11 in stock
Schneider B351 Discrete Input Module
Schneider B351 Discrete Input Module
Brand/Manufacturer: Schneider Electric
Order Number: B351
Type: Digital I/O Cards
Country of Origin: France
Condition: Original Brand
Lead Time: Available in stock
Payment Term: 100% TT In Advance
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Description
The Schneider B351, also cataloged as the B351 115VAC discrete input module, operates as a dedicated hardware component for converting 115 VAC field discrete signals into digital logic states within Modicon PLC processing racks.
Suffix Breakdown & Model Matrix
| Model Suffix | Input Voltage | Input Points | Connection Method |
|---|---|---|---|
| B351 | 115 VAC | 8 Channels | Screw Terminals |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | B351 |
| Brand | Schneider |
| Origin | USA |
| Weight | 1.20 lbs (0.54 kg) |
| Dimensions | Standard Modicon 300 Series Rack Slot |
| Operating Temp | 0 deg C to +60 deg C |
| Power Consumption | 5 VDC backplane bus load (150 mA typical) |
| Input Nominal Voltage | 115 VAC |
| Input Range | 85 VAC to 132 VAC |
| Number of Inputs | 8 independent circuits |
| Circuit Isolation | 1500 VAC channel-to-backplane |
| Termination Type | Integrated screw terminal strip |
| Visual Diagnostics | Field-side LED status indicators |
Backplane Bus Communication Velocity & I/O Density Scaling
Engineered for industrial control environments, the Schneider B351 delivers optocoupler-based electrical isolation between high-voltage 115 VAC field circuits and low-voltage internal CPU backplane logic. The 8-channel input array features transient voltage suppression on each circuit to filter line noise, inductive kickback, and false switching states. Integrated field-side LED status indicators provide immediate visual verification of active input conditions, while deterministic backplane bus scanning ensures rapid status transfer to the central processor.
Frequently Asked Questions
Q: Can the Schneider B351 handle DC input voltages?
A: No, the B351 is designed specifically for 115 VAC discrete input signals and should not be wired to DC power sources.
Q: Are individual channels on the B351 optically isolated?
A: Yes, all eight 115 VAC input circuits feature optocouplers providing up to 1500 VAC isolation between field signals and internal PLC backplane logic.
Q: Does replacing a faulty B351 require re-wiring field conductors?
A: Field connections attach directly to screw terminals; wiring must be disconnected from the terminal strip during module replacement after shutting down rack power.
Field Installation Guidelines
Ensure all main rack AC supply and field circuit power sources are fully de-energized prior to installing or removing the B351 module. Mount the module firmly into its designated slot on the Modicon rack structure until locking mechanisms are securely engaged. Strip 115 VAC field wiring to recommended length and secure conductors to the screw terminal block, ensuring proper torque to avoid loose contacts. Route high-voltage AC cables away from low-voltage DC communication lines to prevent electromagnetic interference.
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Testimonials
Fast Delivery, Excellent Quality
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
Reliable Partner for Original Parts
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Professional Service with After-Sales Support"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
Trusted Source for Industrial Automation Spares
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson