01220.0-00-STGO

Overview

The Stego MFR012 (Part Number 01220.0-00) is a mechanical hygrostat designed for controlling electrical enclosures. It operates on AC 250 V with a maximum current of 5 A and a power rating of 20 W. The device features a snap-action contact mechanism and utilizes a bimetallic sensor element. It is mounted via a clip for 35 mm DIN rails, adhering to EN 60715 standards. The unit has an operating humidity range of 35% to 95% RH, with a switching differential of 7 K (±4 K tolerance). Physical dimensions are 25 x 13 x 13 mm, with a weight of 0.4 kg.

Feature Summary

• Mechanical bimetallic sensor element for reliable humidity detection
• Snap-action contact type ensuring precise switching
• Designed for 35 mm DIN rail mounting using standard clips

Applications

• Control cabinet humidity regulation
• Prevention of condensation in electrical enclosures
• Protection of electronic components against moisture damage

Procurement Notes

Verify the part number 01220.0-00 against official Stego documentation to confirm compatibility with existing DIN rail systems. Ensure the application voltage does not exceed AC 250 V. Confirm that the required humidity control range aligns with the 35-95% RH specification. Check for any specific environmental certifications required for your installation site.

Selection Notes

Select this component when a robust, maintenance-free mechanical solution is preferred over electronic controllers. It is suitable for applications requiring simple on/off control based on ambient humidity levels. Consider the 7 K switching differential when determining the precision needed for your enclosure environment. Ensure sufficient space for the 25 mm width and 13 mm depth dimensions.

Part Context

This model belongs to the Stego MFR series of mechanical hygrostats. These devices are engineered specifically for industrial control panels where condensation prevention is critical. The series offers various ratings, but this specific part focuses on standard AC voltage applications with a high cycle life exceeding 100,000 operations.

Replacement Considerations

Direct substitutes must match the 35 mm DIN rail mounting profile and AC 250 V / 5 A electrical ratings. Verify that the replacement also uses a bimetallic sensor and provides similar 35-95% RH sensitivity. Ensure the physical footprint allows for easy integration into existing panel layouts.