Somfy 520R2 120V 4-Wire Motor (1042055)
Somfy 520R2 120V 4-Wire Motor (1042055)
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Somfy LT50 520R2 120V 4-Wire Motor -- standard exterior tubular motor
The Somfy LT50 520R2 is a 120V AC standard 4-wire star head tubular motor from the 500 Series. It delivers 20Nm (176" lb) of torque at 14 rpm, wired for control from a switch or third-party relay rather than radio.
Benefits
- Standard 4-wire star head motor -- control from a wired switch or third-party relay
- Mechanical limit switch with 46-turn capacity
- 9.84 ft SJTW 4-wire power cable
- Fits roller tubes with a 1.85 in minimum internal diameter
- IP 44 protection
- 5-year Somfy warranty
Specifications
| Torque / Speed | 20 Nm (176 in-lb) / 14 rpm |
| Control | Standard 4-wire (wired switch or relay) |
| Power supply | 120V AC, 60Hz, 1.1 A rated current |
| Limit switch | Mechanical, 46-turn capacity |
| Cable | SJTW 4-wire, 9.84 ft |
| Minimum tube internal diameter | 1.85 in |
| Head type | Star head |
| Protection | IP 44 |
| Warranty | 5 years |
Compatible with: LT50 crown and drive sets, LT50 motor brackets, SJTW 4-wire motor cables
Official Somfy documentation
Sold by ShadeMotorsDirect -- an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
Common questions
What torque and speed does the 520R2 deliver?
Somfy rates part 1042055 at 20 Nm of torque and 14 rpm. It is an LT50 standard 4-wire motor with a star head. If the load needs more lift, the 525A2 (1043424) delivers 25 Nm at 20 rpm.
What roller tube does it fit?
Somfy lists a 1.85 in minimum tube internal diameter and a 1.77 in motor body. Pair it with LT50 crown and drive hardware, such as the Octagonal LT50 60MM Crown/Drive Set (9012233) or the LT50 DS78MM Crown/Drive Set (9012239).
How is it powered and wired?
It runs on 120V/60Hz AC with a rated current of 1.1 A, drawing 130 W in operation and 0 W in standby. A removable 9.84 ft SJTW 4-conductor cable connects it to a wired switch or relay.
How are the limits set, and what is it rated for?
A mechanical limit switch with a 46-turn capacity sets the travel. Somfy rates the motor IP 44, with a working range of -13 °F to 158 °F and a noise level of 48 dB. It carries a 5-year Somfy warranty.
Which motor brackets work with the star head?
The Somfy LT50 Star Head Motor Bracket (9410651) and the LT50 Universal Bracket with Spring Clip (9420631) both fit this motor. Choose the one that suits the mounting surface and the hardware on the idler end.
Can I run it from a remote or wall switch?
Yes. Wire it to a wall switch, or add a Somfy Universal RTS Receiver (1810627) for radio control from 110V AC. With the receiver, the motor pairs with Somfy RTS controls such as Telis and Situo remotes and DecoFlex RTS wall switches.
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How this motor compares
Verified Somfy specs for this motor and its closest alternatives.
| Specification | You're viewing
Somfy 520R2 120V 4-Wire Motor (1042055)
| 
Somfy 515A2 120V 4-Wire Motor (1040063)
| 
Somfy 525A2 120V 4-Wire Motor (1043424)
| 
Somfy 515S2 120V 4-Wire Motor (1040062)
|
|---|---|---|---|---|
| Price | ||||
| Torque (Nm) | 20.0 | 15.0 | 25.0 | 15.0 |
| Speed (rpm) | 14 | 20 | 20 | 38 |
| Control | Wired 4-wire | Wired 4-wire | Wired 4-wire | Wired 4-wire |
| Power | 120V AC | 120V AC | 120V AC | 120V AC |
| Motor family | LT50 | LT50 | LT50 | LT50 |
| What's different | The product on this page | 15.0 Nm instead of 20.0 | 25.0 Nm instead of 20.0 | 15.0 Nm instead of 20.0 |
| Buy | Currently viewing | View details | View details | View details |
