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- Allen Bradley
- 1336-BR-SP5A
- Bridge Rectifer
- USA
- 100 × 25 × 85 mm
- 0.21 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Allen Bradley 1336-BR-SP5A Bridge Rectifier is a power electronic component associated with the Allen Bradley 1336 series of industrial motor drives. Its primary function is to perform AC-to-DC rectification within the drive’s power conversion section.
A bridge rectifier uses semiconductor diodes to convert an alternating-current input into a pulsating direct-current output. In a variable frequency drive, this rectified power is normally used to establish the DC bus that supplies the inverter section of the drive.
The DC bus is an important part of a motor drive because the inverter power stage uses it as the energy source for generating the controlled output supplied to the motor. The rectifier therefore sits near the beginning of the drive’s power conversion path.
The 1336-BR-SP5A is a drive-level component rather than a general-purpose standalone rectifier for arbitrary applications. Its electrical characteristics and mechanical arrangement must be matched with the associated 1336 drive hardware.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen Bradley |
| Model | 1336-BR-SP5A |
| Product Type | Bridge Rectifier |
| Series | 1336 Series |
| Main Function | AC-to-DC Rectification |
| System Role | Drive Power Conversion Stage |
| Application | Industrial Motor Drives |
| Typical Use | DC Bus Power Conversion |
| Dimensions | 100 × 25 × 85 mm |
| Weight | 0.21 kg |
| Application Area | Industrial Motor Control |
Product Features
The 1336-BR-SP5A provides rectification within the power section of a compatible 1336 series drive.
Key characteristics include:
- Bridge rectifier design
- Associated with Allen Bradley 1336 series drive hardware
- Converts AC input power into rectified DC
- Supports formation of the drive DC bus
- Suitable for industrial motor drive applications
- Compact 100 × 25 × 85 mm dimensions
- Stated weight of 0.21 kg
- Designed for integration into drive power electronics
- Suitable for drive maintenance and replacement applications
The rectifier works together with other components in the drive’s power section, including DC bus capacitors, switching devices, control electronics, and protection circuits.
Working Principle
The bridge rectifier converts the incoming alternating voltage into a unidirectional rectified waveform.
A simplified power conversion path is:
AC Input → Bridge Rectifier → DC Bus → Inverter Power Stage → Motor
The rectifier uses a bridge arrangement of semiconductor diodes so that the appropriate devices conduct during each half-cycle of the AC input. The resulting output provides the basis for the DC link used by the drive’s inverter.
DC bus capacitors and other power-stage components then work with the rectified supply to provide the electrical conditions required by the inverter section.
The rectifier itself does not regulate motor speed. Motor control is performed by the drive’s control and inverter circuitry downstream of the rectification stage.
Role in Allen Bradley 1336 Drives
The 1336-BR-SP5A occupies an important position in the drive’s power conversion chain.
| Function | Description |
| AC Rectification | Converts AC input into rectified DC |
| DC Bus Supply | Provides rectified energy for the DC link |
| Power Conversion | Forms part of the drive’s front-end power stage |
| Inverter Support | Supplies the energy used by the inverter section |
| Drive Integration | Works with other 1336 power components |
| Power Stage Maintenance | Can be replaced when the rectifier section requires service |
A problem in the rectifier section can affect the DC bus voltage and consequently prevent the inverter section from operating normally.
Industrial Applications
The 1336-BR-SP5A is intended for industrial motor drive equipment and related power conversion applications.
| Application | Typical Use |
| Industrial Motors | Variable-speed motor operation |
| Conveyors | Motor speed regulation |
| Pumps | Controlled pump operation |
| Fans | Variable-speed fan control |
| Material Handling | Drive-based motor control |
| Production Machinery | Motor speed and torque control |
| Industrial Automation | Drive system integration |
| Process Equipment | Controlled motor operation |
The exact application depends on the 1336 drive model and its electrical configuration.
Installation and Maintenance
The bridge rectifier is part of the drive’s power electronics and should be handled with appropriate electrical safety precautions.
Before working on the drive, all relevant power sources must be isolated and the DC bus must be verified to have discharged to a safe level according to the applicable maintenance procedure.
Recommended checks include:
- Confirm the complete 1336-BR-SP5A part number.
- Verify compatibility with the associated 1336 drive.
- Check the drive model and hardware configuration.
- Inspect the rectifier for visible damage or overheating.
- Check associated power connections.
- Inspect nearby DC bus components.
- Check for signs of failed semiconductor devices.
- Install the replacement with correct polarity and connections.
- Perform appropriate electrical and functional testing after replacement.
A failed bridge rectifier may be the result of another problem in the power stage, such as excessive current, a downstream short circuit, thermal stress, or abnormal DC bus conditions. For this reason, the surrounding circuitry should also be inspected.
Related Drive Components
The bridge rectifier operates as part of a larger power conversion system.
| Component | Function |
| AC Input Section | Supplies incoming drive power |
| Bridge Rectifier | Converts AC into rectified DC |
| DC Bus Capacitors | Smooth and store DC bus energy |
| Gate Driver | Controls power switching devices |
| Power Switching Devices | Generate controlled motor output |
| Control Board | Manages drive operation |
| Current Sensors | Provide electrical feedback |
| Cooling System | Removes heat from power components |
Understanding the relationship between these components can help technicians diagnose drive faults more accurately.
Recommended Related Models
| Model / Component | Type | Primary Function | Application |
| Allen Bradley 1336-BR-SP5A | Bridge Rectifier | AC-to-DC rectification | 1336 series drives |
| Allen Bradley 1336-BDB-SP31C | Gate Driver | Power switching control | 1336 series drives |
| Allen Bradley 1336 Series Power Components | Power Electronics | Drive power conversion | Industrial motor control |
| Allen Bradley Drive Control Boards | Control Electronics | Drive logic and control | Variable frequency drives |
| Allen Bradley DC Bus Components | Power Components | DC energy storage and filtering | Industrial drives |
When selecting a replacement rectifier, the complete part number, drive model, input configuration, power rating, mounting arrangement, and electrical characteristics should be verified. A rectifier with similar physical dimensions is not automatically a suitable replacement.
Key Advantages
- Provides AC-to-DC rectification
- Supports DC bus generation within compatible drives
- Associated with Allen Bradley 1336 series hardware
- Designed for industrial motor drive applications
- Compact 100 × 25 × 85 mm dimensions
- Stated weight of 0.21 kg
- Integrates with the drive’s power conversion stage
- Suitable for drive maintenance and replacement
- Works with associated DC bus and inverter components
Technical FAQs
What function does the 1336-BR-SP5A perform in a motor drive?
The 1336-BR-SP5A performs the rectification stage of the drive’s power conversion system. It converts incoming AC power into rectified DC that can be used by the drive’s DC bus and inverter section.
What symptoms may appear when a drive bridge rectifier fails?
A failed rectifier can result in DC bus problems, input-side faults, abnormal current behavior, inability to start, or repeated drive protection trips. The exact symptom depends on whether the rectifier has failed open, shorted, or developed another form of degradation.
Why should the DC bus be checked when replacing a bridge rectifier?
The rectifier and DC bus are electrically connected, so a problem in one section can affect the other. Damaged capacitors, downstream semiconductor failures, or abnormal bus conditions may contribute to rectifier failure and should be checked before returning the drive to service.
Is the 1336-BR-SP5A interchangeable with another bridge rectifier of the same size?
Not necessarily. Electrical ratings, diode characteristics, terminal arrangement, thermal requirements, mechanical mounting, and compatibility with the specific 1336 drive must all be considered. Matching dimensions alone does not establish electrical compatibility.