SC250JR

Overview

The Mallory Sonalert SC250JR is an industrial-grade piezoelectric buzzer designed for high-voltage applications. It operates within a voltage range of 60 to 250 VAC or VDC, drawing a current of 13 mA. The device produces a medium-intensity sound pressure level of 78 dBA at a frequency of 2.9 kHz. Its acoustic output follows a slow pulse tone pattern. Physically, the unit measures 43 mm in diameter and 1.69 inches in height, weighing 45 grams. It utilizes screw terminals for connection and supports panel mounting configurations.

Feature Summary

• Piezoelectric construction for reliable audio indication
• High-voltage operational capability up to 250 VAC/VDC
• Slow pulse acoustic signaling pattern
• Screw terminal interface for secure electrical connection

Applications

• Industrial automation control panels
• High-voltage equipment status indication
• Safety alarm systems requiring distinct pulse tones
• Heavy machinery operator interfaces

Procurement Notes

Verify that the specific order matches the SC250JR designation to ensure correct voltage ratings and pulse characteristics. Confirm that the application environment supports the specified 78 dBA sound pressure level and 2.9 kHz frequency. Ensure installation methods align with the panel mount style and screw terminal requirements documented in the official datasheet.

Selection Notes

Select this component when high-voltage operation between 60 and 250 V is required without external drivers. The piezoelectric type offers efficiency compared to electromagnetic alternatives. Consider the 43 mm diameter and panel mount style for enclosure integration. The slow pulse feature distinguishes it from continuous tone indicators, aiding in specific alert identification.

Part Context

This part belongs to the SC series of industrial audio indicators by Mallory Sonalert. These devices are engineered for durability in demanding environments. The SC series typically features robust piezoelectric elements and standardized mounting dimensions. This specific model emphasizes high-voltage compatibility and distinct pulsing signals for critical industrial notifications.

Replacement Considerations

Consult official Mallory Sonalert documentation for verified substitute part numbers. Cross-reference voltage ratings, current draw, and acoustic specifications to ensure functional equivalence. Verify physical dimensions and terminal types match existing panel cutouts and wiring configurations before substitution.