SC628EPR

Overview

The SC628EPR is an internally driven piezoelectric buzzer manufactured by Mallory Sonalert Products Inc. Designed for audible indication and alert signaling, this component operates on a continuous tone at a frequency of 2.9 kHz. It supports a voltage rating of 28 VAC or 28 VDC with a current draw of 30 mA. The unit features screw terminals for connection and is configured for panel mounting. Its physical dimensions are 43 mm in diameter and 33 mm in height, producing a sound pressure level of 95 dBA.

Feature Summary

• Internally driven piezoelectric design for direct signal generation
• High-intensity acoustic output suitable for industrial environments
• Robust construction with screw terminal connectivity

Applications

• Equipment status indication
• Control panel alert signaling
• Industrial device alarms

Procurement Notes

Verify the specific suffix against official Mallory Sonalert documentation to confirm electrical characteristics and termination style. Ensure the selected variant matches the required voltage and mounting configuration for the target application. Cross-reference datasheets to validate compliance with necessary safety standards before integration.

Selection Notes

Select this model when a high-decibel, continuously sounding alarm is required for panel-mounted installations. The internal drive circuit simplifies integration by eliminating the need for external oscillators. Confirm that the 28V power supply aligns with system requirements and that the screw terminal interface fits the existing wiring infrastructure.

Part Context

The SC628 series represents a foundational line of industrial audio indicators from Mallory Sonalert, originating from patents acquired in the early 1960s. This series is widely recognized as a standard for panel alarms in various sectors. The SC628EPR specifically denotes a variant within this established family, characterized by its specific acoustic and electrical parameters.

Replacement Considerations

Consult official Mallory Sonalert substitution guides for verified equivalents. Generic replacements may not match the specific 95 dBA output or internal drive requirements.