Brake Motor Series

Brake & Marine Motors

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ATT Brake Motor Series are made to efficiently perform braking duties. Our team can fully customize these brake motors according to the customer’s different requirements.


Our selection of brake motors can also be used in marine industries for winches and other purposes.The electro-magnetic disc brake is powered, by either DC current through a rectifier located in terminal box or three phase AC current. When the brake coil is de-energised, the brake is actuated by spring pressure. The axial movement of the brake disc performs a dual braking action against the moving electromagnet and the motor shield, without pressure or impact being transmitted to the bearings.

STANDARD SPECIFICATIONS

ItemStandard Specifications
Type of MotorSquirrel Cage Cast Iron / Aluminium Induction Brake Motor
Design StandardIEC 60034-1
Framesize80-315L
Voltage and FrequencyStandard stock available are:
220-240/380-415V/50Hz for 2.2 KW & below
380-415/660-720V/50Hz for 3KW & above
Other voltages & frequency such as 200V, 346V, 440V & 60Hz can be supplied on request
Power Conditions± 5% of rated voltage; ± 1% frequency and ± 1% phase unbalance
Efficiency StandardIE1 / IE2 / IE3 (IEC 60034-30-1)
Time DutyContinuous S1
Cooling MethodFull voltage direct on line starting or star-delta starting
Method of StartingFull voltage direct on line starting or star-delta starting
Insulation & Temperature Rise ClassClass F insulation and Class B temperature rise
Degree of ProtectionIP55
Rotor WindingSquirrel cage, aluminium conductor with end-ring and wafter blades integrally cast
Environmental ConditionsPlace: Non-hazardous, shaded
Ambient temperature: -20°C to 40°C
Relative humidity: Less than 90% relative humidity (non-condensation)
Altitude: Up to 1,000 metres above sea level
Direction of RotationStandard motors are suitable for operation in either direction of rotation of shaft.
Direction of rotation can be reversed by interchanging any two of the power lines.
Test ProcedureIEC and full voltage measuring starting operation
Fan CoverPressed steel
ShaftCarbon Steel, round shaft with key
BearingGrease pre-packed shielded ball bearing
LubricationLithium-base grease (Shell Alvania R3)
PaintingPhenolic rust-proof base plus lacquer surface finish. Painting in ATT Blue
Ground TerminalNE set inside the terminal box



Other Options Available (Contact ATT to inquire for other options) 
VSD DrivenInverter duty motor suitable for VSD operation
HeatersSpace heaters (110V/220V/1ph) or winding heaters available on request
Thermal ProtectionPTC thermistor 150°C; Bearing & Winding RTD
Brake Accessories Manual hand release / Wheel release / Bolt release
RectifierCan operate within 10% voltage variations; compact, can be installed in main T-Box
ShaftDouble ended shaft; Special shaft
Insulation ClassClass H
Degree of ProtectionUp to IP66

MOUNTINGS

The table below contains the various types of mounting available for Brake Motor Series. If you are unable to find the dimensions to the mounting you prefer, please contact us for the outlining dimensions

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