HLT01.1A-300K-N-010-NNNN Bosch Rexroth Indramat
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MPN: R911329266
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The Bosch Rexroth Indramat HLT01.1A-300K-N-010-NNNN is part of the HLT Braking Units series and features PELV galvanic isolation and Class 1 protection. It offers IP31 protection at the front and sides, IP20 on top, and IP00 at the bottom, and supports installation elevations up to 1000 meters with 95% maximum relative humidity. The braking unit meets climate class 3K3, shock class 3M2 with 4 g shock resistance for 11 milliseconds, and handles vibration of 1.5 mm up to 10 Hz and 0.6 g up to 200 Hz.
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Product Description:
The HLT01.1A-300K-N-010-NNNN is a braking unit produced by Bosch Rexroth Indramat within the HLT Braking Units series. In regenerative drive systems, this module converts surplus kinetic energy into heat so the DC bus voltage stays within safe limits. It mounts inside control cabinets that already contain Indramat power sections, giving the installation a protective element against overvoltage during fast deceleration or vertical load lowering.
The unit is approved for installation up to 1000 m above sea level; beyond that height, its continuous power capacity decreases by 1% per 100 m. Dust-tight sealing is not required, so the base side is rated IP00, while operator-side access maintains IP31 to block tools larger than 2.5 mm and dripping water. Top ventilation slots meet IP20, so fingers cannot reach live parts while airflow remains unrestricted for heat dissipation. Protective earth and control circuits are separated by PELV galvanic isolation, and the product follows Protection Class 1 requirements that route fault current directly to cabinet ground. The climate classification is 3K3, which covers permissible temperature and humidity gradients during operation.
Moisture exposure is limited to 95% relative humidity without condensation, making the device suitable for humid production areas. The unit withstands a shock resistance of 4 g for 11 ms within Shock Class 3M2, and it handles a vibration load of 0.6 g between 10 and 200 Hz plus 1.5 mm amplitude between 3 and 10 Hz under Vibration Class 3M3. These limits help the braking resistor and control electronics remain electrically stable when the cabinet experiences transport jolts or continuous machine vibration. The enclosure ratings, altitude limit, and mechanical tolerances should be matched with a suitable cabinet installation environment.
Frequently Asked Questions about HLT01.1A-300K-N-010-NNNN:
Q: What protection class is assigned to the HLT01.1A-300K-N-010-NNNN braking unit?
A: The HLT01.1A-300K-N-010-NNNN braking unit is equipped with Class 1 protection, providing safety in connected electrical installations.
Q: What is the maximum install altitude for the HLT01.1A-300K-N-010-NNNN before derating is needed?
A: This braking unit is designed to operate at installation altitudes up to 1000 meters before derating is required.
Q: What is the front/lateral IP protection rating of the HLT01.1A-300K-N-010-NNNN?
A: The front and lateral surfaces of the unit have an IP31 rating, offering basic protection against solid objects and dripping water.
Q: What climate class does the HLT01.1A-300K-N-010-NNNN conform to?
A: The HLT01.1A-300K-N-010-NNNN meets Climate Class 3K3, making it suitable for environments with up to 95% relative humidity.
Q: What type of galvanic isolation is used in the HLT01.1A-300K-N-010-NNNN braking unit?
A: This model features galvanic isolation with PELV, enhancing electrical safety for users and equipment.
