SC250

Overview

The SC250 is a piezoelectric industrial alarm indicator manufactured by Mallory Sonalert. It operates on a voltage range of 60 to 250 VAC or DC with a current rating typically between 5 and 18 mA. The device features a continuous tone at frequencies such as 2.9 kHz or 4.5 kHz, depending on the specific suffix variant. Sound pressure levels vary from approximately 62 dBA to 90 dBA based on the model configuration. It utilizes screw terminals for connection and is designed for panel mounting with dimensions of approximately 43 mm in diameter and 35 mm in height.

Feature Summary

• Piezoelectric transducer technology for reliable audio signaling
• Internal driver circuitry enabling direct AC/DC operation
• Robust housing suitable for industrial environments
• Panel mount installation with screw terminal connections

Applications

• Industrial machinery status indication
• Factory automation control panels
• Electrical equipment alarm systems
• Process monitoring stations

Procurement Notes

Verify the specific suffix code (e.g., HR, KR, NR) to confirm frequency, sound level, and tone type. Confirm voltage compatibility with the target system. Check RoHS compliance requirements against project specifications. Ensure panel cutout dimensions match the physical size of the selected variant before procurement.

Selection Notes

Select variants based on required decibel output and operating frequency. Higher voltage ratings may influence current draw. Consider environmental factors such as temperature range when choosing housing materials. Verify termination style matches existing wiring infrastructure. Consult datasheets for precise acoustic performance metrics at specific voltages.

Part Context

The SC250 belongs to the SC series of industrial alarms from Mallory Sonalert. This series is recognized for durable construction and consistent performance in demanding settings. The components are widely used in sectors requiring clear audible alerts. The product line emphasizes reliability and ease of integration into standard control panels.

Replacement Considerations

Direct replacements require matching voltage, frequency, and mounting dimensions. Variants within the SC250 family differ primarily in acoustic output and tone characteristics. Cross-referencing specific suffix codes is essential for functional equivalence.