Product Overview
The Schneider 52-0402-000 is a dedicated tap terminator designed for the Modicon Quantum automation platform. This critical accessory terminates unused drop locations on RS-485/Modbus networks, ensuring signal integrity and preventing data reflections that can cause communication errors. By absorbing excess energy at the end of the bus, the 52-0402-000 enhances network reliability and reduces downtime—a key factor in maintaining continuous industrial operations.
Operating at 24V DC with a low current consumption of 40 mA, this unit is engineered for energy efficiency and long service life. Its compact design (0.47 x 1.97 x 3.54 inches) and light weight (5.0 g) allow flexible mounting on DIN rails or panels without occupying excessive cabinet space.
Technical Specifications
| Parameter |
Value |
| Manufacturer |
Schneider Electric |
| Part Number |
52-0402-000 |
| Product Type |
Tap Terminator |
| Product Line |
Modicon Quantum |
| Input Voltage Range |
24V DC |
| Current Consumption |
40 mA |
| Relative Humidity |
5% to 95% (non-condensing) |
| Mounting |
DIN rail or panel mounting |
| Operating Temperature |
-20°C to 70°C |
| Storage Temperature |
-40°C to 85°C |
| Cable Length Supported |
0 to 100 meters |
| Signal Type |
Digital, RS-485/Modbus communication |
| Connector Type |
Screw terminal or plug-in terminal blocks |
| Compliance |
CE, UL, RoHS |
| Protection Features |
Surge protection |
| Status Indicators |
LED indicators |
These specifications ensure the Schneider 52-0402-000 meets the rigorous demands of industrial environments, from temperature extremes to electrical noise.
Installation & Setup Guidance
Mount the 52-0402-000 on a standard DIN rail or directly on a panel using the provided screw holes. Connect the RS-485/Modbus cable to the screw terminal or plug-in terminal block, observing proper polarity (A/B lines). The unit automatically terminates the bus when installed at the last device on the drop. LED indicators confirm power status and communication activity, simplifying commissioning. No special tools are required.
Compatibility & Integration
Designed exclusively for the Modicon Quantum automation platform, the Schneider 52-0402-000 integrates seamlessly with Quantum controllers, I/O modules, and remote drops. It supports RS-485/Modbus networks up to 100 meters per drop, making it suitable for distributed control architectures in manufacturing, water treatment, and energy management systems. For systems using other Schneider protocols, verify drop termination requirements before installation.
Selection Guide & Purchasing Advice
When ordering the 52-0402-000, confirm the quantity needed: one terminator per unused Modicon Quantum drop location. Each package contains one unit (set of 1). The compact footprint allows easy stocking. For volume orders or technical assistance, consult a reliable supplier like PLC Source PRO (available at ubest101.myshopify.com) to ensure genuine components and fast delivery.
Troubleshooting & Common Issues
If network communications fail intermittently, verify that the Schneider 52-0402-000 is installed on the correct drop and that cable length does not exceed 100 meters. Ensure the 24V DC supply is stable and within tolerance. LED indicators will blink during normal operation; a steady off or erratic pattern may indicate a faulty unit or wiring error. Surge protection built into the terminator protects against voltage spikes, but always follow proper grounding practices. Replace the unit immediately if physical damage is visible.