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- Allen Bradley
- 1336-SN-SP3A
- Converter Snubber PCB
- USA
- 165 × 50 × 140 mm
- 0.34 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Allen Bradley 1336-SN-SP3A Converter Snubber PCB is a protection circuit board used in Allen Bradley 1336 Series Adjustable Frequency AC Drives. Unlike standard inverter snubber boards, this model is applied specifically within converter-related power circuits to help control transient voltage generated during power conversion processes.
During AC drive operation, converter and inverter sections handle high-energy electrical conversion. Rapid switching and power changes can create voltage spikes that place additional stress on semiconductor components. The 1336-SN-SP3A helps absorb these transient disturbances, improving the protection level of the drive power electronics.
This PCB is mainly used as a replacement component during maintenance of existing Allen Bradley 1336 series drive systems. It supports stable operation of industrial motor control equipment used in automation lines, pumps, fans, conveyors, and other variable speed applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley |
| Model | 1336-SN-SP3A |
| Series | 1336 Series |
| Product Type | Converter Snubber PCB |
| Board Type | Printed Circuit Board Assembly |
| Function | Converter Circuit Transient Suppression |
| Application | AC Drive Power Protection |
| Compatible Equipment | Allen Bradley 1336 Series Drives |
| Dimensions | 165 × 50 × 140 mm |
| Weight | 0.34 kg |
Product Features
The Allen Bradley 1336-SN-SP3A provides protection support for converter power circuits.
Key features include:
- Designed for Allen Bradley 1336 series drive systems
- Converter-side snubber circuit protection
- Helps suppress electrical voltage spikes
- Reduces stress on converter power components
- Supports drive repair and maintenance operations
- Compact PCB assembly design
- Suitable for industrial power conversion environments
- Helps improve electrical stability
- Supports long-term operation of existing drive equipment
- Used as a replacement component in compatible systems
The board helps maintain reliable power conversion performance by managing transient electrical energy.
Working Principle
The 1336-SN-SP3A operates by reducing transient energy generated during converter operation.
Working process:
AC Input → Converter Section → Snubber PCB → DC Bus Circuit → Inverter Section
During operation:
- The converter section processes incoming AC power and converts it into DC power for the drive system.
- Switching actions and power fluctuations can generate temporary voltage overshoot.
- The snubber circuit provides a path to absorb and limit transient energy.
- Reduced voltage stress helps protect converter switching components.
- The drive maintains more stable power conversion performance.
The converter snubber PCB functions as a protection component and works together with the main drive control and power assemblies.
Application in AC Drive Systems
The Allen Bradley 1336-SN-SP3A is installed within compatible converter assemblies of 1336 series drives.
| Component | Function |
|---|---|
| Converter Circuit | Performs AC to DC power conversion |
| Snubber PCB | Suppresses converter switching transients |
| DC Bus Section | Stores and distributes converted power |
| Inverter Section | Produces variable frequency output |
| Control Board | Manages drive operation |
The snubber board supports reliable operation of the complete AC drive power architecture.
Industrial Applications
| Industry | Typical Application |
|---|---|
| Manufacturing | Automated production equipment |
| Water Treatment | Pump drive control |
| HVAC | Fan and compressor systems |
| Material Handling | Conveyor systems |
| Process Industry | Variable speed motors |
| Industrial Automation | Legacy drive maintenance |
The 1336-SN-SP3A is suitable for industrial facilities maintaining Allen Bradley 1336 series converter systems.
Installation and Maintenance
Proper replacement procedures are required when servicing converter PCB components.
Recommended practices:
- Disconnect all electrical power before maintenance.
- Confirm compatibility with the installed 1336 drive model.
- Inspect PCB connectors and mounting locations.
- Check converter power components for abnormal conditions.
- Use appropriate anti-static protection.
- Test drive operation after installation.
- Keep replacement records for future troubleshooting.
Regular inspection of converter protection components helps reduce unexpected drive downtime.
Compatible System Components
The Allen Bradley 1336-SN-SP3A is commonly used with:
| Component | Function |
|---|---|
| Allen Bradley 1336 Series AC Drive | Main drive platform |
| Converter Power Assembly | AC power conversion |
| DC Bus Components | Energy storage and distribution |
| Inverter Power Module | Motor output control |
| Drive Control Board | Parameter and logic management |
| PLC System | Drive command and monitoring |
Recommended Related Models
| Model | Product Type | Application |
|---|---|---|
| Allen Bradley 1336-SN-SP3A | Converter Snubber PCB | Converter circuit protection |
| Allen Bradley 1336-SN-SP10A | Inverter Snubber PCB | Inverter transient suppression |
| Allen Bradley 1336-SN-SP14A | Inverter Snubber PCB | Drive power protection |
| Allen Bradley 1336-SN-SP15A | Inverter Snubber PCB | AC drive maintenance |
| Allen Bradley 1336-SN-SP16A | Inverter Snubber PCB | Switching protection |
Model selection should be based on the drive configuration, converter/inverter section requirements, and installed hardware revision.
Key Advantages
- Provides transient protection for converter circuits
- Helps reduce electrical stress on power components
- Supports Allen Bradley 1336 drive maintenance
- Improves power conversion stability
- Compact PCB structure for internal installation
- Suitable for industrial variable speed drive systems
- Helps extend service life of converter components
- Supports restoration of existing automation equipment
Technical FAQs
What is the Allen Bradley 1336-SN-SP3A used for?
The 1336-SN-SP3A is a converter snubber PCB used in Allen Bradley 1336 series drives to suppress electrical transients in the converter power section.
What is the difference between converter and inverter snubber PCBs?
Converter snubber PCBs protect the AC-to-DC conversion stage, while inverter snubber PCBs mainly protect the DC-to-AC output switching stage.
Does the 1336-SN-SP3A control drive operation?
No. The board is a protection component and does not perform motor control or drive parameter processing.
When should the converter snubber PCB be replaced?
Replacement is typically required when the drive experiences converter faults, abnormal electrical stress, or when inspection identifies PCB damage.