Surge Protective Device, Heating, Ventilating, Air Conditioning

MARS 83905 Surge Protective Device (SPD)

The MARS 83905 Surge Protective Device (SPD) is engineered to provide comprehensive transient voltage protection for HVAC equipment and control systems. Utilizing advanced TPMOV (Thermally Protected Metal Oxide Varistor) technology, the device safeguards critical electronic components from power surges, voltage spikes, and electrical transients. Designed for professional installation, the MARS SPD ensures long-term protection for compressors, control boards, sensors, and ECM motors in both residential and commercial systems.

Technical Specifications

• Manufacturer: MARS
• Model Number: 83905
• Product Type: Surge Protective Device (SPD)
• Protection Technology: Thermally Protected MOV (TPMOV)
• Application: Whole-unit protection for HVAC systems and controls
• Protected Equipment: Compressors, Heat Pumps, ECM Motors, Control Boards, and Sensors
• Voltage Protection: Designed to suppress high-energy transients and voltage surges
• Mounting: External Mount, Suitable for Field or Factory Installation
• Response Time: <1 nanosecond typical
• Enclosure Rating: Weather-resistant housing (outdoor rated)
• Indicator: Visual status indicator for operational condition
• Compliance: UL 1449 Listed, Type 1 or Type 2 SPD (application dependent)
• Operating Environment: Suitable for HVAC and refrigeration applications in residential, commercial, and light industrial installations

Performance and Application

The MARS 83905 SPD delivers continuous protection against electrical disturbances that can degrade or damage sensitive HVAC components. The integrated TPMOV design isolates fault conditions, eliminating the risk of catastrophic failure common with traditional MOV surge protectors. This device provides full system coverage by protecting both high-voltage and low-voltage circuits, extending service life of control electronics and reducing equipment downtime. Its compact configuration and external mounting design simplify installation and field service integration.

Summary

The MARS 83905 Surge Protective Device offers a robust, code-compliant solution for safeguarding HVAC systems against transient overvoltage events. Featuring TPMOV technology and full-system protection capability, it provides reliable defense for compressors, ECM motors, sensors, and control circuits across professional-grade installations.