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Reversible Synchronous Motor - 500 RPM


Recorders, Instrumentation, Diamond machinery, Valve Actuators, Light displays, Textile machinery, Medical equipment, Air conditioning & refrigeration, Dampers, Peristaltic Pumps, Dosing Pumps, Vending machines CCTV Camera positioning, any timing and positioning Application.


MTR3b reversing synchronous motor is of the permanent magnet type with two stator windings, for single phase AC 50/60 Hz. Phase displacement of the excitation current is achieved by connecting a capacitor in parallel with one of the stator windings. The sense of rotation is determined by the resulting circular rotating field. Electrical reversal of the sense of rotation is effected by means of a single-pole changeover switch. The 12 pole rotor which has a steel shaft polished to a mirror-finish rotates in sintered bronze bearings. The motor can be provided with Mounting plate/Screw clip for fixing.

Standard Data

Motor type                    Reversible synchronous
Ambient temperature operation °C -15...+55
Ambient temperature storage °C -20...+100
Thermal class °C 105
Electrical Enclosure IP 40
Connections   Flexible Leads 22 AWG, 200mm length; ends stripped 10 mm
Sense of rotation   Indicated by lead colour (red-CW & black ACW)
Life expectancy   3 Years in continuous operation
Mounting   any position
HVT   As per standard IEC60034-1
Weight g 65
Rotor stalling   Motor can be stopped when voltage is applied, without being overheated
Rotor shaft   Hardened steel, ground and polished
Bearings   Sintered bronze, self-lubricating
External dimensions   dia. 36x 21.5 mm


Technical Data

Standard Motor Voltages(V ) V 12 24 48 110 230*
Operation capacitor(50 Hz)C pF/VAC 15/ 20 3.9/ 50 1.0/ 100 0.22/ 200 With add on units
Operation capacitor (60Hz) C• pF/VAC 15/ 20 3.9/ TO 1.0/ 100 0.22/ 200  
Lead colour (V )   Grey Blue Brown White White
Tolerance of voltage % -10...+15% of rated voltage
Duty cycle % 100
Rated frequency Hz   50 60
Power output at rated voltage W   0.39 0.45
Speed Rpm   500 600
Running torque at rated voltage Ncm   0.65 0.6
Power consumption at rated voltage W   1.5 1.5
Detent Torque Ncm   0.25    

Dimensional Drawing