CSDECM-C35200L0 Johnson Controls Current Switch

Overview

The Johnson Controls CSDECM-C35200L0 is a split-core (clamp) fixed setpoint current switch device specifically designed for Electronically Commutated Motors (ECMs) and other electrical loads in building automation and commercial HVAC systems. It provides reliable verification of equipment operation by sensing current from the power conductor cable. Featuring a 0.35 A minimum turn-on threshold, it effectively eliminates false readings caused by an ECM’s idle current. It includes a built-in normally open (N.O.) relay option, removing the need for a separate external power supply.

Features

• Split-core (clamp) design enables simplified installation without disconnecting the monitored conductors.
• Monitored load architecture induces power directly from the conductor cable, eliminating the need for an external power supply.
• Fixed 0.35 A low turn-on current extends effective operation to sub-fractional horsepower motors.
• Integrated polarity-insensitive output provides easier wiring and safeguards configurations.
• Durable, compact enclosure allows for seamless installation inside tight electrical panels.

Specifications

• Core Type: Split-Core / Clamp
• Minimum Trip Setpoint: 0.35 A
• Maximum Current Capacity: 200 A
• Status Output Type: Normally Open (N.O.) switch
• Switch Load Capacity: 1.0 A at 30 VAC/VDC
• Relay Option: No relay integrated (Order code 0 variant)
• Frequency Range: 50/60 Hz
• Isolation Voltage: 600 VAC rms (UL listed), 300 VAC rms (CE compliant)
• Temperature Range: 5°F to 140°F (-15°C to 60°C)
• Humidity Range: 0 to 95% noncondensing
• Dimensions: 2.5 x 0.57 x 2.23 inches (63.5 x 14.5 x 56.6 mm)

Applications

• Verifying the operating status of Electronically Commutated Motors (ECMs) in commercial building spaces.
• Interfacing with Building Automation Systems (BAS) and Energy Management Systems for precise load monitoring.
• Monitoring auxiliary HVAC electrical loads such as exhaust fans, circulation pumps, and blower motors.
• Distinguishing accurately between true system run status and idle drawing states in energy management systems.