Tube diameter and curtain weight set the torque you need, and that single measurement decides whether a 20 Nm operator fits your shutter. The Somfy Simu T5 20Nm 12rpm (2000650) sits in the middle of the Simu T5 wired range, above the 15 Nm operator and under the 25 Nm. Somfy publishes it as a 120V/60Hz tubular motor for rolling shutters, awnings and exterior solar screens, with mechanical limit switches and no radio receiver inside.
Picking 20 Nm for a shutter or awning
Torque has to clear the static load of the curtain plus the friction of the guides. A 20 Nm motor on a 60 mm octagonal tube lifts a heavier curtain than the same 20 Nm on a 70 mm tube, because the larger drive diameter trades lift for travel per turn. Measure the tube before you order, then weigh the curtain or take the fabricator's figure.
Speed matters on tall openings. At 12 rpm the 2000650 moves a shutter at a measured pace, which keeps a heavy aluminum curtain from slamming into its end stops. The faster 35 rpm and 18 rpm Simu T5 operators suit shorter drops where cycle time counts for more than control. Installers replacing a failed Simu operator on an existing shutter keep the bracket, the crown and drive, and the wall switch, and swap the motor alone.
Somfy backs the T5 with a 5 year warranty and an IP 44 rating. Shutter boxes and awning hoods shelter the motor from direct rain, which IP 44 covers.
Shades and shutters this motor suits
Somfy lists the 2000650 for awnings, exterior solar screens, interior window coverings and rolling shutters. The 20 Nm rating carries most residential rolling shutter curtains in aluminum or PVC. Cassette and semi-cassette awnings of moderate projection run on it. Fixed-guide exterior screens work when the fabric and bottom bar stay inside the torque budget.
Heavier commercial shutters and wide awning arms move up to the 35 Nm or 50 Nm T5. Interior roller shades belong on a Sonesse motor instead, where Somfy engineers for quiet running rather than shutter torque. The 48 dB figure on this motor reads loud beside a Sonesse, and that is the right trade for an exterior box.
Verified specifications
| Reference | 2000650 |
| Torque / speed | 20 Nm / 12 rpm |
| Power supply | 120V / 60Hz AC |
| Rated current | 1.1 A |
| Power consumption | 130 W running, 0 W standby |
| Control | Wired, 4-wire pigtail |
| Limit switches | Mechanical, 30 turns |
| Head type | Round with pins |
| Cable | 8.2 ft (2.5 m) |
| Protection | IP 44, Class I insulation |
| Noise level | 48 dB |
| Operating temperature | -4°F to 104°F |
| Warranty | 5 years |
| Applications | Rolling shutters, awnings, exterior solar screens, interior shades |
Somfy's own product record for reference 2000650 prints the motor designation as MOTOR T5-20NM/12RPM-120/60-C2,5M WHITE, and that C2,5M segment names the 2.5 m cable. Match the reference on the motor label against the figures above before you fit parts to it.
Tube, crown and drive fit
The T5 20Nm accepts the Simu T5 crown and drive sets along with the LT50 range. Somfy lists the T5/T6 60mm Round Aluminum Drive (9012950) and the T5/T6 70mm Octagonal Aluminum Drive (9011878) for this reference, along with the 85 mm Simbac wheel and the LT50 octagonal and clip-drive sets.
Pair the crown and the drive to one tube profile. A 60 mm octagonal tube takes the 9707025 crown with the 9751001 drive wheel. A 2.5 inch round tube takes the 9707026 crown with the 9206041 soft clip drive, and a 2 inch round tube takes the 9206088 hard clip or the 9206089 soft clip. Mixed sets bind on the first cycle.
Drive wheels seat on the motor output spline and carry a stop. The Somfy Drive Stop and Screw (9910004) locks that wheel in place so the tube cannot creep off the spline under load. Fit it. A loose drive wheel chews the shaft and the warranty will not cover that.
Bracket, head and idle end
The round head with pins seats in Simu T5 operator brackets. Somfy names the Simu T5 Operator Bracket 80mm x 80mm Square (9520049) for this reference, and that square plate drops into most shutter boxes and awning hoods built around the Simu platform. Pull the old motor first and compare head plates. Simu bracket patterns changed across generations, and the pin spacing has to match.
The idle end of the tube carries its own load. A bearing or an idler end cap sized to the tube inside diameter holds that end square, and a 10 mm collapsible shaft cap covers the common LT50-style installation. Square the two ends to each other. A tube running out of parallel loads the motor bearings and raises the noise floor past the published 48 dB.
Wiring, limits and remote control
The 2000650 leaves the factory on a 4-wire pigtail: line, neutral, and two travel conductors. A wired rocker or key switch energizes one travel conductor at a time, and the switch interlock keeps both off the same pole. Have a licensed electrician land the 120V side in a junction box inside the shutter box or hood.
Mechanical limits cover 30 turns of tube travel, which spans the drop of a tall residential shutter on a 60 mm tube. You drive the curtain down, set the lower stop screw, drive it up, then set the upper stop. The motor holds both positions through a power cut because the stops are mechanical.
No receiver sits inside this motor, so an RTS remote or a Zigbee hub will not reach it on its own. An external Somfy receiver wired ahead of the switch adds remote control to a wired T5 later. Check the receiver's load rating against the 130 W draw of this motor before you specify one.
Frequently asked questions
What tube size does the Somfy Simu T5 20Nm fit?
The T5 body fits standard Simu T5 and LT50 crown and drive sets, which cover 60 mm and 70 mm octagonal tubes, 2 inch and 2.5 inch round tubes, and the 85 mm Simbac profile. Pick the crown and drive pair that matches your tube, then confirm the inside diameter against the set before fitting.
Does the 2000650 work with a Somfy RTS remote?
Not on its own. The 2000650 carries no radio receiver and takes a wired switch for up and down commands. An external Somfy RTS receiver wired upstream of the motor gives you remote control, and the receiver has to carry the 130 W running load of this motor.
How many turns of travel do the limit switches cover?
Thirty turns of tube rotation. That range covers the drop of a tall residential rolling shutter on a 60 mm tube. The limits are mechanical, set with adjustment screws on the motor head, and they hold their positions through a power outage with no reprogramming.
Which Simu T5 torque should I order for a rolling shutter?
Weigh the curtain and measure the tube, then size up from the calculated load. The 20 Nm 2000650 at 12 rpm suits most residential aluminum and PVC shutters. Lighter screens run on the 15 Nm operator, and wide commercial curtains move to the 35 Nm or 50 Nm T5.
Order the Somfy Simu T5 20Nm 12rpm (2000650) with the bracket and the crown and drive set that match your tube, and add the drive stop so the wheel stays put.
Shade Motors Direct is an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
