Industrial EMI Suppression Solution — Allen-Bradley 1336-RFB-30-A-4 | 1336 PLUS Series
Where This Product Is Used
The Allen-Bradley 1336-RFB-30-A-4 Input RFI Filter Module is engineered for industrial environments where electromagnetic interference (EMI) and radio-frequency interference (RFI) from variable frequency drives (VFDs) must be suppressed at the source. Typical deployment scenarios include:
- Pump & Water Treatment Plants — Eliminates conducted EMI from 1336 PLUS drives controlling centrifugal pumps, preventing interference with SCADA instrumentation and flow meters.
- HVAC & Building Automation — Installed upstream of fan and compressor drives in commercial buildings to meet EN 61800-3 Category C2 emission limits.
- Conveyor & Material Handling Systems — Protects PLC I/O modules and encoder feedback signals from drive-generated noise on shared power rails.
- CNC Machining Centers — Reduces RFI that can corrupt servo drive communication and spindle encoder signals in precision machining environments.
- Oil & Gas Upstream Equipment — Used on wellhead pump drives where long cable runs amplify conducted emissions and threaten field instrument integrity.
- Food & Beverage Processing Lines — Supports compliance with strict EMC requirements in facilities using variable-speed mixers, fillers, and conveyors.
Technical Specifications
- Part Number: 1336-RFB-30-A-4
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Series: 1336 PLUS / 1336 PLUS II Compatible
- Module Type: Input RFI (Radio Frequency Interference) Filter
- Current Rating: 30 A
- Voltage Rating: 480 V AC (3-phase)
- Frequency: 50/60 Hz
- Attenuation: Conducted emissions suppression per EN 55011 / CISPR 11 Class A
- Mounting: Panel / DIN rail compatible, drive-integrated mounting bracket
- Weight: 4.8 kg
- Enclosure: IP20 (for use inside control cabinet)
- Operating Temperature: 0°C to +40°C
- Standards: CE Marked, UL Listed
Why Engineers Specify This Model
- OEM-Matched Performance — Designed specifically for the 1336 PLUS drive family; impedance-matched to minimize insertion loss while maximizing attenuation across the 150 kHz–30 MHz conducted emission band.
- Plug-and-Play Integration — Mounts directly to the 1336 PLUS drive chassis using the factory bracket, eliminating custom enclosure fabrication and reducing commissioning time.
- Regulatory Compliance Enablement — Provides the conducted emission attenuation required to achieve CE marking under the EMC Directive (2014/30/EU) for machinery exported to European markets.
- Protects Sensitive Instrumentation — Prevents drive-generated noise from propagating back onto the supply network and corrupting analog 4–20 mA signals, thermocouples, and RTD inputs.
- Proven Field Reliability — Rockwell Automation’s 1336-RFB series has a documented service history in heavy industrial applications with MTBF exceeding 100,000 hours under rated conditions.
Complete System Bill of Materials
For a fully compliant 1336 PLUS drive installation with EMC protection, engineers typically specify the following alongside the 1336-RFB-30-A-4:
- Allen-Bradley 1336 PLUS II VFD (matched kW/HP rating)
- 1336-MOD-A2 — Dynamic Brake Module (if regenerative braking required)
- 1321-3R Series Line Reactor (additional harmonic mitigation)
- Shielded motor cable (Belden 29500 series or equivalent, 360° termination at both ends)
- 1336-GM-1 — Ground fault monitoring module
- Ferrite core clamps on motor cable (if cable run exceeds 30 m)
- Rockwell Automation 1756-EN2T EtherNet/IP communication module (for ControlLogix integration)
Compliance & Industry Standards
- CE Marking — EMC Directive 2014/30/EU; Low Voltage Directive 2014/35/EU
- UL 508C — Power Conversion Equipment
- EN 61800-3:2004+A1:2012 — Adjustable Speed Electrical Power Drive Systems, EMC requirements
- CISPR 11 / EN 55011 — Industrial, Scientific and Medical Equipment — Radio-frequency disturbance characteristics
- IEC 61000-4-2 / -4-4 / -4-5 — ESD, EFT/Burst, and Surge immunity
- RoHS Compliant — Restriction of Hazardous Substances Directive 2011/65/EU
Quality Assurance & Sourcing
Konmask.com sources the 1336-RFB-30-A-4 exclusively through verified industrial distribution channels. Every unit undergoes the following before dispatch:
- Visual Inspection — Housing integrity, label authenticity, connector condition, and absence of counterfeit indicators checked against Rockwell Automation OEM reference samples.
- Functional Verification — Continuity and insulation resistance tested; filter capacitance and inductance values verified against published datasheet tolerances.
- Traceability — Lot code, date code, and serial number recorded and available upon request for warranty and maintenance tracking.
- Packaging — Anti-static bag, foam-lined carton, and moisture-barrier seal for safe international transit.
How to Source This Part
- In-Stock Orders: Add to cart and complete checkout — standard lead time is 1–3 business days for domestic CN shipments.
- International Inquiries: Contact support@konmask.com for DDP/DAP pricing, export documentation (CO, packing list, commercial invoice), and freight options.
- Bulk / Project Quotes: For quantities ≥ 5 units or full-project BOM sourcing, email your BOM to support@konmask.com for a consolidated quote within 24 hours.
- Urgent Requirements: Call +0086 19859288691 for same-day availability confirmation and expedited shipping options.
Application-Specific FAQ
Q: Can the 1336-RFB-30-A-4 be used with drives other than the 1336 PLUS series?
A: The filter is optimized for the 1336 PLUS / PLUS II drive family. While the electrical ratings (30 A / 480 V) may match other drives, the mechanical mounting bracket is specific to the 1336 chassis. Consult Konmask for cross-reference options for PowerFlex or other Rockwell drives.
Q: Is this filter sufficient to achieve CE marking for my machine?
A: The 1336-RFB-30-A-4 addresses conducted emissions on the input side. Full CE compliance also requires proper motor cable shielding, grounding practices, and potentially an output dV/dt filter. Konmask can provide a complete EMC compliance BOM on request.
Q: What is the maximum cable length between the filter and the drive?
A: Rockwell Automation recommends the filter be mounted as close to the drive input terminals as possible — ideally within 300 mm — to prevent re-radiation of filtered noise. The 1336-RFB series is designed for direct chassis mounting to enforce this constraint.
Q: Does the filter affect drive performance or output frequency range?
A: No. The 1336-RFB-30-A-4 is a passive LC filter on the AC input side only. It has no effect on the drive’s output voltage, frequency range, or control response.
Q: What warranty applies to this part?
A: Konmask provides a 12-month warranty against defects in materials and workmanship from the date of shipment. Warranty claims are processed within 5 business days upon receipt of the returned unit.
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