TBM 1.2-40-W1/115 Bosch Rexroth Indramat
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MPN: R911230590
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The Bosch Rexroth Indramat TBM 1.2-40-W1/115 is part of the TBM Bleeder Modules series and features a built-in blower with a voltage of 115 VAC. This module supports peak bleeder power of 40 kW and uses internal air cooling. It has physical dimensions of 390 mm in height, 208 mm in width, and 105 mm in depth.
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Product Description:
The TBM 1.2-40-W1/115 is a bleeder module produced by Bosch Rexroth Indramat and assigned to the TBM Bleeder Modules series. Installed alongside regenerative drive controllers, this module converts excess DC-bus energy into heat so that the attached power supply remains within safe voltage limits during motor braking or overhauling loads. By absorbing surplus energy through its internal resistor bank, the unit helps protect inverters and capacitors from overvoltage trips and supports stable motion control in industrial automation. It is intended for drive systems where repeated deceleration can return substantial energy to the power section.
At its core, the device can dissipate up to 40 kW of instantaneous power, which indicates how much regenerative energy it can safely convert without thermal overload. The resistor block is cooled by a built-in centrifugal blower that operates from a 115 VAC supply, eliminating the need for external fans. Because the blower forces air directly across the resistor surface, the cooling mode is classified as internal air, which helps keep heat removal localized inside the unit. For the main DC-link conductors, the screw terminals accept copper cable up to 10 mm², allowing low-loss connections to high-current drive stacks while keeping installation straightforward.
The module stands 390 mm tall, spans 208 mm wide, and has a depth of 105 mm, so it can be placed without occupying excessive panel depth. Control wiring for status contacts or blower monitoring is limited to 2.5 mm², which matches common signal cable sizes and simplifies terminal selection. Its compact rectangular shape leaves clearer routing paths for adjacent wiring inside the cabinet. This layout also helps keep the enclosure organized when the module is installed beside other drive components.
