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Last verified: 2026-10-09

Verifiable indicators

Short-time duty (S2) — Wistar motor WSM50 · 40 Nm · 16 rpm: 4 min^{[1; 2026-10-01]}. Somfy 540R2 RTS CMO: Not published. Elero RolTop M · 40 Nm · 14 rpm: Not published. Elero RolTop M-868 · 40 Nm · 14 rpm: Not published.

Rated life — Somfy 540R2 RTS CMO: Not published. Elero RolTop M · 40 Nm · 14 rpm: Not published. Elero RolTop M-868 · 40 Nm · 14 rpm: Not published. Wistar motor WSM50 · 40 Nm · 16 rpm: Not published.

Thermal protection — Somfy 540R2 RTS CMO: Not published. Elero RolTop M · 40 Nm · 14 rpm: Not published. Elero RolTop M-868 · 40 Nm · 14 rpm: Not published. Wistar motor WSM50 · 40 Nm · 16 rpm: Not published.

IP rating — Somfy 540R2 RTS CMO: IP44^{[2; 2026-10-07]}; Wistar motor WSM50 · 40 Nm · 16 rpm: IP44^{[1; 2026-10-01]}. Elero RolTop M · 40 Nm · 14 rpm: Not published. Elero RolTop M-868 · 40 Nm · 14 rpm: Not published.

Comparison table
Property	Somfy 540R2 RTS CMOSomfy1051477	Elero RolTop M · 40 Nm · 14 rpmElero34 251.0001	Elero RolTop M-868 · 40 Nm · 14 rpmElero34 252.0006	Wistar motor WSM50 · 40 Nm · 16 rpmWistar motorWSM50-40/16
Series & variant axes
SeriesDiffers: LT50 vs RolTop M vs RolTop M-868 vs WSM50	LT50	RolTop M	RolTop M-868	WSM50
Identity & lineage
Series / product line	Not published	Not published	Not published	WSM50^{[1; 2026-10-01]}
Electrical
Rated voltage	120 V^{[2; 2026-10-07]}	Not published	Not published	120 V^{[1; 2026-10-01]}
Mains frequency	60 Hz^{[2; 2026-10-07]}	Not published	Not published	60 Hz^{[1; 2026-10-01]}
Power supply type	AC mains^{[2; 2026-10-07]}	Not published	Not published	AC mains^{[1; 2026-10-01]}
Rated power inputDiffers: 210 W^{[3; 2026-09-30]} vs Not published vs Not published vs 280 W^{[1; 2026-10-01]}	210 W^{[3; 2026-09-30]}	Not published	Not published	280 W^{[1; 2026-10-01]}
Standby power	0 W^{[3; 2026-10-01]}	Not published	Not published	Not published
Rated currentDiffers: 1.8 A^{[2; 2026-10-07]} vs Not published vs Not published vs 2.4 A^{[1; 2026-10-01]}	1.8 A^{[2; 2026-10-07]}	Not published	Not published	2.4 A^{[1; 2026-10-01]}
Cable length	1.8 m^{[2; 2026-10-07]}	Not published	Not published	Not published
Drive performance
Rated torque	40 Nm^{[2; 2026-10-07]}	40 Nm^{[4; 2026-10-02]}	40 Nm^{[4; 2026-09-23]}	40 Nm^{[1; 2026-10-01]}
Rated speedDiffers: 14 rpm^{[2; 2026-10-07]} vs 14 rpm^{[4; 2026-10-02]} vs 14 rpm^{[4; 2026-09-23]} vs 16 rpm^{[1; 2026-10-01]}	14 rpm^{[2; 2026-10-07]}	14 rpm^{[4; 2026-10-02]}	14 rpm^{[4; 2026-09-23]}	16 rpm^{[1; 2026-10-01]}
Short-time duty (S2)	Not published	Not published	Not published	4 min^{[1; 2026-10-01]}
Dimensions & mounting
Motor diameter	Not published	45 mm^{[5; 2026-10-09]}	45 mm^{[5; 2026-10-09]}	45 mm^{[1; 2026-10-01]}
Fits tube diameter	Not published	≥ 50 mm^{[4; 2026-10-02]}	≥ 50 mm^{[4; 2026-10-01]}	Not published
Overall length	Not published	Not published	Not published	630 mm^{[1; 2026-10-01]}
Weight	Not published	Not published	Not published	3.15 kg^{[1; 2026-10-01]}
Limits & protection
Limit settingDiffers: Electronic^{[2; 2026-10-07]} vs Electronic^{[4; 2026-10-02]} vs Electronic^{[4; 2026-10-01]} vs Mechanical^{[1; 2026-10-01]}	Electronic^{[2; 2026-10-07]}	Electronic^{[4; 2026-10-02]}	Electronic^{[4; 2026-10-01]}	Mechanical^{[1; 2026-10-01]}
Limit rangeDiffers: 34 turns^{[2; 2026-10-07]} vs Not published vs Not published vs 27 turns^{[1; 2026-10-01]}	34 turns^{[2; 2026-10-07]}	Not published	Not published	27 turns^{[1; 2026-10-01]}
Control & communication
Control protocolDiffers: RTS^{[3; 2026-09-30]} vs Not published vs Proprietary RF^{[4; 2026-10-01]} vs Not published	RTS^{[3; 2026-09-30]}	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 frequencyDiffers: 433.42 MHz^{[3; 2026-10-01]} vs Not published vs 868 MHz^{[6; 2026-09-23]} vs Not published	433.42 MHz^{[3; 2026-10-01]}	Not published	868 MHz^{[6; 2026-09-23]}	Not published
Radio range	200 m^{[3; 2026-10-01]}	Not published	Not published	Not published
Max paired transmitters	12 pcs^{[3; 2026-10-01]}	Not published	Not published	Not published
Environment & protection
IP rating	IP44^{[2; 2026-10-07]}	Not published	Not published	IP44^{[1; 2026-10-01]}
Operating temp. (min)	-10 °C^{[2; 2026-10-07]}	Not published	Not published	Not published
Operating temp. (max)	40 °C^{[2; 2026-10-07]}	Not published	Not published	Not published
Application
Applications	Not published	Roller shutter^{[4; 2026-10-02]}	Roller shutter^{[4; 2026-10-01]}	Not published
Compliance & declarations
Marks stated by vendor	UL^{[3; 2026-10-01]}	Not published	Not published	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 2026-10-01 · Retrieved 2026-10-01 · Public web pageUsed for: 15260, 15245, 15258, 15239, 15243, 15247, 15237, 15238, 15249, 15241, 15251, 15256, 15262, 15253, 15240
↑Somfy PDF catalogueservice.somfy.comRated voltage: Voltage Supply: 120V AC, 60Hz [1049013] (p. 1)Manufacturer-stated · Observed 2026-10-07 · Retrieved 2026-10-06 · Public web pageUsed for: 51185, 51187, 51186, 51195, 51193, 51194, 51196, 51191, 51192, 51190, 51188, 51189
↑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: 4797, 11116, 4799, 11113, 11115, 11114, 11117
↑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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Sources