TBM 1.2-40-W1/115V Bosch Rexroth Indramat
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MPN: R911230590
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The TBM 1.2-40-W1/115V is part of the TBM Bleeder Modules series from Bosch Rexroth Indramat and operates with a continuous bleeder power of 1 kW and a peak bleeder power of 40 kW. This module uses internal air cooling and is designed for a blower voltage of 115 VAC. Its dimensions are 390 mm in height, 208 mm in width, and 105 mm in depth.
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Product Description:
The TBM 1.2-40-W1/115V bleeder module is produced by Bosch Rexroth Indramat for the TBM Bleeder Modules series. It attaches to the DC bus of drive controllers and converts surplus regenerative energy into thermal losses so the link voltage stays within limits during braking or emergency stops. When a moving axis decelerates, the module absorbs returned energy that would otherwise raise bus voltage and interrupt drive operation. This function protects power electronics, helps stabilize the supply, and supports controlled stopping in machining centers, material-handling axes, and other servo applications.
The blower operates from 115 VAC, so the unit can be powered from a standard single-phase utility branch. During routine stops, the resistor bank dissipates 1 kW continuously without exceeding its steady-state temperature rise, while short braking events can be absorbed at up to 40 kW for rapid deceleration of high-inertia loads. Heat is removed by internal air cooling, with the fan pushing air through the housing instead of depending on an external duct. This airflow carries heat away from the resistor surfaces and helps maintain stable thermal behavior during repeated braking cycles. Power enters the resistor terminals through conductors up to 6 mm², which provides suitable current-carrying capacity for peak load duty.
The steel enclosure measures 105 mm deep, 208 mm wide, and 390 mm high, which suits standard 19-inch cabinet rows and leaves room for nearby drive modules. Bosch Rexroth specifies 80 mm of free space above the top edge so the blower exhaust can move upward without obstruction. Control signals, including thermal sensor leads, connect on screw terminals sized for 2.5 mm² conductors, allowing common panel wiring without special adapters. The enclosure shape supports orderly wire routing and keeps airflow paths clear when the module is installed with other cabinet-mounted power components. This layout also leaves space for adjacent bus bars and ventilation paths.
Frequently Asked Questions about TBM 1.2-40-W1/115V:
Q: What is the required blower voltage for the TBM 1.2-40-W1/115V module?
A: This bleeder module is designed to operate with a blower voltage of 115 VAC.
Q: What is the continuous bleeder power rating of the TBM 1.2-40-W1/115V?
A: The TBM 1.2-40-W1/115V supports continuous bleeder power up to 1 kW for handling ongoing energy dissipation.
Q: What is the peak bleeder power capability of the TBM 1.2-40-W1/115V module?
A: This model can handle a peak bleeder power of 40 kW for short-term energy absorption.
Q: What is the cooling mode used in the TBM 1.2-40-W1/115V bleeder module?
A: The TBM 1.2-40-W1/115V uses air cooling with an internal blower for temperature regulation.
Q: What is the maximum power connection size for the TBM 1.2-40-W1/115V?
A: The maximum power connection supported by this module is 6 mm² for secure electrical installation.
