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The Allen Bradley 1336-SN-SP15A Snubber PCB is a protection circuit board designed for use inside Allen Bradley 1336 Series Adjustable Frequency AC Drives. It functions as part of the inverter power circuit, helping suppress voltage transients generated during high-speed switching operations.
In variable frequency drive systems, power semiconductor devices frequently switch large electrical loads to regulate motor speed and torque. These switching actions can create voltage spikes and electrical noise that may affect sensitive components. The 1336-SN-SP15A helps absorb transient energy and reduce electrical stress on the inverter power section.
This PCB is mainly used for maintenance replacement and restoration of existing 1336 series drive systems. It is commonly found in industrial motor control applications involving pumps, fans, conveyors, compressors, and production machinery.
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley |
| Model | 1336-SN-SP15A |
| Series | 1336 Series |
| Product Type | Inverter Snubber PCB |
| Board Type | Printed Circuit Board Assembly |
| Function | Voltage Transient Suppression |
| Application | AC Drive Power Circuit Protection |
| Compatible Equipment | Allen Bradley 1336 Series Inverter |
| Dimensions | 165 × 40 × 100 mm |
| Weight | 0.64 kg |
The Allen Bradley 1336-SN-SP15A provides electrical protection support for inverter power assemblies.
Key features include:
The board works as an important protection element within the inverter system, helping maintain reliable operation under variable load conditions.
The 1336-SN-SP15A operates by controlling transient electrical energy produced during inverter switching.
Operation process:
Drive Power Circuit → Switching Components → Snubber PCB → Motor Output Stage
During normal drive operation:
The snubber PCB does not control motor operation directly but provides protection for the power electronics responsible for motor control.
The Allen Bradley 1336-SN-SP15A is integrated into the power section of compatible inverter systems.
| Component | Function |
|---|---|
| Power Switching Module | Controls electrical energy conversion |
| Snubber PCB | Suppresses transient voltage |
| Control Board | Handles drive parameters and logic |
| Gate Drive Circuit | Controls switching devices |
| Motor Output Section | Supplies variable frequency power |
The PCB works together with other inverter components to improve system reliability and reduce failures caused by electrical stress.
| Industry | Typical Application |
|---|---|
| Manufacturing | Production equipment motor control |
| Water Treatment | Pump drive systems |
| HVAC | Fan and compressor regulation |
| Material Handling | Conveyor and lifting systems |
| Process Industry | Variable speed motor operation |
| Industrial Automation | AC drive-based machinery |
The 1336-SN-SP15A is suitable for facilities maintaining Allen Bradley 1336 series inverter installations.
Proper handling is required when replacing internal drive circuit boards.
Recommended practices:
Regular inspection of inverter components helps improve equipment availability and reduce unexpected downtime.
The Allen Bradley 1336-SN-SP15A is commonly used with:
| Component | Function |
|---|---|
| Allen Bradley 1336 Series AC Drive | Main inverter platform |
| Power Module Assembly | Motor power conversion |
| Drive Control PCB | Control and parameter processing |
| Gate Driver Board | Semiconductor switching control |
| Motor Protection Devices | Equipment safety monitoring |
| PLC Control System | Drive command and feedback |
| Model | Product Type | Application |
|---|---|---|
| Allen Bradley 1336-SN-SP15A | Inverter Snubber PCB | 1336 Series drive protection |
| Allen Bradley 1336-SN-SP14A | Inverter Snubber PCB | Transient suppression replacement |
| Allen Bradley 1336-SN-SP10A | Inverter Snubber PCB | Drive power protection |
| Allen Bradley 1336-CON Series | Drive Connection Components | Maintenance support |
| Allen Bradley 1336-BDB-SP Series | Drive Power Components | Inverter repair |
Model selection should be based on the installed 1336 drive model, hardware revision, and replacement requirements.
The 1336-SN-SP15A is a snubber PCB used inside Allen Bradley 1336 series drives to suppress voltage transients and protect inverter power circuits.
A faulty snubber circuit may increase electrical stress on power switching components and contribute to inverter faults or unstable operation.
No. It is specifically intended for compatible Allen Bradley 1336 series inverter configurations and should be matched according to drive specifications.
No. Motor control is handled by the drive control system. The snubber PCB provides protection for the inverter power circuit during switching operation.