11806814

Overview

The WERMA USA Inc. 11806814 is an internally driven magnetic electric buzzer designed for audible signaling applications. It operates on a rated voltage of 12 VDC with a current consumption of 20 mA and an inrush current below 500 mA. The device produces a continuous tone at a frequency of 2.4 kHz, achieving a sound pressure level of 90 dB when measured at a distance of 12V, 100cm. The unit features a circular design with a diameter of 43 mm and a height of approximately 48-49 mm. It utilizes a flat plug connection method and offers IP30 protection without the cap, or IP43 with the cap installed.

Feature Summary

• Internally driven magnetic mechanism for reliable continuous tone generation
• Low current consumption design to minimize operating costs
• Panel mount construction with flat plug connectivity
• Protective rating enhancement available via optional cap installation

Applications

• Industrial machine status indication
• Control panel alarm signaling
• Equipment fault detection systems
• Safety warning circuits

Procurement Notes

Verify that the specific application environment requires the IP43 rating if moisture or dust ingress is a concern, as this necessitates the use of the protective cap. Confirm that the mounting hole dimensions align with the 28mm mounting specification provided in the technical data. Ensure the control circuit can handle the <500mA inrush current during initial activation to prevent potential tripping of sensitive power supplies.

Selection Notes

Select this component when a compact, low-power audible indicator is required for 12V DC systems. The 90 dB output level is suitable for moderate noise environments. Consider the physical dimensions of 43mm diameter and ~49mm height to ensure adequate clearance within the enclosure. The flat plug connection simplifies wiring integration compared to soldered terminals.

Part Context

This part belongs to the Werma 118 Series of audible signaling devices. The series is characterized by modular components designed for industrial automation and control engineering. The 11806814 specifically represents the magnetic buzzer variant within this lineup, distinguished by its internal drive electronics and continuous tone capability, differentiating it from piezoelectric or siren variants in the same family.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Direct replacement should verify identical voltage (12VDC), current draw (20mA), and acoustic output (90dB) specifications.