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Last verified: 2026-10-07

Verifiable indicators

Short-time duty (S2) — Somfy 520R2 20/14 SJTW: 5 min^{[2; 2026-10-07]}; Wistar motor WSM50 · 20 Nm · 16 rpm: 4 min^{[1; 2026-10-02]}. Elero RolMotion M RH · 20 Nm · 14 rpm: Not published. Elero RolMotion M SH · 20 Nm · 14 rpm: Not published.

Rated life — Somfy 520R2 20/14 SJTW: Not published. Elero RolMotion M RH · 20 Nm · 14 rpm: Not published. Elero RolMotion M SH · 20 Nm · 14 rpm: Not published. Wistar motor WSM50 · 20 Nm · 16 rpm: Not published.

Thermal protection — Somfy 520R2 20/14 SJTW: Not published. Elero RolMotion M RH · 20 Nm · 14 rpm: Not published. Elero RolMotion M SH · 20 Nm · 14 rpm: Not published. Wistar motor WSM50 · 20 Nm · 16 rpm: Not published.

IP rating — Somfy 520R2 20/14 SJTW: IP44^{[2; 2026-10-07]}; Wistar motor WSM50 · 20 Nm · 16 rpm: IP44^{[1; 2026-10-02]}. Elero RolMotion M RH · 20 Nm · 14 rpm: Not published. Elero RolMotion M SH · 20 Nm · 14 rpm: Not published.

Comparison table
Property	Somfy 520R2 20/14 SJTWSomfy1042055	Elero RolMotion M RH · 20 Nm · 14 rpmElero48 231.0001	Elero RolMotion M SH · 20 Nm · 14 rpmElero49 231.0001	Wistar motor WSM50 · 20 Nm · 16 rpmWistar motorWSM50-20/16
Series & variant axes
SeriesDiffers: LT50 vs RolMotion M RH vs RolMotion M SH vs WSM50	LT50	RolMotion M RH	RolMotion M SH	WSM50
Identity & lineage
Series / product line	Not published	Not published	Not published	WSM50^{[1; 2026-10-02]}
Electrical
Rated voltage	120 V^{[2; 2026-10-07]}	Not published	Not published	120 V^{[1; 2026-10-02]}
Mains frequency	60 Hz^{[2; 2026-10-07]}	Not published	Not published	60 Hz^{[1; 2026-10-02]}
Power supply type	AC mains^{[2; 2026-10-07]}	Not published	Not published	AC mains^{[1; 2026-10-02]}
Rated power inputDiffers: 130 W^{[3; 2026-09-30]} vs Not published vs Not published vs 150 W^{[1; 2026-10-02]}	130 W^{[3; 2026-09-30]}	Not published	Not published	150 W^{[1; 2026-10-02]}
Standby power	0 W^{[3; 2026-10-01]}	Not published	Not published	Not published
Rated currentDiffers: 1.1 A^{[2; 2026-10-07]} vs Not published vs Not published vs 1.26 A^{[1; 2026-10-02]}	1.1 A^{[2; 2026-10-07]}	Not published	Not published	1.26 A^{[1; 2026-10-02]}
Cable length	2 m^{[2; 2026-10-07]}	Not published	Not published	Not published
Drive performance
Rated torque	20 Nm^{[2; 2026-10-07]}	20 Nm^{[4; 2026-09-23]}	20 Nm^{[4; 2026-09-23]}	20 Nm^{[1; 2026-10-02]}
Rated speedDiffers: 14 rpm^{[2; 2026-10-07]} vs 14 rpm^{[4; 2026-09-23]} vs 14 rpm^{[4; 2026-09-23]} vs 16 rpm^{[1; 2026-10-02]}	14 rpm^{[2; 2026-10-07]}	14 rpm^{[4; 2026-09-23]}	14 rpm^{[4; 2026-09-23]}	16 rpm^{[1; 2026-10-02]}
Speed range (min)	Not published	5 rpm^{[4; 2026-10-01]}	5 rpm^{[4; 2026-10-01]}	Not published
Short-time duty (S2)Differs: 5 min^{[2; 2026-10-07]} vs Not published vs Not published vs 4 min^{[1; 2026-10-02]}	5 min^{[2; 2026-10-07]}Highest stated	Not published	Not published	4 min^{[1; 2026-10-02]}
Dimensions & mounting
Motor diameter	Not published	Not published	Not published	45 mm^{[1; 2026-10-02]}
Fits tube diameter	Not published	≥ 50 mm^{[4; 2026-10-01]}	≥ 50 mm^{[4; 2026-10-01]}	Not published
Overall length	Not published	Not published	Not published	630 mm^{[1; 2026-10-02]}
Weight	Not published	Not published	Not published	3 kg^{[1; 2026-10-02]}
Limits & protection
Limit settingDiffers: Not published vs Electronic^{[4; 2026-10-01]} vs Electronic^{[4; 2026-10-01]} vs Mechanical^{[1; 2026-10-02]}	Not published	Electronic^{[4; 2026-10-01]}	Electronic^{[4; 2026-10-01]}	Mechanical^{[1; 2026-10-02]}
Limit range	Not published	Not published	Not published	27 turns^{[1; 2026-10-02]}
Control & communication
Control interface (as stated)	Not published	Hardwired^{[4; 2026-10-01]}	Hardwired^{[4; 2026-10-01]}	Not published
Environment & protection
IP rating	IP44^{[2; 2026-10-07]}	Not published	Not published	IP44^{[1; 2026-10-02]}
Operating temp. (min)	-10 °C^{[2; 2026-10-07]}	Not published	Not published	Not published
Operating temp. (max)	60 °C^{[2; 2026-10-07]}	Not published	Not published	Not published
Noise level	48 dB(A)^{[3; 2026-09-30]}	Not published	Not published	Not published
Application
Applications	Not published	Roller shutter^{[4; 2026-10-01]}	Roller shutter^{[4; 2026-10-01]}	Not published
Documents	Official datasheet ↗	Request datasheet	Request datasheet	Request datasheet

Sources

↑Wistar motor manufacturer site (product catalog)wistarmotor.comSeries / product line: Ref: WSM50Manufacturer-stated · Observed 2026-10-02 · Retrieved 2026-10-01 · Public web pageUsed for: 45107, 45100, 45106, 45095, 45099, 45101, 45093, 45094, 45102, 45097, 45103, 45105, 45108, 45104, 45096
↑Somfy PDF catalogue lt50ra-d0025service.somfy.comRated voltage: Voltage Supply: 120V AC, 60Hz [1041026] (p. 1)Manufacturer-stated · Observed 2026-10-07 · Retrieved 2026-10-06 · Public web pageUsed for: 51151, 51153, 51152, 51159, 51157, 51158, 51160, 51161, 51154, 51155, 51156
↑Somfy Systems (North America) manufacturer site (product catalog)somfysystems.comRated power input: Consumption during operation 130 WManufacturer-stated · Observed 2026-09-30 · Retrieved 2026-09-30 · Public web pageUsed for: 4247, 10458, 4245
↑Elero manufacturer site (product catalog)elero.comRated torque: 20 NmManufacturer-stated · Observed 2026-09-23 · Retrieved 2026-09-23 · Public web pageUsed for: 1681, 1671, 1682, 1672, 26212, 26187, 26211, 26186, 26210, 26185, 26208, 26183, 26209, 26184

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Verifiable indicators

Sources