Siemens 6SL3300-1AH32-5BA0 SINAMICS Braking Module
A 50 kW chassis braking module for compatible high-voltage SINAMICS power sections requiring controlled DC-link energy dissipation.
Key Information
6SL3300-1AH32-5BA0 is a Siemens SINAMICS braking module for compatible 660 to 690 V chassis Power Modules and Motor Modules in frame sizes HX and JX. It switches an external braking resistor when regenerative energy raises the DC-link voltage.
The module and resistor must be selected as one thermal system. Braking power, duty cycle, cabinet cooling, conductor sizing and the response-voltage setting all affect reliable operation.
Functions
- Connects the external braking resistor to the DC link when the configured response threshold is reached.
- Dissipates regenerative energy that cannot be returned to the supply or absorbed by the drive system.
- Provides a digital input and output for control or status integration.
- Supports threshold selection for the documented DC-link operating range.
Specifications
| Manufacturer | Siemens |
|---|---|
| Article Number | 6SL3300-1AH32-5BA0 |
| Product Family | SINAMICS S120 / G130 |
| Rated Braking Power | 50 kW |
| Peak Power for 15 s | 250 kW |
| Power for 20 s | 200 kW |
| Power for 40 s | 100 kW |
| DC-Link Operating Range | 890 to 1035 VDC |
| Response Threshold | 1153 V or 1070 V, selectable |
| Power Terminals | R1 / R2, M8 |
| Maximum Conductor Section | 50 mm² |
| Digital Interfaces | One input and one output, 24 VDC |
| Output Load | Maximum 500 mA |
| Frame Compatibility | HX and JX chassis units |
Installation
- Calculate braking energy and resistor duty from the real machine cycle before selecting the resistor.
- Isolate the supply, prove DC-link discharge and follow the prescribed mounting position and clearances.
- Route R1 and R2 conductors with suitable insulation, short-circuit protection and separation from control wiring.
- Set the response threshold for the complete drive configuration and prove braking behavior during controlled deceleration.
Lifecycle
- Inspect resistor connections, ventilation and signs of thermal stress during planned maintenance.
- Retain the braking calculation, threshold setting and machine duty cycle with the drive documentation.
- Recalculate the thermal duty after motor, load, gear ratio, cycle time or deceleration changes.
FAQ
Which drive frames accept 6SL3300-1AH32-5BA0?
It is intended for the documented 660 to 690 V SINAMICS chassis power sections in HX and JX frame sizes.
Does 6SL3300-1AH32-5BA0 include the braking resistor?
The module controls an external resistor; the resistor and its thermal duty must be selected separately.
How is the resistor for 6SL3300-1AH32-5BA0 sized?
Use the machine regenerative energy, peak power, braking duration, repetition rate, ambient temperature and allowable resistor duty cycle.
What must be checked before energizing 6SL3300-1AH32-5BA0?
Verify the DC-link is isolated, R1/R2 wiring is correct, resistor value and insulation are suitable, and the response threshold matches the system.
Can 6SL3300-1AH32-5BA0 provide continuous regenerative operation?
It is a dynamic-braking solution with defined power-time limits; continuous regeneration may require a regenerative infeed design.
What information should accompany a 6SL3300-1AH32-5BA0 request?
Send the full power-module article, mains voltage, motor data, load inertia, stop time, cycle rate, existing resistor and cabinet conditions.
