Product Description:

The HZF01.1-W025N is a passive filter module from Bosch Rexroth Indramat in the HZF Filter Modules series. Installed between the mains supply and the DC bus of drive controllers, the device limits conducted electromagnetic noise and absorbs switching transients produced by power electronics. By lowering emissions, it helps protect nearby instrumentation and preserve signal integrity in motion-control loops used in packaging, printing, and material-handling cells. Because the module is passive, it performs this conditioning function without separate control electronics.

Its continuous nominal current capacity is 45 A, allowing the module to serve medium-power converter stacks without forced cooling at standard altitude. Baseline dissipation amounts to 150 W, and this heat must be removed by enclosure airflow even when the drives are idle. Under motoring conditions, additional loss appears at a specific rate of 6.0 W/kW, which makes cabinet heat load dependent on the connected drive power. The metal housing carries an IP10 designation, providing finger protection but no dust seal, so installation inside a closed control cabinet is required. Application sites up to 4000 m above sea level are supported, though current must be derated beyond 1000 m because thinner air reduces convection. At full rating, total loss may reach 300 W, and conductor cross-sections at terminals X5, X6, and X8 must be selected accordingly.

A maximum air moisture content of 25 g/m3 helps prevent condensation on energized coils. After derating, the cabinet temperature must not exceed 55 °C to protect insulation and maintain stable filter performance. Transport and in-service shock tolerance is 10 g/11 ms, allowing the filter to withstand vibration on gantry frames or mobile platforms. Its mass of 22 kg requires rigid mounting rails and supports stable mechanical installation inside the cabinet.