What supply voltage and frequency does each use?

Rated voltage — Somfy 510S2 10/38 SJTW: 120 V; Somfy 515A2 15/20 SJTW: 120 V. Mains frequency — Somfy 510S2 10/38 SJTW: 60 Hz; Somfy 515A2 15/20 SJTW: 60 Hz. Power supply type — Somfy 510S2 10/38 SJTW: AC mains; Somfy 515A2 15/20 SJTW: AC mains.

What torque and speed is each rated for?

Rated torque — Somfy 510S2 10/38 SJTW: 10 Nm; Somfy 515A2 15/20 SJTW: 15 Nm. Rated speed — Somfy 510S2 10/38 SJTW: 38 rpm; Somfy 515A2 15/20 SJTW: 20 rpm.

Which durability indicators does each publish?

OpenAxia does not rate reliability; the published indicators are: Short-time duty (S2) — Somfy 510S2 10/38 SJTW: 5 min; Somfy 515A2 15/20 SJTW: 5 min. IP rating — Somfy 510S2 10/38 SJTW: IP44; Somfy 515A2 15/20 SJTW: IP44.

Somfy: 510S2 10/38 SJTW vs 515A2 15/20 SJTW Compared

Rated power input — Somfy 510S2 10/38 SJTW: 150 W^{[2; 2026-09-30]}; Somfy 515A2 15/20 SJTW: 130 W^{[2; 2026-10-06]}.

Rated current — Somfy 510S2 10/38 SJTW: 1.3 A^{[1; 2026-10-07]}; Somfy 515A2 15/20 SJTW: 1.1 A^{[1; 2026-10-07]}.

Rated torque — Somfy 510S2 10/38 SJTW: 10 Nm^{[1; 2026-10-07]}; Somfy 515A2 15/20 SJTW: 15 Nm^{[1; 2026-10-07]}.

Last verified: 2026-10-07

When to choose Somfy 510S2 10/38 SJTW

For 120 V^{[1; 2026-10-07]} / 60 Hz^{[1; 2026-10-07]} mains.
For the stated supply type: AC mains^{[1; 2026-10-07]}.
For a rated torque of 10 Nm^{[1; 2026-10-07]}.
For a rated speed of 38 rpm^{[1; 2026-10-07]}.

When to choose Somfy 515A2 15/20 SJTW

For 120 V^{[1; 2026-10-07]} / 60 Hz^{[1; 2026-10-07]} mains.
For the stated supply type: AC mains^{[1; 2026-10-07]}.
For a rated torque of 15 Nm^{[1; 2026-10-07]}.
For a rated speed of 20 rpm^{[1; 2026-10-07]}.

Verifiable indicators

Short-time duty (S2) — Somfy 510S2 10/38 SJTW: 5 min^{[1; 2026-10-07]}; Somfy 515A2 15/20 SJTW: 5 min^{[1; 2026-10-07]}.

Rated life — Somfy 510S2 10/38 SJTW: Not published. Somfy 515A2 15/20 SJTW: Not published.

Thermal protection — Somfy 510S2 10/38 SJTW: Not published. Somfy 515A2 15/20 SJTW: Not published.

IP rating — Somfy 510S2 10/38 SJTW: IP44^{[1; 2026-10-07]}; Somfy 515A2 15/20 SJTW: IP44^{[1; 2026-10-07]}.

Comparison table
Property	Somfy 510S2 10/38 SJTWSomfy1038171	Somfy 515A2 15/20 SJTWSomfy1040063
Series & variant axes
Series	LT50	LT50
Power supply	AC mains	AC mains
TorqueDiffers: 10 Nm vs 15 Nm	10 Nm	15 Nm
Electrical
Rated voltage	120 V^{[1; 2026-10-07]}	120 V^{[1; 2026-10-07]}
Mains frequency	60 Hz^{[1; 2026-10-07]}	60 Hz^{[1; 2026-10-07]}
Power supply type	AC mains^{[1; 2026-10-07]}	AC mains^{[1; 2026-10-07]}
Rated power inputDiffers: 150 W^{[2; 2026-09-30]} vs 130 W^{[2; 2026-10-06]}	150 W^{[2; 2026-09-30]}	130 W^{[2; 2026-10-06]}
Standby power	0 W^{[2; 2026-10-01]}	0 W^{[2; 2026-10-06]}
Rated currentDiffers: 1.3 A^{[1; 2026-10-07]} vs 1.1 A^{[1; 2026-10-07]}	1.3 A^{[1; 2026-10-07]}	1.1 A^{[1; 2026-10-07]}
Cable length	2 m^{[1; 2026-10-07]}	2 m^{[1; 2026-10-07]}
Drive performance
Rated torqueDiffers: 10 Nm^{[1; 2026-10-07]} vs 15 Nm^{[1; 2026-10-07]}	10 Nm^{[1; 2026-10-07]}	15 Nm^{[1; 2026-10-07]}
Rated speedDiffers: 38 rpm^{[1; 2026-10-07]} vs 20 rpm^{[1; 2026-10-07]}	38 rpm^{[1; 2026-10-07]}	20 rpm^{[1; 2026-10-07]}
Short-time duty (S2)	5 min^{[1; 2026-10-07]}	5 min^{[1; 2026-10-07]}
Environment & protection
IP rating	IP44^{[1; 2026-10-07]}	IP44^{[1; 2026-10-07]}
Operating temp. (min)	-10 °C^{[1; 2026-10-07]}	-10 °C^{[1; 2026-10-07]}
Operating temp. (max)	60 °C^{[1; 2026-10-07]}	60 °C^{[1; 2026-10-07]}
Noise level	56 dB(A)^{[1; 2026-10-07]}	Not published
View all 24 variants
Documents	Official datasheet ↗	Official datasheet ↗

Same-series variants

Variant axis	Somfy 510S2 10/38 SJTW	Somfy 515A2 15/20 SJTW
Torque	10 Nm^{[Somfy PDF catalogue lt50ra-d0025.pdf; 2026-10-07]}	15 Nm^{[Somfy PDF catalogue lt50ra-d0025.pdf; 2026-10-07]}

Questions and answers

What supply voltage and frequency does each use?: Rated voltage — Somfy 510S2 10/38 SJTW: 120 V; Somfy 515A2 15/20 SJTW: 120 V. Mains frequency — Somfy 510S2 10/38 SJTW: 60 Hz; Somfy 515A2 15/20 SJTW: 60 Hz. Power supply type — Somfy 510S2 10/38 SJTW: AC mains; Somfy 515A2 15/20 SJTW: AC mains.
What torque and speed is each rated for?: Rated torque — Somfy 510S2 10/38 SJTW: 10 Nm; Somfy 515A2 15/20 SJTW: 15 Nm. Rated speed — Somfy 510S2 10/38 SJTW: 38 rpm; Somfy 515A2 15/20 SJTW: 20 rpm.
Which durability indicators does each publish?: OpenAxia does not rate reliability; the published indicators are: Short-time duty (S2) — Somfy 510S2 10/38 SJTW: 5 min; Somfy 515A2 15/20 SJTW: 5 min. IP rating — Somfy 510S2 10/38 SJTW: IP44; Somfy 515A2 15/20 SJTW: IP44.

Sources

↑Somfy PDF catalogue lt50ra-d0025service.somfy.comRated voltage: Voltage Supply: 120V AC, 60Hz [1037036] (p. 1)Manufacturer-stated · Observed 2026-10-07 · Retrieved 2026-10-06 · Public web pageUsed for: 51086, 51109, 51088, 51111, 51087, 51110, 51094, 51117, 51092, 51115, 51093, 51116, 51095, 51118, 51096, 51119, 51089, 51112, 51090, 51113, 51091, 51114, 51097
↑Somfy Systems (North America) manufacturer site (product catalog)somfysystems.comRated power input: Consumption during operation 150 WManufacturer-stated · Observed 2026-09-30 · Retrieved 2026-09-30 · Public web pageUsed for: 4490, 50948, 10542, 50949

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Somfy 510S2 10/38 SJTW vs Somfy 515A2 15/20 SJTW