Johnson Controls CSD-SA1E1-1 Current Switch

The Johnson Controls CSD-SA1E1-1 is a high-performance solid-core current switch designed for precision motor status monitoring and load validation in commercial HVAC control systems. This unit features an adjustable setpoint threshold, allowing technicians to fine-tune the sensing range for specific motor amperage draws, ensuring reliable over/under current sensing. Equipped with an integrated 24 V SPST normally open output relay and a 20-30 Vac/Vdc actuation coil, the CSD-SA1E1-1 simplifies installation by combining sensing and switching logic into a single device. The dual LED status indicators provide immediate visual feedback on relay position and current flow, which is essential for rapid troubleshooting in the field. Built to withstand demanding mechanical environments, it operates effectively within a 5-140 degree temperature range and up to 95% non-condensing humidity. This current switch is a pull-in replacement for monitoring fans, pumps, and blowers where a dry contact signal is required for the BAS (Building Automation System).

• Simplified Wiring: The integrated SPST NO relay reduces the need for an external pilot relay, saving space in the enclosure.
• Precise Calibration: The adjustable setpoint allows for accurate belt-loss detection and motor stall protection.
• Solid-Core Reliability: Provides a stable induction-powered monitoring solution with high amperage sensing accuracy.
• Visual Diagnostics: Dedicated LED status displays confirm both coil actuation and switch state for faster commissioning.

Can this switch handle both AC and DC actuation voltages?
Yes, the actuation coil is designed to operate on a 20-30 Vac/Vdc range, providing flexibility for different low voltage control circuits.

Is the output contact suitable for high-voltage loads?
The output is a normally open status switch typically used for signaling a controller or low-power pilot circuit; always verify the maximum contact rating against your mechanical specifications.

Does the solid-core design require a power supply for the current sensor?
The current sensing portion is induced directly from the monitored conductor, while the relay coil requires an external 24V source for operation.

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.