Head shape sorts the Sonesse ULTRA 50 range before torque does. Reference 1002560 carries a round head, and a round head takes a different bracket and a different drive arrangement than the star head version of the same 6 Nm motor. Miss that letter pair in the part name and the shade sits on the bench waiting for hardware.
Somfy built the Sonesse ULTRA platform for interior shading where sound matters more than speed. This motor runs at 38 dB. Reference 1002560 pairs that acoustic performance with standard 4-wire control, which means a wired rocker switch, a keyed switch or a relay output drives it with no radio receiver in the path.
Round head versus star head on the same 506A2
Somfy sells the 506A2 in both head styles. The star head version indexes into a square or splined bracket cutout. The RH version ends in a round boss that seats into a round-head bracket and locks with a clip. Installers pick the head to match the bracket system already specified for the job, or they pick the bracket to match a motor already on the shelf.
Round head suits two situations. Shade shops standardizing on Somfy LT50 universal brackets order RH so one bracket part number covers the whole wall. Retrofit crews replacing a failed round-head motor keep the existing brackets and swap the motor alone. The Somfy LT50 Universal Motor Bracket (9410665) appears on Somfy's own accessory list against this reference, which settles the bracket question for most jobs.
Shades a 6 Nm Sonesse ULTRA drives
Six newton meters at 24 rpm covers interior roller shades, sheer horizontal shades, Roman shades and wide blackout panels. The torque figure sets the limit on fabric weight and tube length together, so a heavy blackout on a 2.5 in tube reaches that ceiling sooner than a light screen on the same tube.
The Sonesse ULTRA platform also supports multi-banding. One motor carries up to six shades on a shared tube, which keeps a wide window opening in a single sweep instead of a stack of separate shades fighting to stay level. Conference rooms, hotel suites and bedroom walls get this treatment often. The quiet rating is the reason: a motor at 38 dB stays under the noise floor of an occupied room.
Verified specs for reference 1002560
| Somfy reference | 1002560 |
| Somfy product name | Sonesse ULTRA 506A2 RH |
| Torque / speed | 6 Nm (52 in-lb) / 24 rpm |
| Head type | Round head (RH) |
| Control | Standard 4-wire |
| Power supply | 120V AC, 60 Hz |
| Power consumption | 114 W operating |
| Standby power | 0 W |
| Sound level | 38 dB |
| Protection rating | IP 31 |
| Minimum tube inside diameter | 1.85 in |
| Overall length | 31.3 in (795 mm) |
| Warranty | 5 years |
Somfy publishes the 38 dB sound level, the IP 31 rating, the 114 W operating draw and the 0 W standby figure for this reference. The 0 W standby number matters on multi-motor jobs, since a wall of twelve wired shades adds nothing to the panel load between runs.
Tube fit, drives and brackets
The motor needs 1.85 in of clear inside diameter in the tube. That rules out 1.5 in tubes and most 1.25 in roller hardware. Standard 2 in and 2.5 in aluminum roller tubes clear it with room for the crown.
Soft-clip drives carry the load between the motor and the tube. Match the drive to the tube, not to the motor: a 2 in tube takes the Somfy LT50 2" Soft Clip Drive (9206089) and a 2.5 in tube takes the Somfy LT50 2.5" Soft Clip Drive (9206041). The soft clip absorbs the start and stop shock that a rigid drive transmits into the fabric, and it holds the tube concentric so the hem bar tracks level across a long run.
Check the tube seam before ordering a drive. Extruded tubes with an internal keyway need a drive cut for that profile, and a drive that fights the keyway will bind at the first full travel.
The LT50 Universal Motor Bracket (9410665) handles 25 Nm and 126 lb, well above what a 6 Nm motor asks of it. Somfy lists this bracket against the round-head Sonesse and Sonesse ULTRA 50 references, so it covers 1002560 without an adapter.
Jobs with tight pocket depth often use the Somfy LT50 Universal Bracket with Spring Clip (9420631) instead. The spring clip holds the motor head captive during install, which frees both hands for the idler end. Shops fitting ceiling pockets from a ladder prize that detail.
Order one motor bracket and one idler bracket per shade. The idler end carries the opposite tube end on a pin or a collapsible end cap, and the two brackets need to sit at the same depth for the tube to run true.
Wiring standard 4-wire control
Four-wire control gives the motor a line conductor, a neutral, an up conductor and a down conductor. A wired switch sends 120V to the up leg or the down leg, and the motor runs while that leg stays energized. Electronic limits stop travel at the top and bottom positions regardless of how long a switch holds.
One switch drives one motor on a direct run. Driving several motors from a single switch calls for a relay or a motor control unit rated for the combined current, since paralleling 4-wire motors off one switch back-feeds the idle windings. Electricians handle the 120V side; the limit setting happens at the motor head.
Plan the cable route before the tube goes up. The motor cable exits the head end, so the junction box belongs on that side of the opening. Moving a box after drywall closes costs more than thinking about it during rough-in.
Setting limits and finishing the kit
Electronic limits on the 506A2 set from the motor head with a setting cable or the pushbutton sequence for the version supplied. Run the shade to the top position, store it, run to the bottom, store that, then cycle twice to confirm both ends land where the design calls for them. Fabric stretches over the first week on a long drop, so builders schedule a return visit to retrim the bottom limit on tall shades.
Order the Somfy Sonesse ULTRA 50 506A2 RH 120V 4-Wire Motor (1002560) with the bracket and drive that match the tube on the bench. A motor plus a bracket plus the right drive turns into a working shade in an afternoon. A motor on its own turns into a second order.
Frequently asked questions
What does RH mean on a Somfy motor part number?
RH stands for round head. The motor head ends in a round boss that seats in a round-head bracket such as the LT50 Universal Motor Bracket 9410665. Star head versions of the same motor use a splined head and a matching bracket cutout. The two heads do not interchange in a bracket, so order the head style your bracket system takes.
What tube size does the Sonesse ULTRA 506A2 RH need?
The motor needs a minimum tube inside diameter of 1.85 in. Standard 2 in and 2.5 in roller tubes clear that figure. Pair a 2 in tube with the 9206089 soft clip drive and a 2.5 in tube with the 9206041 drive, and confirm the tube has no internal keyway that would fight the drive profile.
How quiet is the Sonesse ULTRA 50 compared with a standard Sonesse?
Somfy publishes 38 dB for reference 1002560. That figure places the Sonesse ULTRA at the quiet end of the Sonesse family and makes it the pick for bedrooms, conference rooms and hotel suites where a running motor would draw attention. The damping system inside the motor earns that rating.
Can one 506A2 RH motor run more than one shade?
Yes, through multi-banding. The Sonesse ULTRA platform carries up to six shades on a shared tube from one motor, which keeps a wide opening moving as one surface. Total fabric weight and tube length still have to stay inside the 6 Nm torque rating, so size the band against the heaviest fabric in the run.
Shade Motors Direct is an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
