Isolated Relay Output Module 4 Channels

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Product Description

Product Attributes

Model No.: CT-2754

Packaging & Delivery

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Product Description

CT-2754 Relay Output Module 4 channels RC Flyback Diode Channel Isolated

When switching inductive loads like solenoid valves, contactors, or small motors, conventional relay modules often suffer from contact arcing, voltage spikes, or channel crosstalk—leading to premature failure.

The CT-2754 4-Channel Relay Output Module from Sichuan Odot Automation is engineered for robust, long-life switching control. It features four normally open (NO) relay outputs, each rated for 3A/30VDC (90W), capable of safely driving both resistive and inductive loads. Each channel integrates a built-in RC snubber circuit and flyback diode (FWD) to suppress back-EMF from inductive loads during turn-off, dramatically extending relay life and protecting downstream electronics. Full channel-to-channel isolation prevents interference, while an ultra-low on-resistance (≤100mΩ) minimizes heat generation and improves efficiency. Four dedicated LED indicators provide instant visual feedback for status monitoring and troubleshooting. Ideal for compact PLC cabinets, building automation, lab equipment, packaging machines, and agricultural systems, the CT-2754 delivers industrial-grade reliability.

As a high-robustness actuation component of the ODOT open automation platform, it combines built-in protection, strong isolation, and service-friendly design—ensuring stable, durable, and maintenance-efficient control in demanding applications.

Technical Parameters

General parameters
Power	Max.125mA @ 5.0Vdc
Isolation	I/O to internal bus isolation voltage: AC 500V Isolation voltage between channels AC 500V
Field Power	Not used
Wiring	I/O wiring ：Max.1.0mm2(AWG 17)
Mounting Type	35mmDIN-Rail
Size	1151475mm
Weight	65g
Environment Specification
Operational Temperature	-35~70℃
Operational Humidity	5%~95% RH(No Condensation)
Protection Class	IP20
Output Parameter
Channel Number	4 channel Relay normally on output
LED Indicator	4 channel output LED Indicator
Max. Switching Current	Resistive load：3A;Inductive load：2A
Max. Switching Voltage	30VDC
Max. Switching Power	90W
Switching Frequency	Resistive load：Max 2Hz;Inductive load：Max 0.5Hz
Contact Resistance	≤100mΩ
Output Delay	ON to OFF:Max.10msOFF to ON:Max.10ms
Mechanical Endurance	2x107
Electricity Endurance	1x105
Vibration	10Hz~55Hz 1.5mm Double vibration amplitude
Impact	Stability：98m/s2 Strength：980m/s2

Application scenarios:

FQA

Q：What are the output type and load specs of CT-2754?

A：4-channel relay output, 3A@30VDC, with RC and flyback diode, channel-to-channel isolation.

Q：What devices can CT-2754 control?

A：Medium-power valves, solenoid coils, small motors, or other inductive/resistive loads.

Q：How does CT-2754 ensure reliability?

A：Each channel is independently isolated to reduce interference; relay lifespan up to 100,000 operations.

Certifications & Quality Assurance:

ODOT Products comply with international industrial standards, including CE and RoHS, and undergo strict quality control to ensure long-term reliable operation in industrial environments.