SCL028LD3SP1B

Alarms, Buzzers, And Sirens Overview

The SCL028LD3SP1B is a piezoelectric buzzer and indicator from the SCE series by Mallory Sonalert Products Inc. It operates on DC input with a voltage rating of 16 to 28 VDC. The device features an internal driver circuit and produces a slow pulse sound mode at a frequency of 2900 ± 500 Hz. It delivers a loud sound pressure level of 85 dB(A) at 2 feet when driven at 6 VDC, with a maximum current draw of 40 mA. The unit is designed for panel mounting using a knurled nut, fitting a standard 30 mm hole, and utilizes terminal block connections.

Alarms, Buzzers, And Sirens Feature Summary

• Internal driver circuitry enables direct connection to DC power sources without external drivers.
• Slow pulse operation mode provides distinct auditory signaling for industrial alerts.
• Robust construction supports operation in environments requiring NEMA 3R, 4X, and 12 protection ratings.

Alarms, Buzzers, And Sirens Applications

• Industrial control panels requiring audible status indicators
• Automated machinery alarm systems
• Electrical distribution equipment monitoring

Alarms, Buzzers, And Sirens Procurement Notes

Verify that the supply voltage includes transient voltage surge suppression as specified in official documentation. Confirm compatibility with required NEMA enclosure ratings (3R, 4X, or 12) and ensure the mounting hole size matches the recommended 30 mm specification. Check for cUL and UL recognition requirements specific to the installation region.

Alarms, Buzzers, And Sirens Selection Notes

Select this model for applications requiring low current consumption combined with high sound output levels. Compare against the SCE028LD3SP1B if higher current tolerance or different voltage ranges are needed. Ensure the slow pulse frequency aligns with regulatory or operational signaling standards for the target environment.

Alarms, Buzzers, And Sirens Part Context

This component belongs to the SCE series of industrial audio indicators. It shares the same physical form factor and mounting specifications as other SCE models but differs in electrical characteristics such as voltage range and drive current. The series is designed for harsh industrial environments with wide operating temperature ranges.

Alarms, Buzzers, And Sirens Replacement Considerations

SCE028LD3SP1B is a related variant within the same series offering similar functionality with potentially different electrical tolerances. Verify pinout and mounting dimensions before substitution.