General
Model	Symbols
Colour	Red
Imprint/indication	Other
Transparent
With tangible imprint

The article 2145-12 from Busch Jaeger is a push-button symbol in red, specifically designed for insertion into levers with openings for symbols. It serves as a visual identification for switches and push-buttons in surface-mounted installations and is used in combination with various products from the Busch-Duro 2000® and Busch-balance® series. The red color enables clear visual differentiation, especially in systems where different functions are color-coded. The symbol is not transparent and does not feature tactile marking, making it primarily suitable for visual recognition.

Applications

The push-button symbol 2145-12 is used in electrical installations where clear and unambiguous identification of switches or push-buttons is required. It is intended for levers of type 2520-xxx, which are mounted in surface-mounted systems. Compatibility includes specifically the AP switches of the 2601/x SKxxx series and the AP push-buttons of the 2621xxx series. These products are part of the design lines Busch-balance® SI, Reflex SI, Busch-Duro 2000® SI, Busch-Duro 2000® AP, and Busch-Duro 2000® WDI. The use is in indoor and outdoor installations, particularly in areas where high visibility of functions is necessary, such as in industrial environments, building technology, or public facilities.

Functions and Equipment in Detail

The symbol is designed as a symbol element and serves exclusively for visual identification. It is not transparent, so the red color is clearly visible without being impaired by overlay with the background. The identification is achieved through color coding without additional tactile structures, meaning it is not suitable as a tactile symbol for visually impaired persons. The shape and size are designed to fit precisely into the designated openings of the levers 2520-xxx, ensuring a clean and uniform appearance of the installation.

Technology Explained Simply

The push-button symbol 2145-12 is an accessory part for surface-mounted systems, inserted into the lever to visually indicate the function of the switch or push-button located underneath. The red color serves as a visual signal, which may indicate, for example, a warning function, an emergency exit, or a specific switching function. Since it does not feature any tactile structure, it is intended exclusively for optical recognition. Its use in the mentioned design lines ensures stylistic consistency within the installation.

Compatibility and Accessories

The symbol is specifically developed for levers 2520-xxx, which are used in the design lines Busch-balance® SI, Reflex SI, Busch-Duro 2000® SI, Busch-Duro 2000® AP, and Busch-Duro 2000® WDI. It is compatible with AP switches 2601/x SKxxx and AP push-buttons 2621xxx. Use in the variants Reflex SI, Reflex SI Linear, Busch-Duro 2000® SI, and Busch-Duro 2000® SI Linear enables a uniform design of the switching surfaces. It is a pure identification element and does not perform any electrical function.

Installation and Mounting

Mounting is done by simply inserting the symbol into the designated opening of the lever 2520-xxx. No tools or additional mounting steps are required. The fit is designed so that the symbol sits securely in the lever and cannot be accidentally pulled out. Installation takes place after the lever has been installed in the surface-mounted socket or surface-mounted distributor panel. Positioning depends on the respective switching function and the overall design of the installation.

Operational Advantages

The clear red identification enables quick and unambiguous recognition of the function of the switch or push-button, especially in complex installations with multiple switching surfaces. Use in the mentioned design lines ensures visual harmony and supports the professional design of electrical installations. The symbol is robust and designed for use in surface-mounted systems, with materials meeting the requirements of the respective design lines. It requires no maintenance and remains visible and functional throughout its service life.