Vemo V30-99-2255 Temperature Switch, radiator fan

Vemo V30-99-2255 Temperature Switch for Radiator Fan

The Vemo V30-99-2255 is a precision-engineered temperature switch designed to control the operation of a radiator fan in automotive cooling systems. It ensures optimal engine performance by activating the fan when coolant temperatures rise above a specified threshold and deactivating it once temperatures fall back within safe limits.

Key Functional Characteristics

• Temperature Activation Range: 85 °C to 80 °C (typical automotive range)
• Connection Type: M14x1.5 threaded socket with integrated sealing gasket for secure mounting and protection against coolant ingress.
• Polarity: Two‑pole switch, allowing straightforward integration into existing vehicle electrical circuits.
• Material Construction: High‑temperature resistant plastic housing combined with a robust metal contact assembly to withstand harsh automotive environments.
• Seal Quality: Built‑in gasket ensures leak‑free operation even under high pressure and temperature fluctuations.

Design Features & Engineering Excellence

The Vemo V30-99-2255 incorporates several design elements that make it a reliable component for modern vehicles:

• Compact Footprint: The switch’s small size allows installation in tight engine bay spaces without compromising airflow.
• Durable Contacts: Nickel‑plated contacts resist corrosion and maintain low resistance over extended service life.
• Temperature Sensing Element: A calibrated thermistor provides accurate temperature readings, triggering fan operation at precisely the right moment.
• Sealed Housing: The gasketed enclosure protects internal components from coolant, oil, and debris, extending component longevity.

Installation & Compatibility

The Vemo V30-99-2255 is engineered for seamless integration into a wide range of vehicle models. Its M14x1.5 thread size matches standard radiator fan mounting points found in many Mercedes‑Benz, BMW, Audi, and other European automotive platforms.

1. Mounting: Align the threaded socket with the existing fan bracket or dedicated mounting hole; tighten securely to ensure a leak‑free seal.
2. Electrical Connection: Connect the two terminals to the vehicle’s fan control circuit, respecting polarity. The switch will automatically open or close based on coolant temperature.
3. Testing: After installation, verify that the fan activates at the desired temperature threshold and shuts off when temperatures normalize.

Performance Benefits

• Engine Protection: By preventing overheating, the switch safeguards critical engine components from thermal stress.
• Fuel Efficiency: Timely fan activation reduces unnecessary power draw when cooling is not required, contributing to better fuel economy.
• Noise Reduction: The switch’s precise control limits fan operation to only when necessary, lowering cabin noise levels.
• Reliability: High‑quality materials and sealed construction ensure consistent performance across a wide temperature range.

Maintenance & Longevity

The Vemo V30-99-2255 is designed for minimal maintenance. Periodic visual inspections should confirm that the gasket remains intact and that no coolant has seeped into the housing. If a leak or malfunction is detected, replace the switch promptly to avoid engine damage.

Applications Across Vehicle Models

This temperature switch is compatible with numerous vehicle series, including but not limited to:

• MERCEDES‑BENZ models: E‑Class (W124), S‑Class (W163), SLK (R170), and various 190/123/124 series.
• BMW 3‑Series (E36/E46) and 5‑Series (E39/E60).
• AUDI A4/A6 (B5/B6) and Q7 models.
• Other European manufacturers that employ M14x1.5 fan mounting systems.

Technical Data Sheet Summary

Conclusion

The Vemo V30-99-2255 Temperature Switch for Radiator Fan exemplifies engineering precision and reliability. Its compact design, robust construction, and seamless compatibility with a broad spectrum of vehicle models make it an indispensable component for maintaining optimal engine cooling performance. Whether you are performing routine maintenance or upgrading your vehicle’s cooling system, this temperature switch delivers dependable operation that protects the heart of your automobile.