Johnson Controls CSD-CF0J1-1 Current Switch

The Johnson Controls CSD-CF0J1-1 is a professional-grade split-core current switch engineered for rigorous HVAC motor status monitoring and load verification. Designed with a clamp-on current sensor architecture, this unit allows for non-intrusive installation without disconnecting existing power conductors, significantly reducing labor time on commercial HVAC maintenance jobs. Featuring a fixed setpoint threshold of 1.5A, the CSD-CF0J1-1 is optimized for under-current sensing, providing a reliable "go/no-go" signal to your Building Automation System (BAS) or controller. This solid-state current switch integrates a command relay with an SPST normally open output and a 20-30 VAC/VDC actuation coil, allowing technicians to verify motor operation while simultaneously facilitating start/stop control. With a N.O. relay output rated for up to 10A at 260 VAC, it easily handles standard pilot duty loads. The onboard Relay LED display provides immediate visual confirmation of the relay state, crucial for troubleshooting in dark mechanical rooms. Constructed to perform in demanding environments, it maintains accuracy across a 5 to 140?F temperature range and handles up to 95% non-condensing humidity with ease.

• Split-core housing allows for rapid retrofit installation without breaking the circuit or interrupting equipment uptime.
• Integrated command relay reduces the need for additional components by combining status sensing and motor control in one current sensing relay.
• Fixed 1.5A setpoint ensures consistent performance and eliminates the risk of field calibration errors in standardized motor applications.
• High isolation voltage of 600 VAC rms provides superior protection for low-voltage control circuits against high-voltage motor lines.
• Compact footprint and snap-in mounting bracket make it ideal for crowded electrical enclosures and tight starter panels.

Can the CSD-CF0J1-1 monitor motors pulling more than 200 Amps?
Standard operation supports up to 200A through the 0.71-inch aperture. For loads exceeding this, a 5A current transformer (CT) must be used to scale the signal down to the sensor's range.

Is this switch compatible with Variable Frequency Drives (VFDs)?
Yes, however, for VFD status monitoring, it should always be installed on the line side of the drive. Installing on the load side may result in inaccurate readings due to frequency fluctuations.

What does the Red LED indicate on this model?
The LED on the CSD-CF0J1-1 specifically monitors the status of the command relay coil. When the 24V signal is applied to the actuation coil, the LED illuminates to confirm the SPST relay has been energized.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.