Johnson Controls CSDSC-VFD1 VFD Auto Current Switch Split Core 1-135A NO 24VAC/DC

The Johnson Controls CSDSC-VFD1 is an automatic VFD current switch designed to monitor current flow in variable frequency drive systems and constant volume motors. This split-core device features automatic load detection, with the output closing when monitored current exceeds 70% full load amps and opening when current falls below 60% full load amps, enabling loss of load detection without calibration.

Key Features:

• Current monitoring range: 1-135 amperes
• Split-core design allows installation without disconnecting conductors
• Normally open (N.O.) output rated at 1.0A at 30 VAC/VDC
• 24VAC/DC coil voltage
• Split core design fits in tight enclosures
• Polarity insensitive output provides easier wiring
• LED indication of switch status allows easy verification of on/off status
• Powered by monitored load without requiring separate power supply

This current switch is ideal for HVAC building automation applications including fan and pump motor monitoring, providing reliable proof-of-flow detection in both VFD and constant volume motor systems. The split-core construction simplifies installation by allowing the switch to clamp directly onto the conductor without requiring wire disconnection.