Schneider Electric 8739-SCA54 Breaker Control Box

Schneider Electric 8739-SCA54 Breaker Control Box is a Form S, Size 1 enclosure in the Square D 8739 family, designed to house a breaker control assembly for remote or local circuit control. This unit is rated for 120 V, 60 Hz control power and is intended to integrate with 8739-series breakers in compact motor and equipment circuits, aligning with Schneider Electric’s NEMA breaker-control offerings. Form S denotes separate control hardware, allowing the control circuit to be installed and wired independently from the power circuit, a common arrangement in industrial control panels. The 8739-SCA54 designation identifies the exact Form S configuration and Size 1, ensuring compatibility with other 8739-series components within standard panel assemblies for reliable, integrated protection and control. In typical commercial and light industrial applications, this breaker control box serves as a compact interface to protect and coordinate circuit control in panels that require 120 V control power and 60 Hz service.