SC250K

Overview

The SC250K is a piezoelectric buzzer from the Mallory Sonalert SC series, designed for panel mounting. It operates on AC or DC voltages ranging from 60V to 250V with a current draw of 5mA to 18mA. The device emits a short pulse tone at a frequency of 2.9kHz, achieving a sound pressure level of 68dB at 60V measured from 61cm. It features internal drive circuitry and connects via screw terminals or quick-connect tabs (0.250 inches). The unit has a diameter of 42.85mm and operates within a temperature range of -30°C to 65°C.

Feature Summary

• Internal drive circuitry allows direct connection to AC or DC power sources without external oscillators.
• Piezoelectric technology provides reliable audio indication in industrial environments.
• Versatile terminal options include both screw terminals and quick-connect tabs for flexible wiring.

Applications

• Industrial machinery status indicators
• Control panel alarm systems
• Equipment fault signaling

Procurement Notes

Verify the specific suffix code against official Mallory Sonalert documentation to confirm acoustic characteristics. Suffixes such as 'R', 'JR', or 'HR' denote distinct pulse patterns and frequencies. Ensure the selected variant matches the required operational voltage and mounting configuration for the target application.

Selection Notes

Select this component when a high-voltage, self-contained audible indicator is required. The SC250K is suitable for applications needing immediate activation upon power application. Confirm that the operating environment stays within the specified temperature limits and that the mounting hole dimensions align with the 42.85mm diameter specification.

Part Context

This part belongs to the SC series of industrial alarms manufactured by Mallory Sonalert Products Inc. The series is characterized by robust piezoelectric construction and compatibility with standard industrial control voltages. These devices are widely used for visual-audible alerts in heavy machinery and automated systems.

Replacement Considerations

Substitutes must match the 60-250V input range and 2.9kHz frequency. Verify physical dimensions for panel cutout compatibility. Check if alternative models offer identical terminal types and mounting styles to ensure seamless integration into existing assemblies.