Somfy LT50: All Models & Specs

Overview

Variant suffixes

RTS: Somfy's one-way radio control system (433.42 MHz): the motor receives commands but does not report its position back.
RS-485: Wired RS-485 serial control interface.

OpenAxia glossary note — editorial explanation, not a sourced claim.

Models

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Models in this series
Model	Part no.	Control protocol	Torque	Rated power input	Standby power	Rated current	Cable length	Rated speed	Short-time duty (S2)	Limit range	Control protocol	Radio range	Operating temp. (min)	Operating temp. (max)	Noise level	Rated torque
Somfy LT50 506S2 6/38 SJTW	1033401	—	6 Nm	80 W	0 W	0.95 A	2 m	38 rpm	5 min	—	—	—	-10 °C	60 °C	55 dB(A)	6 Nm
Somfy LT50 510R2 10/14 SJTW	1038172	—	10 Nm	80 W	0 W	—	—	14 rpm	—	—	—	—	—	—	45 dB(A)	10 Nm
Somfy LT50 510S2 10/38 SJTW	1038171	—	10 Nm	150 W	0 W	1.3 A	2 m	38 rpm	5 min	—	—	—	-10 °C	60 °C	56 dB(A)	10 Nm
Somfy LT50 515A2 15/20 SJTW	1040063	—	15 Nm	130 W	0 W	1.1 A	2 m	20 rpm	5 min	—	—	—	-10 °C	60 °C	—	15 Nm
Somfy LT50 515S2 15/38 RH SJTW	1040061	—	15 Nm	210 W	0 W	—	2 m	38 rpm	5 min	—	—	—	-10 °C	60 °C	60 dB(A)	15 Nm
Somfy LT50 515S2 15/38 SJTW	1040062	—	15 Nm	210 W	0 W	1.8 A	2 m	38 rpm	5 min	—	—	—	-10 °C	60 °C	56 dB(A)	15 Nm
Somfy LT50 515S2 RS485	1002427	RS-485	15 Nm	210 W	0.5 W	1.8 A	3 m	—	4 min	300 turns	RS-485	—	-20 °C	60 °C	55 dB(A)	15 Nm
Somfy LT50 520R2 20/14 SJTW	1042055	—	20 Nm	130 W	0 W	1.1 A	2 m	14 rpm	5 min	—	—	—	-10 °C	60 °C	48 dB(A)	20 Nm
Somfy LT50 525A2 25/20 SJTW	1043424	—	25 Nm	180 W	0 W	1.6 A	2 m	20 rpm	5 min	—	—	—	-10 °C	60 °C	56 dB(A)	25 Nm
Somfy LT50 525A2 RTS CMO	1043426	RTS	25 Nm	180 W	0 W	1.6 A	3.6 m	20 rpm	—	34 turns	RTS	50 m	-10 °C	40 °C	—	25 Nm
Somfy LT50 530R2 30/14 SJTW	1045793	—	30 Nm	170 W	0 W	1.5 A	2 m	14 rpm	5 min	—	—	—	-10 °C	60 °C	55 dB(A)	30 Nm
Somfy LT50 530R2 RTS CMO	1051476	RTS	30 Nm	170 W	0 W	1.5 A	1.8 m	14 rpm	—	34 turns	RTS	—	-10 °C	40 °C	—	30 Nm
Somfy LT50 535A2 35/20 SJTW	1047368	—	35 Nm	250 W	—	—	—	20 rpm	—	—	—	—	—	—	—	35 Nm
Somfy LT50 535A2 RTS CMO	1047306	RTS	35 Nm	250 W	0 W	2.1 A	3.6 m	20 rpm	—	34 turns	RTS	—	-10 °C	40 °C	—	35 Nm
Somfy LT50 535A2 RS485	1002288	RS-485	35 Nm	250 W	0.5 W	2.1 A	3 m	—	4 min	300 turns	RS-485	—	-20 °C	60 °C	55 dB(A)	35 Nm
Somfy LT50 540R2 40/14 SJTW	1049894	—	40 Nm	210 W	0 W	1.8 A	2 m	14 rpm	5 min	—	—	—	-10 °C	60 °C	55 dB(A)	40 Nm
Somfy LT50 540R2 RTS CMO	1051477	RTS	40 Nm	210 W	0 W	1.8 A	1.8 m	14 rpm	—	34 turns	RTS	200 m	-10 °C	40 °C	—	40 Nm
Somfy LT50 550R2 50/14 SJTW	1051464	—	50 Nm	250 W	0 W	2.1 A	2 m	14 rpm	5 min	—	—	—	-10 °C	60 °C	—	50 Nm
Somfy LT50 550R2 RTS CMO	1051466	RTS	50 Nm	250 W	0 W	2.1 A	1.8 m	14 rpm	—	34 turns	RTS	200 m	-10 °C	40 °C	—	50 Nm
Somfy LT50 525A2 CMO	1043010	—	—	180 W	0 W	—	—	—	—	—	—	—	—	—	—	—
Somfy LT50 530R2 CMO	1045017	—	—	170 W	0 W	—	—	—	—	—	—	—	—	—	—	—
Somfy LT50 535A2 CMO	1047006	—	—	250 W	0 W	—	—	—	—	—	—	—	—	—	—	—
Somfy LT50 540R2 CMO	1049026	—	—	210 W	0 W	—	—	—	—	—	—	—	—	—	—	—
Somfy LT50 550R2 CMO	1051014	—	—	250 W	0 W	—	—	—	—	—	—	—	—	—	—	—

— means no value: the manufacturer does not publish it, it does not apply to this product type, or there is none on record. Value states

Show all 24 model links

Missing a variant or part number? Manufacturers can update this series.

Source: manufacturer documents (4). Last checked 2026-10-29. All sources (4) · Learn more about this data

Sources

↑Somfy PDF catalogue lt50ra-d0025service.somfy.comRated torque: Torque: 6 Nm [1032023] (p. 1)Manufacturer-stated · Observed 2026-10-07 · Retrieved 2026-10-06 · Public web pageUsed for: 506S2 6/38 SJTW rated torque, 506S2 6/38 SJTW rated current, 510S2 10/38 SJTW rated current, 515A2 15/20 SJTW rated current, 515S2 15/38 SJTW rated current, 520R2 20/14 SJTW rated current, 525A2 25/20 SJTW rated current, 530R2 30/14 SJTW rated current, 540R2 40/14 SJTW rated current, 550R2 50/14 SJTW rated current, 506S2 6/38 SJTW cable length, 510S2 10/38 SJTW cable length, 515A2 15/20 SJTW cable length, 515S2 15/38 RH SJTW cable length, 515S2 15/38 SJTW cable length, 520R2 20/14 SJTW cable length, 525A2 25/20 SJTW cable length, 530R2 30/14 SJTW cable length, 540R2 40/14 SJTW cable length, 550R2 50/14 SJTW cable length, 506S2 6/38 SJTW rated speed, 510S2 10/38 SJTW rated speed, 515A2 15/20 SJTW rated speed, 515S2 15/38 SJTW rated speed, 520R2 20/14 SJTW rated speed, 525A2 25/20 SJTW rated speed, 530R2 30/14 SJTW rated speed, 540R2 40/14 SJTW rated speed, 550R2 50/14 SJTW rated speed, 506S2 6/38 SJTW short-time duty (s2), 510S2 10/38 SJTW short-time duty (s2), 515A2 15/20 SJTW short-time duty (s2), 515S2 15/38 RH SJTW short-time duty (s2), 515S2 15/38 SJTW short-time duty (s2), 520R2 20/14 SJTW short-time duty (s2), 525A2 25/20 SJTW short-time duty (s2), 530R2 30/14 SJTW short-time duty (s2), 540R2 40/14 SJTW short-time duty (s2), 550R2 50/14 SJTW short-time duty (s2), 506S2 6/38 SJTW operating temp. (min), 510S2 10/38 SJTW operating temp. (min), 515A2 15/20 SJTW operating temp. (min), 515S2 15/38 RH SJTW operating temp. (min), 515S2 15/38 SJTW operating temp. (min), 520R2 20/14 SJTW operating temp. (min), 525A2 25/20 SJTW operating temp. (min), 530R2 30/14 SJTW operating temp. (min), 540R2 40/14 SJTW operating temp. (min), 550R2 50/14 SJTW operating temp. (min), 506S2 6/38 SJTW operating temp. (max), 510S2 10/38 SJTW operating temp. (max), 515A2 15/20 SJTW operating temp. (max), 515S2 15/38 RH SJTW operating temp. (max), 515S2 15/38 SJTW operating temp. (max), 520R2 20/14 SJTW operating temp. (max), 525A2 25/20 SJTW operating temp. (max), 530R2 30/14 SJTW operating temp. (max), 540R2 40/14 SJTW operating temp. (max), 550R2 50/14 SJTW operating temp. (max), 506S2 6/38 SJTW noise level, 510S2 10/38 SJTW rated torque, 515A2 15/20 SJTW rated torque, 515S2 15/38 SJTW rated torque, 520R2 20/14 SJTW rated torque, 525A2 25/20 SJTW rated torque, 530R2 30/14 SJTW rated torque, 540R2 40/14 SJTW rated torque, 550R2 50/14 SJTW rated torque
↑Somfy PDF catalogueservice.somfy.comRated torque: Torque: 50 Nm [1051012] (p. 1)Manufacturer-stated · Observed 2026-10-07 · Retrieved 2026-10-06 · Public web pageUsed for: 550R2 RTS CMO rated torque, 525A2 RTS CMO rated current, 530R2 RTS CMO rated current, 535A2 RTS CMO rated current, 540R2 RTS CMO rated current, 550R2 RTS CMO rated current, 525A2 RTS CMO cable length, 530R2 RTS CMO cable length, 535A2 RTS CMO cable length, 540R2 RTS CMO cable length, 550R2 RTS CMO cable length, 525A2 RTS CMO rated speed, 530R2 RTS CMO rated speed, 535A2 RTS CMO rated speed, 540R2 RTS CMO rated speed, 550R2 RTS CMO rated speed, 525A2 RTS CMO limit range, 530R2 RTS CMO limit range, 535A2 RTS CMO limit range, 540R2 RTS CMO limit range, 550R2 RTS CMO limit range, 525A2 RTS CMO operating temp. (min), 530R2 RTS CMO operating temp. (min), 535A2 RTS CMO operating temp. (min), 540R2 RTS CMO operating temp. (min), 550R2 RTS CMO operating temp. (min), 525A2 RTS CMO operating temp. (max), 530R2 RTS CMO operating temp. (max), 535A2 RTS CMO operating temp. (max), 540R2 RTS CMO operating temp. (max), 550R2 RTS CMO operating temp. (max), 525A2 RTS CMO rated torque, 530R2 RTS CMO rated torque, 535A2 RTS CMO rated torque, 540R2 RTS CMO rated torque
↑Somfy Systems (North America) manufacturer site (product catalog)somfysystems.comPart number: Ref. : 1033401Manufacturer-stated · Observed 2026-09-30 · Retrieved 2026-09-30 · Public web pageUsed for: 506S2 6/38 SJTW part no., 510R2 10/14 SJTW part no., 510S2 10/38 SJTW part no., 515A2 15/20 SJTW part no., 515S2 15/38 RH SJTW part no., 515S2 15/38 SJTW part no., 515S2 RS485 part no., 520R2 20/14 SJTW part no., 525A2 25/20 SJTW part no., 525A2 RTS CMO part no., 530R2 30/14 SJTW part no., 530R2 RTS CMO part no., 535A2 35/20 SJTW part no., 535A2 RTS CMO part no., 535A2 RS485 part no., 540R2 40/14 SJTW part no., 540R2 RTS CMO part no., 550R2 50/14 SJTW part no., 550R2 RTS CMO part no., 525A2 CMO part no., 530R2 CMO part no., 535A2 CMO part no., 540R2 CMO part no., 550R2 CMO part no., 506S2 6/38 SJTW rated power input, 510R2 10/14 SJTW rated power input, 510S2 10/38 SJTW rated power input, 515A2 15/20 SJTW rated power input, 515S2 15/38 RH SJTW rated power input, 515S2 15/38 SJTW rated power input, 515S2 RS485 rated power input, 520R2 20/14 SJTW rated power input, 525A2 25/20 SJTW rated power input, 525A2 RTS CMO rated power input, 530R2 30/14 SJTW rated power input, 530R2 RTS CMO rated power input, 535A2 35/20 SJTW rated power input, 535A2 RTS CMO rated power input, 535A2 RS485 rated power input, 540R2 40/14 SJTW rated power input, 540R2 RTS CMO rated power input, 550R2 50/14 SJTW rated power input, 550R2 RTS CMO rated power input, 525A2 CMO rated power input, 530R2 CMO rated power input, 535A2 CMO rated power input, 540R2 CMO rated power input, 550R2 CMO rated power input, 506S2 6/38 SJTW standby power, 510R2 10/14 SJTW standby power, 510S2 10/38 SJTW standby power, 515A2 15/20 SJTW standby power, 515S2 15/38 RH SJTW standby power, 515S2 15/38 SJTW standby power, 515S2 RS485 standby power, 520R2 20/14 SJTW standby power, 525A2 25/20 SJTW standby power, 525A2 RTS CMO standby power, 530R2 30/14 SJTW standby power, 530R2 RTS CMO standby power, 535A2 RTS CMO standby power, 535A2 RS485 standby power, 540R2 40/14 SJTW standby power, 540R2 RTS CMO standby power, 550R2 50/14 SJTW standby power, 550R2 RTS CMO standby power, 525A2 CMO standby power, 530R2 CMO standby power, 535A2 CMO standby power, 540R2 CMO standby power, 550R2 CMO standby power, 510R2 10/14 SJTW rated speed, 515S2 15/38 RH SJTW rated speed, 535A2 35/20 SJTW rated speed, 525A2 RTS CMO radio range, 540R2 RTS CMO radio range, 550R2 RTS CMO radio range, 510R2 10/14 SJTW noise level, 515S2 15/38 RH SJTW noise level, 520R2 20/14 SJTW noise level, 525A2 25/20 SJTW noise level, 530R2 30/14 SJTW noise level, 540R2 40/14 SJTW noise level, 510R2 10/14 SJTW rated torque, 515S2 15/38 RH SJTW rated torque, 535A2 35/20 SJTW rated torque
↑Somfy PDF catalogue lt50rs485-d0034service.somfy.comRated current: Rated Current: 1.8A [1002427] (p. 1)Manufacturer-stated · Observed 2026-10-06 · Retrieved 2026-10-06 · Public web pageUsed for: 515S2 RS485 rated current, 535A2 RS485 rated current, 515S2 RS485 cable length, 535A2 RS485 cable length, 515S2 RS485 short-time duty (s2), 535A2 RS485 short-time duty (s2), 515S2 RS485 limit range, 535A2 RS485 limit range, 515S2 RS485 operating temp. (min), 535A2 RS485 operating temp. (min), 515S2 RS485 operating temp. (max), 535A2 RS485 operating temp. (max), 515S2 RS485 noise level, 535A2 RS485 noise level, 515S2 RS485 rated torque, 535A2 RS485 rated torque

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