ABB 716840K02 solid-state relay

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Product Overview:

The ABB 716840K02 Solid-State Relay (SSR) is a high-performance, contactless electronic switching device designed for industrial automation applications. Using advanced semiconductor control technology, it provides fast, noise-free switching for both AC and DC loads.
Compared with traditional electromechanical relays, the 716840K02 offers longer lifetime, faster switching speed, higher vibration resistance, and improved reliability — making it ideal for motor drives, heating systems, and PLC interface applications.

Technical Specifications:

• Model: 716840K02

• Type: Solid-State Relay

• Brand: ABB

• Control Voltage: 3–32 V DC

• Load Voltage Range: 24–280 V AC (DC output optional)

• Maximum Load Current: 25 A

• Switching Frequency: Up to 10 Hz

• On-State Voltage Drop: ≤ 1.6 V

• Dielectric Strength: ≥ 2500 Vrms

• Response Time: Turn-on ≤ 1 ms; Turn-off ≤ 1 ms

• Operating Temperature: -30°C to +80°C

• Mounting: DIN-rail or screw mount

• Housing Material: Industrial-grade epoxy resin

• Cooling: Natural or heat-sink assisted

• Protection Class: IP20

• Certifications: CE, UL, CSA

• Weight: Approx. 150 g

Features and Advantages:

1. No Mechanical Contacts – No wear, no sparks, no noise, ensuring long operational life.

2. High Reliability and Vibration Resistance – Ideal for harsh industrial conditions.

3. Fast Switching Response – Typical switching time less than 1 ms.

4. Low Power Consumption – Compatible with PLC and DCS outputs.

5. High Electrical Isolation – 2500 Vrms isolation between input and output.

6. Modular and Easy Installation – Simple wiring and maintenance.

7. Built-in Protection Circuit – Includes RC snubber and surge suppression.

Applications:

• Industrial automation and PLC control systems

• Electric heating and temperature regulation

• Motor starting and speed control

• Process control and signal switching

• Packaging, textile, and injection molding machinery

• Power electronics and testing equipment

Precautions:

1. Ensure proper heat dissipation during installation.

2. Do not exceed the rated load current.

3. Match control voltage with product specifications.

4. Avoid humid or corrosive environments.

5. Disconnect power before maintenance or replacement.

6. Use RC snubber or MOV for inductive loads.

7. Check polarity before wiring to prevent circuit damage.

The structure and details of the product：

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