Product Description:

The 09.03.100-0241 brake is manufactured by KEB as part of the Combistop Spring Brakes series and functions as an electromagnetically released spring brake for industrial axes. When the coil is energized, the brake disengages; when power is removed, the internal springs generate holding force to secure servo motors, gearboxes, or conveyors in position. This fail-safe arrangement provides reliable stopping and holding without complex hydraulic locks or mechanical latches. The operating principle is suitable for equipment that must remain stationary during a power interruption or controlled shutdown.

The coil is rated for a supply of 24 V DC, and the allowable line variation is ±10%, so a standard control-panel supply can power the brake directly. At 20 °C, the winding draws 1.46 A and has a cold resistance of 16.46 ohms. These electrical values help determine the appropriate wiring, fuses, and driver transistors for the brake circuit. The copper loss under these conditions is 35 W, which indicates the amount of heat that must be removed during continuous operation. The magnetic circuit has an inductance of 0.9 H, so the opening delay caused by current decay should be considered when the application requires short cycle times.

A cast housing with a round flange mounting pattern simplifies installation on servo adapters, while an outside diameter of 150 mm establishes the required mating surface. The brake provides a rated holding torque of 65 Nm, making it suitable for mid-frame motors used in packaging, indexing, or woodworking machines. Continuous operation is supported by an S1 / 100% duty classification, indicating that the coil can remain energized indefinitely without exceeding its permitted thermal rise. During a power loss or emergency stop, the springs apply the brake as the magnetic field collapses. The mounting surface must provide proper alignment so the brake can engage evenly and transfer its holding torque without excessive wear.