CSDECM-ADJ3 Johnson Controls Current Switch

Overview

The Johnson Controls CSDECM-ADJ3 is an adjustable current switch designed for Electronically Commutated Motors (ECMs) and other electrical loads. It provides reliable go/no-go run detection by monitoring true operating current rather than voltage, preventing false readings caused by an ECM’s idle current. This switch features an adjustable threshold range of 0.25 A to 3 A and includes an integrated normally open (N.O.) command relay with a 12 VDC coil.

Features

• Designed specifically for Electronically Commutated Motors (ECMs) to avoid false status readings during idle cycles.
• Features an adjustable trip point range from 0.25 to 3 Amps via a single-turn dial.
• Built-in normally open (N.O.) command relay adds 10 A at 125 VAC of switching capability.
• Self-powered induced current design eliminates the need for an external sensor power supply.
• Split-core housing allows for simple installation on existing wiring without disconnecting cables.

Specifications

• Amperage Range: Adjustable from 0.25 A to 3 A setpoint, 200 A maximum operational continuous current.
• Status Output Rating: Solid-state FET, 1.0 A at 30 VAC/VDC.
• Relay Contact Rating: Normally Open (N.O.), 10 A at 125 VAC.
• Relay Coil Voltage: 12 VDC.
• Frequency Range: 50/60 Hz.
• Sensor Aperture: 0.75 in. (1.9 cm).
• Temperature Rating: 5°F to 140°F (-15°C to 60°C).
• Humidity Range: 0 to 95% non-condensing.
• Isolation Voltage: 600 VAC rms (UL listed), 300 VAC rms (CE compliant).

Applications

• Go/No-Go run detection and status monitoring for fractional and sub-fractional horsepower motors.
• Fan, pump, compressor, and blower status tracking in commercial HVAC systems.
• Automation integration within building management systems (BMS).
• Remote equipment verification and load loss detection.