Overview
The Allen-Bradley 1336-MOD-KB050 /D is a heavy-duty dynamic braking unit designed to work with 1336 and 1336VT series adjustable frequency AC drives. This used surplus module provides automatic control of regenerative energy and prevents DC bus overvoltage that commonly causes drive faults. It is suitable for industrial automation systems requiring rapid motor deceleration with minimal thermal impact on drive electronics.
Key Features
- 50 HP (37 kW) rated braking power dissipation capacity
- Multi-voltage input: 380 VAC, 415 VAC, 460 VAC compatible
- Automatic DC bus voltage monitoring with intelligent activation
- NEMA Type 1 (IP20) industrial enclosure rated for harsh environments
- Brake ON and DC Power indicator lights for operational status visibility
- Internal fused protection for safe brake resistor operation
- Supports parallel configuration with additional 1336-MOD-KB units for extended capacity
Technical Specifications
- Model: 1336-MOD-KB050 (Series D)
- Brake Rating: 50 HP / 37 kW
- Compatible Drive Ratings: B040 – B060
- Input Voltage (AC): 380 / 415 / 460 VAC
- Control Voltage: 115 VAC, 1-phase, 50/60 Hz (customer supplied)
- Resistance: 10.5 Ohm (brake resistor)
- Brake Torque: 100% for 20 seconds continuous
- Power Dissipation: 7,000 watts
- Enclosure Type: NEMA Type 1 (IP20)
- Dimensions: 16 x 24 x 9.75 inches
- Weight: 33.8 kg (75 lbs)
- Operating Temperature: -10°C to +50°C
- Humidity Range: 5% to 95% non-condensing
- DC Bus Input: 680–750 VDC
- Mounting: Vertical mounting position required
Typical Applications
The 1336-MOD-KB050 is commonly deployed in:
- Conveyor systems requiring controlled rapid deceleration
- Hoist and crane drives to prevent slack-line overvoltage faults
- Centrifuge and spinning machinery with high inertia loads
- Punch press and stamping equipment with regenerative load cycles
- Machine tool spindle applications where energy recovery is essential
- Any 1336-series adjustable frequency drive system rated 40–60 where DC bus protection is required
Compatibility & Replacements
Compatible With
- Allen-Bradley 1336 FORCE AC Drives (B003-B200 models)
- Allen-Bradley 1336VT FORCE AC Drives (B003-B250 models)
- Allen-Bradley 1336 PLUS AC Drives (drive ratings B040–B060)
- Allen-Bradley 1336 PLUS II AC Drives (drive ratings B040–B060)
- Allen-Bradley 1336 IMPACT AC Drives (drive ratings B040–B060)
- 380/415/460 VAC three-phase industrial power systems
Replaces / Drop-In Replacement For
- Original equipment 1336-MOD-KB050 factory units (used surplus alternative)
- Verify exact compatibility with your system integrator or drive installer before ordering.
Works With
- Allen-Bradley PowerFlex drives (where 1336 legacy integration is maintained)
- NEMA-compliant motor control and automation systems
- EtherNet/IP capable networks for remote monitoring (via compatible 1336 drive modules)
- Industrial control systems using Rockwell Automation architecture
