SC250J

Overview

The SC250J is a piezoelectric industrial alarm from the Mallory Sonalert SC series. It operates on AC or DC voltages ranging from 60V to 250V with a rated voltage of 250VAC/250VDC. The unit draws a current of 13 mA and produces a sound pressure level of 78 dBA at a frequency of 2.9 kHz. It features a slow pulse tone mode and utilizes screw terminals for connection. Designed for panel mounting, it measures 43 mm in diameter and 1.41 inches in height.

Feature Summary

• Piezoelectric construction for reliable audio indication
• Internal drive circuitry for direct AC/DC operation
• Slow pulse tone generation capability
• Screw terminal connections for secure installation

Applications

• Industrial machinery status alarms
• High-voltage equipment monitoring
• Panel-mounted safety indicators
• Factory automation control panels

Procurement Notes

Verify the specific suffix (e.g., JR, FJ) against the required voltage range and terminal type. Confirm that the 60-250V operating window matches the system supply. Ensure panel cutout dimensions accommodate the 43 mm diameter. Check RoHS compliance requirements if applicable to the deployment environment.

Selection Notes

Select this model when high-voltage AC or DC signaling is required without external drivers. The 2.9 kHz frequency provides distinct audibility. Compare current draw and SPL against other SC variants if volume or power consumption constraints exist. Verify that screw terminals are compatible with existing wiring harnesses.

Part Context

Part of the Mallory Sonalert SC series, designed for robust industrial environments. The series offers various voltage ratings and acoustic outputs. This component serves as a standalone audible alert device, eliminating the need for complex driver circuits for high-voltage applications.

Replacement Considerations

SC250JR: Similar specifications with confirmed availability data. SC250FJ: Offers quick-connect terminals instead of screws. SC250DJR: Higher sound pressure level variant.