SCHNEIDER 140CPU43412A Relays

Description

SCHNEIDER 140CPU43412A Relays

Schneider Electric is a global leader in relay technology, primarily under the Zelio and TeSys product lines. Their relay portfolio ranges from slim interface relays for PLCs to heavy-duty power relays for industrial machinery.

1. Product Detailed Description

Schneider relays are electromagnetic or solid-state switches used to control a high-power circuit with a low-power signal. They provide electrical isolation between control units (like a PLC) and load units (like a motor or heater).

Main Series:

• Zelio Relay (RSB, RXM, RUM, RPF): Electromechanical relays for general-purpose switching.

• Zelio SSL / SSP: Solid State Relays for high-frequency switching and silent operation.

• TeSys Deca / Ultra: Overload and control relays specifically for motor protection.

2. Technical Parameters (Typical for RXM Series)

Note: Parameters vary significantly between Miniature, Universal, and Power relays.

3. Product Advantages

• “Lockable” Test Button: Most Schneider industrial relays (like the RXM) include a one-step lockable test button, allowing technicians to manually force the contacts for circuit testing.

• Mechanical Flag & LED Indicator: Provides dual visual confirmation of the relay status (mechanical window for physical position and LED for coil energization).

• Space-Saving Design: Slim interface relays (e.g., Zelio RSB) are only 12–16mm wide, maximizing DIN rail density.

• Tool-free Installation: Push-in terminal sockets allow for fast wiring and high vibration resistance.

• Wide Voltage Compatibility: Coils are designed to handle wide fluctuations in control voltage without overheating or “chattering.”

4. Important Considerations (Precautions)

• Contact Material Selection: For switching low-level signals (e.g., gold-plated contacts are preferred for $< 5$V or $< 10$mA) to prevent oxidation and ensure conductivity.

• Inductive Loads: When switching inductive loads (solenoids, contactors), use a protection module (diode for DC, varistor/RC circuit for AC) to suppress back-EMF and extend contact life.

• Heat Dissipation: For Solid State Relays (SSR), ensure adequate heat sinking and airflow, as they generate heat proportional to the load current.

• Mounting Orientation: While most are DIN-rail mounted, ensure proper clearance for ventilation as specified in the datasheet.

5. Product Applications

• Industrial Automation: Interfacing PLCs with actuators, sensors, and valves.

• HVAC Systems: Controlling fans, compressors, and dampers in building management systems.

• Power Distribution: Providing logic and auxiliary signaling in medium and low voltage switchgear.

• Hoisting & Logistics: Control logic for conveyors, elevators, and automated sorting machines.

• Food & Beverage: Reliable switching in wash-down environments using sealed or SSR variants.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Please make an inquiry for more models：