Somfy 550R2 120V 4-Wire Motor (1051464)
Somfy 550R2 120V 4-Wire Motor (1051464)
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LT50 550R2 wired motor -- 50 Nm heavy-duty 4-wire motor for large closures
The Somfy 550R2 4-wire is a heavy-duty LT50-series 120V wired tubular motor delivering 50 Nm of torque at 14 rpm for large rolling shutters, awnings, and exterior screens. It connects directly to wired switches and relay controls, with mechanical rapid-adjustment limits on the motor head.
Benefits
- 50 Nm (440 in-lb) of torque moves large, heavy applications
- Rapid-adjustment (RA) push buttons make limit setting fast and tool-free
- Wired 4-wire control works with wall switches and relay-based automation
- Star drive head fits the full LT50 crown and drive ecosystem
- Genuine Somfy quality, backed by a 5-year warranty
Specifications
| Torque / Speed | 50 Nm (440 in-lb) / 14 rpm |
| Control | Wired (RA), 4-wire, no radio receiver |
| Head type | Star |
| Power | 120V AC, 60 Hz |
| Cable | 4-wire SJTW |
| Limit type | Mechanical, rapid-adjustment push buttons |
| Warranty | 5 years |
Compatible with: LT50 / 500 Series tubes, crowns, drives, and brackets
Official Somfy documentation
Sold by ShadeMotorsDirect -- an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
Common questions
What is the 550R2 4-wire motor used for?
Part 1051464 is a heavy-duty wired LT50 motor that Somfy lists for awnings and rolling shutters. It has no radio receiver, so a wired switch or relay control runs it through its 4-wire hookup.
What torque and speed does it deliver?
Somfy's 550R2 50/14 rating means 50 Nm of torque at 14 rpm. That strength suits large, heavy awnings and shutters. It has a star head that fits LT50 crowns and drives.
What power does it need?
It runs on 120V/60Hz and uses 250 W in operation, with no standby draw. The motor has a 4-wire SJTW cable, and Somfy rates it IP 44.
Which switch works with it?
A wired 120V switch controls it. The Somfy Maintained Rocker Switch Kit (1800342) mounts in a single-gang box and runs one motor, or a group through a suitable relay.
Which tube hardware fits?
The 550R2 uses LT50 star-head hardware. Parts that fit include the LT50 Star Head Motor Bracket (9410651), the LT50 Universal Bracket with Spring Clip (9420631) and crown and drive sets such as the Octagonal LT50 70mm set (9012234).
Is there a radio version with the same torque?
Yes. The Altus RTS 550R2 (1038170) delivers the same 50 Nm at 14 rpm with a built-in RTS receiver, so it works with Somfy remotes, wall switches, timers and a TaHoma hub.
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How this motor compares
Verified Somfy specs for this motor and its closest alternatives.
| Specification | You're viewing
Somfy 550R2 120V 4-Wire Motor (1051464)
| 
Somfy Altus RTS 550R2 (1038170)
| 
Somfy 540R2 120V 4-Wire Motor (1049894)
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Somfy LT60 660R2 Standard 120V 4-Wire Motor (1162272)
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|---|---|---|---|---|
| Price | ||||
| Torque (Nm) | 50.0 | 50.0 | 40.0 | 60.0 |
| Speed (rpm) | 14 | 14 | 14 | 14 |
| Control | Wired 4-wire | RTS radio | Wired 4-wire | Wired 4-wire |
| Power | 120V AC | 120V AC | 120V AC | 120V AC |
| Motor family | LT50 | LT50 | LT50 | LT60 |
| What's different | The product on this page | Same size, RTS radio control | 40.0 Nm instead of 50.0 | 60.0 Nm instead of 50.0 |
| Buy | Currently viewing | View details | View details | View details |
