Product Description:

The 09.BR.100-1100 is a braking resistor manufactured by KEB as part of the BR Braking Resistors series. Installed on the DC link of an inverter or servo drive, the unit dissipates regenerative energy as heat whenever a motor decelerates, keeping the bus voltage within the drive’s allowable range and protecting power semiconductors from overvoltage. This allows the connected drive system to handle repeated braking events without sending excess energy back into the power stage.

This model presents a resistance value of 100 Ω, which affects the current flowing during each braking event. Its continuous thermal rating is 82 W, meaning the resistor can dissipate that amount of power indefinitely without exceeding its steady-state temperature limit. When short, high-energy stops occur, the device tolerates a peak load of 1500 W for up to 6 s; after this interval, duty-cycle pauses are required so the element cools back toward its baseline. The component is designed for systems in the 230 V voltage class, so its ohmic value and insulation spacing align with drives that operate on low-voltage three-phase mains.

The aluminum enclosure carries an IP60 ingress rating, preventing internal contact with hazardous live parts while permitting convection cooling through the ventilated housing. A built-in thermojunction opens at 160 °C, signaling the drive to reduce regeneration if the resistor overheats; its normally closed contact is specified to handle control circuits up to 250 VAC / 0.5 A. Reliable operation is maintained from -40 °C to the specified ceiling of 45 °C, ensuring the earlier continuous and peak power figures remain valid across common automation environments. The unit uses a single heating module, AWG-14 leads with 2.5 mm² conductors, and a normally closed contact for straightforward integration into compatible drive circuits.