Description
Johnson Controls CSDSC-S75050L Self-Calibrating Solid-State Current Switch
The Johnson Controls CSDSC-S75050L is a self-calibrating, solid-state current switch engineered for dependable proof-of-operation monitoring in commercial and industrial HVAC systems. Designed to detect the presence or absence of current flow in motors, fans, pumps, compressors, and other electrical loads, this current switch provides a reliable output signal to building automation systems (BAS) and control panels without the need for manual set-point adjustment.
Self-Calibrating Technology
The CSDSC-S75050L features automatic self-calibration, eliminating the guesswork and time-consuming manual adjustments associated with traditional current switches. Upon installation, the device learns the load’s normal operating current and sets its own trip threshold accordingly — reducing commissioning time and minimizing nuisance trips.
Solid-State Construction
Built with solid-state internal components, this current switch contains no mechanical contacts or moving parts. This design delivers superior reliability, extended service life, and consistent performance even in demanding HVAC environments subject to vibration, temperature fluctuations, and continuous duty cycles.
Key Features
- Self-calibrating design for fast, tool-free commissioning
- Solid-state construction for long service life and high reliability
- Proof-of-operation current sensing for motors, fans, pumps, and compressors
- Compatible with building automation and HVAC control systems
- No mechanical contacts — resistant to vibration and wear
- Johnson Controls quality engineering and manufacturing
Typical Applications
- HVAC air handling units (AHUs)
- Pump and fan motor status verification
- Building automation system (BAS) integration
- Commercial and industrial motor load monitoring
- Compressor proof-of-operation circuits
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