5Pcs 1 Channel DC 3V/3.3V Power Relay Module by JESSINIE 10A 250VAC

Description

Product Overview

The JESSINIE 5‑piece 1‑channel DC 3V/3.3V relay module is engineered for precision control in demanding industrial and scientific environments. Each unit integrates a high‑quality optocoupler that electrically isolates the control signal from the high‑power switching circuit, protecting sensitive microcontrollers from voltage spikes and noise. The module supports dual voltage ratings: a robust 10 A 250 VAC capability for AC loads and a 10 A 30 V DC rating for DC applications, allowing versatile deployment across a wide range of equipment.

Mechanically, the relay features a compact footprint of 6.77 × 4.21 × 1.61 inches and weighs only 5.93 ounces, making it suitable for dense PCB layouts and space‑constrained enclosures. The onboard indicator LED provides immediate visual feedback on relay status, simplifying troubleshooting and reducing downtime. The relay contacts are rated for 100,000 continuous switching cycles, delivering long‑term reliability even under heavy load conditions.

Electrical performance is further enhanced by diode laxative protection that suppresses voltage transients during switching, ensuring a short response time and stable operation. The module’s design incorporates a dual power supply selection, granting strong anti‑interference capability and high reliability through photoelectric isolation protection. This combination of features makes the module an ideal choice for automation, robotics, and any application requiring precise, isolated control of high‑current loads.

Usage

Designed with versatility in mind, this relay module fits seamlessly into a variety of real‑world scenarios. In industrial automation, it can drive solenoid valves, motor starters, and heating elements, providing reliable actuation while keeping control circuitry safe from high‑voltage hazards. Hobbyists and makers will appreciate its compatibility with popular microcontroller platforms such as Arduino, Raspberry Pi, and ESP32, where the optocoupler input can be directly connected to digital I/O pins for straightforward programming.

For laboratory equipment, the module’s precise isolation and low‑noise characteristics enable accurate control of experimental rigs, including temperature controllers, spectrometer shutters, and fluidic pumps. Its sturdy rotary crimp terminals ensure a firm, vibration‑resistant connection, which is essential in environments subject to mechanical stress or frequent re‑wiring. The module also excels in renewable energy projects, where it can safely switch between solar panels, battery banks, and inverter loads without compromising system integrity.

Installation is simplified by the fixed mounting holes that align with standard PCB drill patterns, allowing quick and secure fastening. The clear labeling of input and output pins reduces wiring errors, and the module’s compact size means it can be stacked or grouped with other control boards for complex multi‑channel systems. Whether you are building a prototype, upgrading an existing control panel, or designing a new product line, this relay module offers the flexibility and durability required for professional‑grade performance.

Why Choose Us

Choosing the JESSINIE relay module means investing in a product backed by rigorous quality assurance processes and a reputation for reliability. Each unit undergoes comprehensive testing for electrical endurance, thermal stability, and mechanical resilience, ensuring that it meets or exceeds industry standards for electromechanical relays. Our manufacturing facilities employ precision stamping and automated assembly techniques, resulting in consistent contact resistance and uniform performance across every batch.

We understand that after‑sales support is critical for engineers and developers. That’s why JESSINIE provides responsive technical assistance, detailed datasheets, and application notes to help you integrate the relay module quickly and efficiently. Our commitment to continuous improvement means we regularly update our designs based on customer feedback, incorporating the latest advancements in isolation technology and component durability.

In addition to product excellence, we offer a comprehensive warranty that covers manufacturing defects, giving you peace of mind and confidence in long‑term deployments. Our global distribution network ensures fast delivery and easy access to replacement parts, minimizing downtime for mission‑critical applications. When you select JESSINIE, you are not only getting a high‑performance relay but also a partnership dedicated to your success.

Key Features

• Optocoupler isolation protects microcontroller circuits from high‑voltage spikes.
• Dual rating of 10 A 250 VAC and 10 A 30 V DC supports a wide range of load types.
• 100 k switching cycles guarantee long‑term durability for continuous operation.
• Rotary crimp terminals provide secure, vibration‑resistant connections.
• Responsive JESSINIE customer support and warranty ensure reliable after‑sales service.

FAQ

What does optocoupler isolation mean for my circuit?

Optocoupler isolation creates a physical barrier between the control side (low voltage) and the load side (high voltage). This prevents voltage spikes, noise, and ground loops from reaching sensitive components like microcontrollers, improving overall system stability and safety.

Can I use this relay module with a 5 V Arduino board?

Yes. The input side of the module accepts standard logic‑level signals from a 5 V microcontroller. Connect the Arduino’s digital output pin to the module’s input port, and the optocoupler will handle the isolation while the relay switches the higher‑power load.

How do the rotary crimp terminals improve reliability?

Rotary crimp terminals use a screw‑driven mechanism to press the wire firmly into the terminal block, creating a low‑resistance, mechanically stable connection. This design resists loosening due to vibration or thermal expansion, ensuring consistent electrical contact over the product’s lifespan.

What is the maximum switching frequency?

The relay is designed for typical industrial control applications with a switching frequency up to 10 Hz. For higher‑frequency requirements, consider solid‑state relays or specialized driver circuits.

Is there a warranty or support for this product?

JESSINIE provides a one‑year limited warranty covering manufacturing defects. Our technical support team is available to assist with integration, troubleshooting, and any questions you may have about the relay’s performance.