What supply voltage and frequency does each use?

Rated voltage — Becker R40-17-S12: 230 V; Becker L50-17-S12: 230 V. Mains frequency — Becker R40-17-S12: 50 Hz; Becker L50-17-S12: 50 Hz. Power supply type — Becker R40-17-S12: AC mains; Becker L50-17-S12: AC mains.

Which tube diameters do they fit?

Motor diameter — Becker R40-17-S12: 45 mm; Becker L50-17-S12: 58 mm.

What torque and speed is each rated for?

Rated torque — Becker R40-17-S12: 40 Nm; Becker L50-17-S12: 50 Nm. Rated speed — Becker R40-17-S12: 17 rpm; Becker L50-17-S12: 17 rpm.

What protocols and control options does each support?

Limit setting — Becker R40-17-S12: Electronic; Becker L50-17-S12: Electronic.

Becker R40-17-S12 vs Becker L50-17-S12: Specs Compared

Rated power input — Becker R40-17-S12: 260 W^{[2; 2026-10-03]}; Becker L50-17-S12: 315 W^{[2; 2026-10-03]}.

Rated current — Becker R40-17-S12: 1.15 A^{[2; 2026-10-03]}; Becker L50-17-S12: 1.4 A^{[2; 2026-10-03]}.

Rated torque — Becker R40-17-S12: 40 Nm^{[2; 2026-10-03]}; Becker L50-17-S12: 50 Nm^{[2; 2026-10-03]}.

Last verified: 2026-10-05

When to choose Becker R40-17-S12

For 230 V^{[2; 2026-10-03]} / 50 Hz^{[2; 2026-10-03]} mains.
For the stated supply type: AC mains^{[2; 2026-10-03]}.
For the stated diameter: 45 mm^{[1; 2026-10-01]}.
For a rated torque of 40 Nm^{[2; 2026-10-03]}.

When to choose Becker L50-17-S12

For 230 V^{[2; 2026-10-03]} / 50 Hz^{[2; 2026-10-03]} mains.
For the stated supply type: AC mains^{[2; 2026-10-03]}.
For the stated diameter: 58 mm^{[1; 2026-10-01]}.
For a rated torque of 50 Nm^{[2; 2026-10-03]}.

Verifiable indicators

Short-time duty (S2) — Becker R40-17-S12: 4 min^{[2; 2026-10-03]}; Becker L50-17-S12: 4 min^{[2; 2026-10-03]}.

Rated life — Becker R40-17-S12: Not published. Becker L50-17-S12: Not published.

Thermal protection — Becker R40-17-S12: Not published. Becker L50-17-S12: Not published.

IP rating — Becker R40-17-S12: IP44^{[2; 2026-10-03]}; Becker L50-17-S12: IP44^{[2; 2026-10-03]}.

Comparison table
Property	Becker R40-17-S12Becker2040 130 503 0	Becker L50-17-S12Becker2050 130 509 0
Series & variant axes
Series	S12	S12
Identity & lineage
GTIN / EAN	4251852907009^{[1; 2026-10-01]}	4251852907030^{[1; 2026-10-01]}
Electrical
Rated voltage	230 V^{[2; 2026-10-03]}	230 V^{[2; 2026-10-03]}
Mains frequency	50 Hz^{[2; 2026-10-03]}	50 Hz^{[2; 2026-10-03]}
Power supply type	AC mains^{[2; 2026-10-03]}	AC mains^{[2; 2026-10-03]}
Rated power inputDiffers: 260 W^{[2; 2026-10-03]} vs 315 W^{[2; 2026-10-03]}	260 W^{[2; 2026-10-03]}	315 W^{[2; 2026-10-03]}
Rated currentDiffers: 1.15 A^{[2; 2026-10-03]} vs 1.4 A^{[2; 2026-10-03]}	1.15 A^{[2; 2026-10-03]}	1.4 A^{[2; 2026-10-03]}
Cable connection	Pluggable cable^{[1; 2026-10-01]}	Pluggable cable^{[1; 2026-10-01]}
Drive performance
Rated torqueDiffers: 40 Nm^{[2; 2026-10-03]} vs 50 Nm^{[2; 2026-10-03]}	40 Nm^{[2; 2026-10-03]}	50 Nm^{[2; 2026-10-03]}
Rated speed	17 rpm^{[2; 2026-10-03]}	17 rpm^{[2; 2026-10-03]}
Short-time duty (S2)	4 min^{[2; 2026-10-03]}	4 min^{[2; 2026-10-03]}
Duty type	S2^{[2; 2026-10-03]}	S2^{[2; 2026-10-03]}
Dimensions & mounting
Motor diameterDiffers: 45 mm^{[1; 2026-10-01]} vs 58 mm^{[1; 2026-10-01]}	45 mm^{[1; 2026-10-01]}	58 mm^{[1; 2026-10-01]}
Fits tube diameterDiffers: ≥ 50 mm^{[1; 2026-10-01]} vs ≥ 63 mm^{[1; 2026-10-01]}	≥ 50 mm^{[1; 2026-10-01]}	≥ 63 mm^{[1; 2026-10-01]}
WeightDiffers: 2.872 kg^{[1; 2026-10-01]} vs 4.37 kg^{[1; 2026-10-01]}	2.872 kg^{[1; 2026-10-01]}	4.37 kg^{[1; 2026-10-01]}
Limits & protection
Limit setting	Electronic^{[1; 2026-10-01]}	Electronic^{[1; 2026-10-01]}
Limit range	64 turns^{[2; 2026-10-03]}	64 turns^{[2; 2026-10-03]}
Obstacle detection	Yes^{[1; 2026-10-01]}	Yes^{[1; 2026-10-01]}
Soft start / soft stop	Yes^{[1; 2026-10-01]}	Yes^{[1; 2026-10-01]}
Control & communication
Two-way feedback	Yes^{[1; 2026-10-01]}	Yes^{[1; 2026-10-01]}
Sensor inputs	Sun^{[1; 2026-10-01]}, Wind^{[1; 2026-10-01]}	Sun^{[1; 2026-10-01]}, Wind^{[1; 2026-10-01]}
Environment & protection
IP rating	IP44^{[2; 2026-10-03]}	IP44^{[2; 2026-10-03]}
Compliance & declarations
Marks stated by vendor	CE^{[1; 2026-10-05]}	CE^{[1; 2026-10-05]}
Appearance
Colour / finish	Weiß (RAL 9016)^{[1; 2026-10-01]}	Weiß (RAL 9016)^{[1; 2026-10-01]}
View all 15 variants
Documents	Request datasheet	Request datasheet

Cross-brand alternatives

Wistar motor WSME50-LED-40/13: 40 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, 230 V^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}
Wistar motor WSME50-LED-40/16: 40 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, 120 V^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}
Wistar motor WSME50-40/13: 40 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, 230 V^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}
Wistar motor WSME50-40/16: 40 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, 120 V^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}
Wistar motor WSM50-40/13: 40 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, 230 V^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}
Wistar motor WSM50-40/16: 40 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, 120 V^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}

Data gaps

Becker R40-17-S12: Overall length — Not yet collected
Becker L50-17-S12: Overall length — Not yet collected

Questions and answers

What supply voltage and frequency does each use?: Rated voltage — Becker R40-17-S12: 230 V; Becker L50-17-S12: 230 V. Mains frequency — Becker R40-17-S12: 50 Hz; Becker L50-17-S12: 50 Hz. Power supply type — Becker R40-17-S12: AC mains; Becker L50-17-S12: AC mains.
Which tube diameters do they fit?: Motor diameter — Becker R40-17-S12: 45 mm; Becker L50-17-S12: 58 mm.
What torque and speed is each rated for?: Rated torque — Becker R40-17-S12: 40 Nm; Becker L50-17-S12: 50 Nm. Rated speed — Becker R40-17-S12: 17 rpm; Becker L50-17-S12: 17 rpm.
What protocols and control options does each support?: Limit setting — Becker R40-17-S12: Electronic; Becker L50-17-S12: Electronic.

Sources

↑Becker-Antriebe product centre (product catalog)produktcenter.becker-antriebe.comSeries / product line: Serie S12Manufacturer-stated · Observed 2026-10-01 · Retrieved 2026-10-01 · Public web pageUsed for: 21765, 21877, 21767, 21879, 21784, 21892, 21761, 21873, 21796, 21901, 21773, 21885, 21797, 21903, 21788, 21894, 21790, 21895, 21786, 21893, 21794, 21792, 21899, 21897, 48667, 48669, 21775, 21887
↑Becker-Antriebe GmbH PDF cataloguebecker-antriebe.comRated voltage: Nennspannung: 230 V/AC / 50Hz [2040 130 503 0] (p. 30)Manufacturer-stated · Observed 2026-10-03 · Retrieved 2026-10-03 · Public web pageUsed for: 47051, 47073, 47053, 47075, 47052, 47074, 47050, 47072, 47049, 47071, 47046, 47068, 47047, 47069, 47054, 47076, 47055, 47077, 47048, 47070, 47056, 47078

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