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- Allen Bradley
- 1336-SN-SP14A
- Inverter Snubber PCB
- USA
- 165 × 40 × 100 mm
- 0.64 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Allen Bradley 1336-SN-SP14A Snubber PCB is a dedicated replacement circuit board used in Allen Bradley 1336 Series Adjustable Frequency AC Drives. It is installed within the inverter power section to provide transient voltage suppression and help protect power switching components during drive operation.
When an AC drive controls motor speed through high-frequency switching, the rapid switching action of power semiconductor devices can generate voltage spikes and electrical disturbances. The snubber PCB absorbs and limits these transient effects, reducing stress on components such as power modules and switching circuits.
The 1336-SN-SP14A is mainly used for drive maintenance and repair applications, helping restore the electrical protection function of existing 1336 series inverter systems used in industrial motor control applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley |
| Model | 1336-SN-SP14A |
| Series | 1336 Series |
| Product Type | Inverter Snubber PCB |
| Board Type | Printed Circuit Board Assembly |
| Function | Transient Voltage Suppression |
| Application | AC Drive Power Circuit Protection |
| Compatible Equipment | Allen Bradley 1336 Series Inverter |
| Dimensions | 165 × 40 × 100 mm |
| Weight | 0.64 kg |
Product Features
The Allen Bradley 1336-SN-SP14A provides electrical protection support for inverter power circuits.
Key features include:
- Designed for Allen Bradley 1336 series drives
- Snubber protection circuit assembly
- Helps reduce switching voltage spikes
- Protects inverter power electronics
- Supports AC drive repair and replacement
- Compact PCB structure
- Suitable for industrial motor control systems
- Improves power circuit operating stability
- Helps reduce stress on switching components
- Supports long-term maintenance of existing drive installations
The PCB works as an important protection component inside the inverter, improving reliability during continuous motor operation.
Working Principle
The 1336-SN-SP14A operates as a transient suppression circuit within the inverter power stage.
Signal and protection path:
AC Power Input → Inverter Power Module → Switching Circuit → Snubber PCB → Motor Output
During operation:
- The inverter controls motor speed by rapidly switching power semiconductor devices.
- Switching transitions create temporary voltage overshoot and high-frequency electrical noise.
- The snubber circuit absorbs part of the transient energy.
- The voltage spike level is reduced before it can damage sensitive power components.
- The inverter operates with improved electrical stability.
By controlling switching-related disturbances, the snubber PCB helps extend the service life of inverter power components.
Application in AC Drive Systems
The Allen Bradley 1336-SN-SP14A is used as an internal protection element in variable frequency drive systems.
| Component | Function |
|---|---|
| Power Semiconductor Module | Performs motor power switching |
| Snubber PCB | Suppresses voltage transients |
| Control PCB | Handles drive logic and parameters |
| Gate Drive Circuit | Controls switching devices |
| Motor System | Receives variable frequency output |
The snubber board works together with other drive components to maintain stable motor control performance.
Industrial Applications
| Industry | Typical Application |
|---|---|
| Manufacturing | Production line motor control |
| Material Handling | Conveyor and lifting equipment |
| Water Treatment | Pump speed regulation |
| HVAC | Fan and compressor control |
| Process Industry | Variable speed motor operation |
| Industrial Automation | AC drive-based equipment control |
The 1336-SN-SP14A is suitable for facilities maintaining Allen Bradley 1336 series inverter systems.
Installation and Maintenance
Proper replacement procedures are required when servicing inverter PCB components.
Recommended practices:
- Disconnect all power sources before installation.
- Confirm compatibility with the existing 1336 drive model.
- Check PCB connectors and mounting points.
- Inspect surrounding power components before replacement.
- Prevent electrostatic discharge during handling.
- Verify inverter operation after installation.
- Record maintenance details for future troubleshooting.
Regular inspection of drive internal components helps reduce unexpected downtime.
Compatible System Components
The Allen Bradley 1336-SN-SP14A is commonly used with:
| Component | Function |
|---|---|
| Allen Bradley 1336 Series AC Drives | Main inverter platform |
| Power Modules | Motor power conversion |
| Drive Control Boards | Drive operation control |
| Gate Driver Assemblies | Semiconductor switching control |
| Motor Protection Equipment | System safety monitoring |
| PLC Control Systems | Drive command and communication |
Recommended Related Models
| Model | Product Type | Application |
|---|---|---|
| Allen Bradley 1336-SN-SP14A | Inverter Snubber PCB | 1336 Series drive protection |
| Allen Bradley 1336-SN-SP10A | Inverter Snubber PCB | Drive transient suppression |
| Allen Bradley 1336-CON-019 | Drive Connection Component | Maintenance replacement |
| Allen Bradley 1336-MOD-KC005 | Drive Option Module | System expansion |
| Allen Bradley 1336-BDB-SP Series | Drive Power Component | Inverter repair |
Model selection should be based on the installed 1336 drive model, hardware configuration, and replacement requirements.
Key Advantages
- Provides voltage transient suppression for inverter circuits
- Helps protect power switching components
- Supports Allen Bradley 1336 drive maintenance
- Reduces electrical stress during switching operation
- Improves drive system reliability
- Compact PCB assembly design
- Suitable for industrial motor control environments
- Helps extend service life of existing AC drives
Technical FAQs
What is the Allen Bradley 1336-SN-SP14A used for?
The 1336-SN-SP14A is a snubber PCB installed in Allen Bradley 1336 series drives to suppress voltage transients and protect inverter power circuits.
Why does an AC drive need a snubber PCB?
The snubber circuit helps absorb switching-generated voltage spikes caused by power semiconductor operation, reducing stress on inverter components.
Is the 1336-SN-SP14A a complete inverter unit?
No. It is an internal printed circuit board component used as part of an Allen Bradley 1336 series AC drive assembly.
When should the snubber PCB be replaced?
Replacement is generally required when the drive experiences power circuit faults, abnormal switching behavior, or when the PCB shows signs of damage.