B552-2

SCRs - Modules Overview

The B552-2 is a single-phase SCR module manufactured by Sensata-Crydom, designed for chassis mounting. It features an isolated barrier structure containing two SCRs. The device supports a maximum repetitive peak off-state voltage of 600V and handles a maximum RMS on-state current of 25A (DC). It withstands non-repetitive surge currents of 250A at 60Hz. The gate trigger current maximum is specified at 60mA.

SCRs - Modules Feature Summary

• Single-phase controller configuration with integrated isolation barriers
• Chassis mount installation for secure mechanical attachment
• Optimized for high surge current handling capabilities

SCRs - Modules Applications

• Industrial motor control systems
• Power regulation circuits
• Heating element control applications

SCRs - Modules Procurement Notes

Verify the specific datasheet version from Sensata-Crydom to confirm exact thermal resistance values and mounting torque specifications before integration. Ensure the application environment remains within the component's rated voltage and current limits to prevent failure. Cross-reference the package dimensions with the official mechanical drawing to guarantee compatibility with the intended chassis design.

SCRs - Modules Selection Notes

Select this module when a robust single-phase AC power control solution is required with high surge tolerance. The 600V rating suits standard industrial line voltages. Consider the 25A DC RMS limit for continuous load calculations. The isolated barrier design provides necessary safety separation in sensitive electronic environments compared to non-isolated alternatives.

SCRs - Modules Part Context

This component belongs to the broader category of silicon-controlled rectifier modules used in power electronics. Unlike solid-state relays which offer complete galvanic isolation via optocouplers, this SCR module provides direct phase control. It serves as a fundamental switching element in high-power AC applications where precise current regulation and durability under electrical stress are critical operational requirements.

SCRs - Modules Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and thermal characteristics if considering alternative manufacturers' single-phase SCR modules.