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    Somfy Maestria 50 RTS — Star Head Motor Specifications

    September 08, 2026 2 min read

    Technical specification sheet for the Somfy Maestria 50 RTS Star Head Motors (models 510A2, 525A2, 535A2, 550R2) — wireless RTS tubular motors for motorized window coverings.

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    Full text manual (for reference)

    Technical specification sheet for the Somfy Maestria™ 50 RTS Star Head Motors — wireless RTS tubular motors for motorized window coverings, covering models 510A2, 525A2, 535A2, and 550R2.

    Overview

    Radio Technology Somfy® (RTS) allows for wireless radio control of motorized window coverings via the RTS family of controls. The Maestria 50 RTS series is a Star Head tubular motor line spanning four torque/speed configurations.

    Technical Features

    Feature Specification
    Voltage Supply 120V AC, 60Hz
    Index Protection Rating IP 44
    Limit Switch Type Electronic RTS
    Limit Switch Capacity 250 turns
    Temperature Working Range 14°F to 104°F (-10°C to 40°C)
    Insulation Class Class 1 for 120V AC
    Wiring Integrated into power cord — must be at least 12 inches, must not contact metal

    Model Numbers

    Model Part Number
    510A2 1134082
    525A2 1134083
    535A2 1134084
    550R2 1134095

    Performance Specifications by Model

    Spec 510 525 535 550
    Torque 10 Nm 25 Nm 35 Nm 50 Nm
    Nominal Voltage 120V / 60Hz
    Rated Current 1.3A 1.6A 2.1A 2.1A
    Speed 20 rpm 20 rpm 20 rpm 14 rpm
    Thermal Protection 5 minutes
    Radio Frequency 433.42 MHz

    Dimensions

    Dimension 510 / 525 535 / 550
    L1 25.79 in. (655 mm) 26.57 in. (605 mm)
    L2 25.20 in. (640 mm) 25.98 in. (660 mm)
    L3 26.10 in. (663 mm) 26.89 in. (683 mm)

    Cable length: 10 ft. (3.05 m) SJTW. Motor casing: 2 mounting holes for self-tapping screws, dia. 5 mm (cat #9670013), depth 13 mm, spaced 1.89" (48 mm) apart.

    Power Cable Wiring

    RTS 120V AC / 60Hz SJTW, 3-conductor cable:

    • White = Neutral
    • Black = Hot
    • Green = Ground

    Document D-0093 · Copyright Somfy Systems, Inc., 3/2018