Schneider SR2B121FU Compact Smart Relay
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Model | SR2B121FU |
| Product Series | Zelio Logic |
| Product Type | Compact Smart Relay |
| Number of I/O | 12 |
| Rated Supply Voltage | 100–240 V AC |
| Supply Voltage Range | 85–264 V AC |
| Supply Frequency | 50/60 Hz |
| Maximum Supply Current | 80 mA at 100 V AC; 30 mA at 240 V AC, without extension |
| Power Consumption | 7 VA, without extension |
| Number of Digital Inputs | 8 |
| Digital Input Voltage | 100–240 V AC |
| Digital Input Current | 0.6 mA |
| Analog Inputs | 0 |
| Number of Outputs | 4 relay outputs |
| Output Contact Type | Normally open (NO) |
| Relay Output Voltage | 24–250 V AC; 5–30 V DC |
| Output Thermal Current | 8 A total for all four relay outputs |
| Local Display | Built-in display |
| Programming Languages | Ladder Diagram (LD), Function Block Diagram (FBD) |
| Programming Capacity | Up to 240 ladder lines or 500 FBD control blocks, depending on programming mode |
| Cycle Time | 6–90 ms |
| Real-Time Clock | Built-in |
| Program Backup | Up to 10 years at 25°C under specified conditions |
| Electrical Isolation Voltage | 1780 V |
| Mounting | 35 mm DIN rail or screw fixing |
| Operating Temperature | -20°C to +55°C |
| Dimensions | 107.6 × 71.2 × 59.5 mm |
| Weight | 0.25 kg |
FAQ
Q1: What is the main function of the Schneider SR2B121FU Compact Smart Relay?
A1: The SR2B121FU is a programmable smart relay in the Zelio Logic series. It executes user-defined control logic to automate small machines, lighting systems, pumps, ventilation equipment, and other applications requiring basic sequencing and relay-based control.
Q2: What power supply does the SR2B121FU require?
A2: This model uses a 100–240 V AC rated supply and supports a supply voltage range of 85–264 V AC at 50/60 Hz. Verify the supply voltage and wiring before energizing the unit.
Q3: Can the SR2B121FU connect directly to 24 V DC sensors?
A3: Its eight digital inputs are designed for 100–240 V AC signals, so standard 24 V DC sensor outputs should not be connected directly as though they were compatible inputs. Use an appropriate interface or select a relay model designed for 24 V DC inputs.
Q4: What programming software and languages does this smart relay support?
A4: The SR2B121FU supports Ladder Diagram (LD) and Function Block Diagram (FBD) programming using Schneider Electric Zelio Soft software. Confirm software compatibility and communication accessories before uploading or modifying a program.
Q5: Why does the relay power on but fail to activate its outputs?
A5: Possible causes include incorrect program logic, unsatisfied input conditions, wiring errors, or damaged relay contacts. Check the display, input status, program execution, and output wiring. Disconnect power before inspecting terminals or carrying out electrical continuity tests.
Q6: What are the limitations of the four relay outputs?
A6: The outputs support 24–250 V AC or 5–30 V DC, with a combined thermal current of 8 A across all four outputs. Actual permissible current depends on the load type and switching conditions. Check the load ratings and use suitable protection for inductive loads.
Q7: Can the SR2B121FU retain its program after a power failure?
A7: Yes. The relay has program memory backup rated for up to 10 years at 25°C under specified conditions. After power is restored, check the program status, real-time clock settings, and controlled equipment operation.
Q8: What should be checked before replacing an existing smart relay with the SR2B121FU?
A8: Confirm the supply voltage, input signal type, output ratings, terminal assignments, program compatibility, and mounting requirements. Because this model uses AC digital inputs, it may not be a direct replacement for a model with 24 V DC inputs. Test all control functions before returning the system to service.
Schneider SR2B121FU Compact Smart Relay is in stock. Please contact us for a quick quote and competitive pricing.
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Company Introduction
Xiamen Shengruite Trading Co., Ltd. is a company specializing in the supply of industrial PLC spare parts.
We provide high-quality PLC spare parts to customers in the global manufacturing, energy and power, chemical and other fields.
Since its establishment in 2011, after 13 years of rapid development, the cumulative global shipments have reached 223,650 pieces, with an annual output value of US$50 million.
Successfully served more than 500 customers in more than 100 countries and regions including Saudi Arabia, UAE, the United States, Europe, Africa, and Southeast Asia
Our Mission
Provide customers with the best quality PLC spare parts and the fastest delivery service to ensure that their industrial automation systems are always in the best operating condition.
We provide a 1-year warranty service, and we support returns and exchanges for any issues to ensure your rights and interests are fully protected.
We can provide detailed product images upon request, and our team can arrange warehouse photos for confirmation to ensure you have all the information you need before making a purchase.
Shipping times vary depending on your location. With the support of our 16 global warehouses, we strive to deliver orders as quickly as possible. Contact us to get an estimated delivery time for your specific location.
The minimum order quantity (MOQ) is typically one unit. However, for larger orders, please contact us for potential discounts and pricing details.
Yes, we offer competitive pricing for bulk purchases. Please reach out to our sales team with the specifics of your order to receive a custom quote.
We accept various payment methods for wholesale orders, including bank transfers (T/T), letters of credit, and other options upon agreement. For large transactions, please contact us directly for payment terms.
Yes, we offer flexible ordering options for both small and large quantities. Whether youre looking for a single unit or a large batch, we can accommodate your needs.
We occasionally offer promotional discounts for new wholesale customers. Contact us to learn more about any current offers available for first-time buyers.
If you are unsure of compatibility with your existing setup please provide your system details and our support team can verify compatibility prior to purchase.
Returns are accepted within 30 days if the product is unused, unopened, and in its original packaging. Please note that return shipping and associated costs are the buyer\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’s responsibility.
Yes, we offer technical support for the installation and integration of our products. Our team can assist with setup, configuration, and troubleshooting to ensure a smooth installation.
