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- Allen Bradley
- 1336-SN-SP8A
- Converter Snubber PCB
- USA
- 125 × 30 × 100 mm
- 0.23 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Allen Bradley 1336-SN-SP8A 1336 Series Converter Snubber PCB is a snubber printed circuit board used within compatible Allen Bradley 1336 Series converter equipment. It belongs to the power-electronics section of the drive and is associated with controlling transient electrical conditions generated during power switching.
Unlike a control PCB, the 1336-SN-SP8A does not primarily execute drive logic, process speed commands, or handle external communication. Its function is tied to the electrical behavior of the converter power circuit, where rapid switching and circuit inductance can produce voltage transients that need to be controlled.
For maintenance engineers servicing legacy 1336 Series drives, this board can be an important replacement component when inspecting the converter’s power section. Correct identification of the associated drive and original PCB position should be completed before replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley |
| Model | 1336-SN-SP8A |
| Product Family | 1336 Series |
| Product Type | Converter Snubber PCB |
| Primary Function | Converter Power-Circuit Transient Control |
| System Role | Power Electronics |
| Application | Industrial Variable Frequency Drives |
| Dimensions | 125 × 30 × 100 mm |
| Weight | 0.23 kg |
Product Features
The 1336-SN-SP8A is associated with the converter section of compatible 1336 Series inverter equipment.
Key characteristics include:
- Allen Bradley 1336 Series converter snubber PCB
- Model 1336-SN-SP8A
- Intended for compatible converter power circuitry
- Supports transient control during power switching
- Works together with associated power semiconductor components
- Suitable for internal drive power-section maintenance
- Applicable to legacy 1336 Series equipment
- Useful for PCB-level drive repair
- Requires correct matching with the associated drive configuration
- Suitable for industrial motor-control systems
The board should be selected according to the actual drive configuration rather than simply by comparing the physical appearance of different 1336 Series snubber boards.
Working Principle
The 1336-SN-SP8A functions as part of the converter’s transient-control network.
A simplified relationship is:
Converter Power Circuit → Switching Components → Snubber Network → Drive Power Stage
During switching, current can change rapidly through the power circuit. Because the circuit contains inductive elements, these changes can generate transient voltage conditions. The snubber network helps control the resulting electrical stress and unwanted oscillation.
The board therefore works in conjunction with the converter’s switching components and other power-circuit elements. Its function is not to regulate the motor directly, but to support the electrical conditions under which the converter’s power devices operate.
If the snubber circuit becomes damaged, the surrounding power section should also be inspected because transient-related failures can involve multiple components.
Role in a 1336 Series Converter
The 1336-SN-SP8A belongs to the converter/power-electronics layer of the drive architecture.
Input Power → Converter Power Section → Switching Devices + Snubber Network → Inverter / Motor Power Circuit
| Drive Section | Function |
|---|---|
| Input Section | Receives incoming electrical power |
| Converter Section | Processes electrical power for the drive |
| Switching Devices | Perform high-speed power switching |
| 1336-SN-SP8A | Controls switching transients |
| Control Electronics | Handles drive control functions |
| DC Link Components | Store and filter electrical energy |
| Output Section | Delivers controlled power to the motor |
This separation is useful during troubleshooting because the snubber PCB performs a different task from the drive’s processor, control board, or communication hardware.
Industrial Applications
The 1336-SN-SP8A is relevant to industrial facilities that continue to operate compatible Allen Bradley 1336 Series drive equipment.
| Application | Typical Use |
|---|---|
| Motor Drive Systems | Power-section maintenance |
| Conveyor Equipment | Legacy inverter servicing |
| Pump Systems | Drive repair and replacement |
| Fan Applications | Variable-speed drive maintenance |
| Material Handling | Industrial motor control |
| Machine Tools | Internal drive electronics servicing |
| Manufacturing Lines | Existing 1336 drive maintenance |
| Plant Maintenance | PCB-level replacement |
The exact application depends on the 1336 Series drive model and the converter configuration in which the PCB is installed.
Installation and Maintenance
The 1336-SN-SP8A is associated with the drive’s power circuitry, so maintenance should be performed only after the drive has been properly isolated and the DC bus has been verified to be in a safe condition.
Before replacing the board, technicians should:
- Confirm the complete 1336-SN-SP8A part number.
- Identify the associated 1336 Series drive.
- Record the original board position.
- Document connector and wiring locations.
- Inspect the PCB for burned or damaged components.
- Check nearby power semiconductor devices.
- Inspect capacitors and other power-circuit components.
- Check connectors for discoloration or loose contacts.
- Follow the applicable drive shutdown and discharge procedure.
- Verify that the DC bus is discharged before accessing the power section.
- Install the replacement board in the correct position.
- Recheck all connections before energizing the drive.
- Perform a controlled functional test after replacement.
If the original board failed because of an electrical event, simply replacing the PCB may not be sufficient. The associated converter components should be inspected for secondary damage.
Related Components
The snubber PCB operates as part of a larger 1336 Series drive power architecture.
| Component | Function |
|---|---|
| Allen Bradley 1336 Series Drive | Variable-speed motor control |
| Converter Power Components | Process incoming electrical power |
| Power Semiconductor Devices | Perform switching |
| DC Link Components | Energy storage and filtering |
| Control Board | Executes drive control functions |
| Gate Drive Circuitry | Controls power-device switching |
| Cooling System | Removes heat from power electronics |
| Motor | Receives controlled electrical power |
The condition of these components can directly influence the operating environment of the snubber network.
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Allen Bradley 1336-SN-SP8A | 1336 Series Converter Snubber PCB | Converter transient control |
| Allen Bradley 1336-SN-SP3A | 1336 Series Converter Snubber PCB | Converter power-section maintenance |
| Allen Bradley 1336-SN-SP6A | 1336 Series Inverter Snubber PCB | Inverter transient control |
| Allen Bradley 1336-SN-SP10A | 1336 Series Inverter Snubber PCB | Drive power-section servicing |
| Allen Bradley 1336-SN-SP14A | 1336 Series Inverter Snubber PCB | Legacy drive maintenance |
These boards should not be assumed to be interchangeable. The correct replacement should be verified against the original part number and associated 1336 Series drive configuration.
Key Advantages
- Designed for compatible Allen Bradley 1336 Series converter equipment
- Supports transient management within the power circuit
- Works alongside converter switching components
- Helps control electrical stress generated during switching
- Suitable for internal drive power-section maintenance
- Useful for legacy 1336 Series repair projects
- Supports continued service of established motor-drive equipment
- Suitable for PCB-level troubleshooting and replacement
Technical FAQs
What is the Allen Bradley 1336-SN-SP8A used for in a 1336 Series converter?
The 1336-SN-SP8A is a converter snubber PCB used within compatible 1336 Series drive power circuitry. Its primary function is to help control transient electrical conditions associated with switching in the converter power section.
How does a snubber PCB protect the converter power circuit?
The snubber network helps manage voltage transients and electrical oscillations caused by rapid switching and circuit inductance. By controlling these transient conditions, it helps maintain a more suitable electrical environment for the associated power devices.
What components should be checked when replacing a 1336-SN-SP8A?
The surrounding converter power devices, capacitors, wiring, connectors, and related power-circuit components should be inspected. If the original PCB failed because of excessive electrical stress, another damaged component may be responsible for the failure.
Can the 1336-SN-SP8A be replaced with another 1336 Series snubber PCB?
Not automatically. Snubber boards can correspond to different drive or power-section configurations even when they belong to the same product family. The exact part number and associated drive configuration should be verified before selecting a replacement.