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Radial Grid Dynamic Brake Assembly

Dynamic Brake Hatch Assembly

Force Cooled Roof Mounted DBR Assembly With Short Hood

Forced Cooled Roof Mounted DBR (Electric Locomotive)

Vertical Type DBR

Natural Cooled Roof Mounted DBR

Resistor Harmonic Filter

Resistor Over Voltage Protector (MUB)

Pre-Charge Resistor

Inverter Protection Resistor (IPR)

Crowbar Resistor

Oil Cooled Resistor

Pre-charge Resistor ( For WAP-7 / WAG-9 3 Phase Locomotive DU120108003 replaceable with ABB*** Part No. 3EHN424095P1250 )


It is part of the Power circuit of the Traction Convertor.

During powering up of the convertor, charging contactor is closed, so that the convertor DC link is pre-charged through the charging resistor and the diodes in the Valve Set.



Technical Details of DU120108003

Peak Surge Current

50 A


1517 VAC rms

Grid Resistance @ 20oC

50 Ω ± 10%

Power Rating

150 kWs



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