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Last verified: 2026-10-09

Verifiable indicators

Short-time duty (S2) — Wistar motor WSME50-LED · 40 Nm · 16 rpm: 4 min^{[1; 2026-10-01]}; Somfy 540R2 40/14 SJTW: 5 min^{[2; 2026-10-07]}. Elero RolTop M · 40 Nm · 14 rpm: Not published. Elero RolTop M-868 · 40 Nm · 14 rpm: Not published.

Rated life — Wistar motor WSME50-LED · 40 Nm · 16 rpm: Not published. Elero RolTop M · 40 Nm · 14 rpm: Not published. Elero RolTop M-868 · 40 Nm · 14 rpm: Not published. Somfy 540R2 40/14 SJTW: Not published.

Thermal protection — Wistar motor WSME50-LED · 40 Nm · 16 rpm: Not published. Elero RolTop M · 40 Nm · 14 rpm: Not published. Elero RolTop M-868 · 40 Nm · 14 rpm: Not published. Somfy 540R2 40/14 SJTW: Not published.

IP rating — Wistar motor WSME50-LED · 40 Nm · 16 rpm: IP44^{[1; 2026-10-01]}; Somfy 540R2 40/14 SJTW: IP44^{[2; 2026-10-07]}. Elero RolTop M · 40 Nm · 14 rpm: Not published. Elero RolTop M-868 · 40 Nm · 14 rpm: Not published.

Comparison table
Property	Wistar motor WSME50-LED · 40 Nm · 16 rpmWistar motorWSME50-LED-40/16	Elero RolTop M · 40 Nm · 14 rpmElero34 251.0001	Elero RolTop M-868 · 40 Nm · 14 rpmElero34 252.0006	Somfy 540R2 40/14 SJTWSomfy1049894
Series & variant axes
SeriesDiffers: WSME50-LED vs RolTop M vs RolTop M-868 vs LT50	WSME50-LED	RolTop M	RolTop M-868	LT50
Identity & lineage
Series / product line	WSME50-LED^{[1; 2026-10-01]}	Not published	Not published	Not published
Electrical
Rated voltage	120 V^{[1; 2026-10-01]}	Not published	Not published	120 V^{[2; 2026-10-07]}
Mains frequency	60 Hz^{[1; 2026-10-01]}	Not published	Not published	60 Hz^{[2; 2026-10-07]}
Power supply type	AC mains^{[1; 2026-10-01]}	Not published	Not published	AC mains^{[2; 2026-10-07]}
Rated power inputDiffers: 280 W^{[1; 2026-10-01]} vs Not published vs Not published vs 210 W^{[3; 2026-09-30]}	280 W^{[1; 2026-10-01]}	Not published	Not published	210 W^{[3; 2026-09-30]}
Standby power	Not published	Not published	Not published	0 W^{[3; 2026-10-01]}
Rated currentDiffers: 2.4 A^{[1; 2026-10-01]} vs Not published vs Not published vs 1.8 A^{[2; 2026-10-07]}	2.4 A^{[1; 2026-10-01]}	Not published	Not published	1.8 A^{[2; 2026-10-07]}
Cable length	Not published	Not published	Not published	2 m^{[2; 2026-10-07]}
Drive performance
Rated torque	40 Nm^{[1; 2026-10-01]}	40 Nm^{[4; 2026-10-02]}	40 Nm^{[4; 2026-09-23]}	40 Nm^{[2; 2026-10-07]}
Rated speedDiffers: 16 rpm^{[1; 2026-10-01]} vs 14 rpm^{[4; 2026-10-02]} vs 14 rpm^{[4; 2026-09-23]} vs 14 rpm^{[2; 2026-10-07]}	16 rpm^{[1; 2026-10-01]}	14 rpm^{[4; 2026-10-02]}	14 rpm^{[4; 2026-09-23]}	14 rpm^{[2; 2026-10-07]}
Short-time duty (S2)Differs: 4 min^{[1; 2026-10-01]} vs Not published vs Not published vs 5 min^{[2; 2026-10-07]}	4 min^{[1; 2026-10-01]}	Not published	Not published	5 min^{[2; 2026-10-07]}Highest stated
Dimensions & mounting
Motor diameter	45 mm^{[1; 2026-10-01]}	45 mm^{[5; 2026-10-09]}	45 mm^{[5; 2026-10-09]}	Not published
Fits tube diameter	Not published	≥ 50 mm^{[4; 2026-10-02]}	≥ 50 mm^{[4; 2026-10-01]}	Not published
Overall length	980 mm^{[1; 2026-10-01]}	Not published	Not published	Not published
Weight	4.15 kg^{[1; 2026-10-01]}	Not published	Not published	Not published
Limits & protection
Limit settingDiffers: Mechanical^{[1; 2026-10-01]} vs Electronic^{[4; 2026-10-02]} vs Electronic^{[4; 2026-10-01]} vs Not published	Mechanical^{[1; 2026-10-01]}	Electronic^{[4; 2026-10-02]}	Electronic^{[4; 2026-10-01]}	Not published
Limit range	27 turns^{[1; 2026-10-01]}	Not published	Not published	Not published
Control & communication
Control protocol	Not published	Not published	Proprietary RF^{[4; 2026-10-01]}	Not published
Control interface (as stated)	Not published	Hardwired^{[4; 2026-10-02]}	Radio^{[4; 2026-10-01]}	Not published
Radio frequency	Not published	Not published	868 MHz^{[6; 2026-09-23]}	Not published
Environment & protection
IP rating	IP44^{[1; 2026-10-01]}	Not published	Not published	IP44^{[2; 2026-10-07]}
Operating temp. (min)	Not published	Not published	Not published	-10 °C^{[2; 2026-10-07]}
Operating temp. (max)	Not published	Not published	Not published	60 °C^{[2; 2026-10-07]}
Noise level	Not published	Not published	Not published	55 dB(A)^{[3; 2026-09-30]}
Application
Applications	Not published	Roller shutter^{[4; 2026-10-02]}	Roller shutter^{[4; 2026-10-01]}	Not published
Documents	Request datasheet	Request datasheet	Request datasheet	Official datasheet ↗

Sources

↑Wistar motor manufacturer site (product catalog)wistarmotor.comSeries / product line: Ref: WSME50-LEDManufacturer-stated · Observed 2026-10-01 · Retrieved 2026-10-01 · Public web pageUsed for: 12262, 12248, 12260, 12237, 12246, 12250, 12233, 12235, 12252, 12242, 12254, 12258, 12264, 12256, 12239
↑Somfy PDF catalogue lt50ra-d0025service.somfy.comRated voltage: Voltage Supply: 120V AC, 60Hz [1049042] (p. 1)Manufacturer-stated · Observed 2026-10-07 · Retrieved 2026-10-06 · Public web pageUsed for: 51140, 51142, 51141, 51148, 51146, 51147, 51149, 51150, 51143, 51144, 51145
↑Somfy Systems (North America) manufacturer site (product catalog)somfysystems.comRated power input: Consumption during operation 210 WManufacturer-stated · Observed 2026-09-30 · Retrieved 2026-09-30 · Public web pageUsed for: 4871, 11183, 4869
↑Elero manufacturer site (product catalog)elero.comRated torque: 40 NmManufacturer-stated · Observed 2026-10-02 · Retrieved 2026-09-23 · Public web pageUsed for: 44516, 1957, 44517, 1958, 44518, 27262, 44519, 27261, 27263, 44520, 27259, 44521, 27260
↑Tubular diameter derivation tdia-elero-catalog-2026-p51-roltop-melero.com[tdia-elero-catalog-2026-p51-roltop-m] Ø 45 mm from "RolTop M". archive: vendor/elero/aero/catalog_pdf/d3db2f5a3087a18e41569789454c321eaa3e24c3927400842437f18ecca3c54a.pdf p51. elero catalogue 2026 p51, Technical data RolTop M-868 /-K / RolTop M /-K / RolTop M-868 / RolTop M high-speed version / RolTop/D+ M-868 / RolTop/D+ M / RolTop/D+ M NHK / RolTop s_onro M-868 / RolTop s_onro M / RolTop/J M-868 / RolTop/J M: "Min. shaft diameter (mm) 50 … Diameter (mm) 45"Derived (vendor document) · Observed 2026-10-09 · Retrieved 2026-10-09 · Public web pageUsed for: 54634, 54625
↑Elero manufacturer site (product catalog)elero.commodel: RolTop M-868 RolTop M40-868Derived · Observed 2026-09-23 · Retrieved 2026-09-23 · Public web pageUsed for: 7406

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Verifiable indicators

Sources