from overvoltage events

Key specifications

• Protection technology: metal-oxide varistor (MOV)
• Nominal clamping/operating level: 275 V rating for transient suppression
• Application class: coordinated for class B+C surge protection systems
• Installation type: module for electrical distribution and protection panels
• Typical environments: commercial and industrial electrical installations

How to use

Install the SPDMM30B+C-275 module in the designated slot or mounting location within a compatible distribution or protection panel, following local electrical codes and the panel manufacturer’s instructions. Ensure correct electrical connections to the incoming supply and to downstream protective devices to maintain coordinated protection. After installation, verify continuity and proper grounding of the panel to ensure effective surge diversion to earth. Periodically inspect the module as part of routine maintenance and replace it if signs of damage or end-of-life indicators are present.

Usage recommendations

Use the module as part of a coordinated Simtec class B+C protection scheme, ensuring upstream and downstream devices are appropriately selected for system voltage and fault current levels. Maintain proper earthing and follow local standards for surge protection device placement and replacement intervals.