What torque and speed is each rated for?

Rated torque — Somfy Sonesse® ULTRA 504 A8 DC RS485: 4 Nm; A-OK AM45 Light Touch Zipscreen Motor: 4 Nm. Rated speed — Somfy Sonesse® ULTRA 504 A8 DC RS485: 25 rpm; A-OK AM45 Light Touch Zipscreen Motor: 25 rpm.

Which durability indicators does each publish?

OpenAxia does not rate reliability; the published indicators are: Short-time duty (S2) — Somfy Sonesse® ULTRA 504 A8 DC RS485: 5 min; A-OK AM45 Light Touch Zipscreen Motor: 4 min. IP rating — Somfy Sonesse® ULTRA 504 A8 DC RS485: IP20; A-OK AM45 Light Touch Zipscreen Motor: IP64.

Somfy Sonesse® ULTRA 504 A8 DC RS485: 36 W vs 50 W

Rated power input — Somfy Sonesse® ULTRA 504 A8 DC RS485: 36 W^{[3; 2026-09-30]}; A-OK AM45 Light Touch Zipscreen Motor: 50 W^{[1; 2026-09-30]}.

Rated current — Somfy Sonesse® ULTRA 504 A8 DC RS485: 1.5 A^{[2; 2026-10-06]}; A-OK AM45 Light Touch Zipscreen Motor: 0.4 A^{[1; 2026-09-30]}.

Short-time duty (S2) — Somfy Sonesse® ULTRA 504 A8 DC RS485: 5 min^{[2; 2026-10-06]}; A-OK AM45 Light Touch Zipscreen Motor: 4 min^{[1; 2026-10-01]}.

Last verified: 2026-10-06

When to choose Somfy Sonesse® ULTRA 504 A8 DC RS485

For a supply rated 24 V^{[2; 2026-10-06]}.
For the stated supply type: DC^{[2; 2026-10-06]}.
For a rated torque of 4 Nm^{[2; 2026-10-06]}.
For a rated speed of 25 rpm^{[2; 2026-10-06]}.

When to choose A-OK AM45 Light Touch Zipscreen Motor

For a rated torque of 4 Nm^{[1; 2026-09-30]}.
For a rated speed of 25 rpm^{[1; 2026-10-01]}.
For the stated protection rating: IP64^{[1; 2026-09-30]}.
For a stated minimum operating temperature of -10 °C^{[1; 2026-09-30]}.

Verifiable indicators

Short-time duty (S2) — Somfy Sonesse® ULTRA 504 A8 DC RS485: 5 min^{[2; 2026-10-06]}; A-OK AM45 Light Touch Zipscreen Motor: 4 min^{[1; 2026-10-01]}.

Rated life — Somfy Sonesse® ULTRA 504 A8 DC RS485: Not published. A-OK AM45 Light Touch Zipscreen Motor: Not published.

Thermal protection — Somfy Sonesse® ULTRA 504 A8 DC RS485: Not published. A-OK AM45 Light Touch Zipscreen Motor: Not published.

IP rating — Somfy Sonesse® ULTRA 504 A8 DC RS485: IP20^{[2; 2026-10-06]}; A-OK AM45 Light Touch Zipscreen Motor: IP64^{[1; 2026-09-30]}.

Comparison table
Property	Somfy Sonesse® ULTRA 504 A8 DC RS485Somfy1134022	A-OK AM45 Light Touch Zipscreen MotorA-OKAM45G-4/25-ZS-E-LT
Series & variant axes
SeriesDiffers: Sonesse ULTRA 50 vs AM45	Sonesse ULTRA 50	AM45
Identity & lineage
Series / product line	Not published	AM45^{[1; 2026-09-30]}
Electrical
Rated voltage	24 V^{[2; 2026-10-06]}	Not published
Power supply type	DC^{[2; 2026-10-06]}	Not published
Rated power inputDiffers: 36 W^{[3; 2026-09-30]} vs 50 W^{[1; 2026-09-30]}	36 W^{[3; 2026-09-30]}	50 W^{[1; 2026-09-30]}
Standby power	0.48 W^{[3; 2026-10-01]}	Not published
Rated currentDiffers: 1.5 A^{[2; 2026-10-06]} vs 0.4 A^{[1; 2026-09-30]}	1.5 A^{[2; 2026-10-06]}	0.4 A^{[1; 2026-09-30]}
Cable length	0.25 m^{[2; 2026-10-06]}	Not published
Drive performance
Rated torque	4 Nm^{[2; 2026-10-06]}	4 Nm^{[1; 2026-09-30]}
Rated speed	25 rpm^{[2; 2026-10-06]}	25 rpm^{[1; 2026-10-01]}
Speed range (min)	Not published	20 rpm^{[1; 2026-10-01]}
Speed range (max)	Not published	30 rpm^{[1; 2026-10-01]}
Short-time duty (S2)Differs: 5 min^{[2; 2026-10-06]} vs 4 min^{[1; 2026-10-01]}	5 min^{[2; 2026-10-06]}Highest stated	4 min^{[1; 2026-10-01]}
Duty type	Not published	S2^{[1; 2026-10-01]}
Limits & protection
Limit setting	Electronic^{[2; 2026-10-06]}	Not published
Limit range	38 turns^{[2; 2026-10-06]}	Not published
Control & communication
Control protocol	RS-485^{[3; 2026-09-30]}	Not published
Environment & protection
IP ratingDiffers: IP20^{[2; 2026-10-06]} vs IP64^{[1; 2026-09-30]}	IP20^{[2; 2026-10-06]}	IP64^{[1; 2026-09-30]}Highest stated
Operating temp. (min)Differs: 0 °C^{[2; 2026-10-06]} vs -10 °C^{[1; 2026-09-30]}	0 °C^{[2; 2026-10-06]}	-10 °C^{[1; 2026-09-30]}Lowest stated
Operating temp. (max)Differs: 60 °C^{[2; 2026-10-06]} vs 65 °C^{[1; 2026-09-30]}	60 °C^{[2; 2026-10-06]}	65 °C^{[1; 2026-09-30]}Highest stated
Noise level	38 dB(A)^{[2; 2026-10-06]}	Not published
Appearance
Colour / finish	Not published	Yellow^{[1; 2026-10-01]}
Documents	Official datasheet ↗	Request datasheet

Series

Questions and answers

What torque and speed is each rated for?: Rated torque — Somfy Sonesse® ULTRA 504 A8 DC RS485: 4 Nm; A-OK AM45 Light Touch Zipscreen Motor: 4 Nm. Rated speed — Somfy Sonesse® ULTRA 504 A8 DC RS485: 25 rpm; A-OK AM45 Light Touch Zipscreen Motor: 25 rpm.
Which durability indicators does each publish?: OpenAxia does not rate reliability; the published indicators are: Short-time duty (S2) — Somfy Sonesse® ULTRA 504 A8 DC RS485: 5 min; A-OK AM45 Light Touch Zipscreen Motor: 4 min. IP rating — Somfy Sonesse® ULTRA 504 A8 DC RS485: IP20; A-OK AM45 Light Touch Zipscreen Motor: IP64.

Sources

↑A-OK Motor manufacturer site (product catalog)a-okmotor.comSeries / product line: AM45 Light Touch Zipscreen MotorManufacturer-stated · Observed 2026-09-30 · Retrieved 2026-09-23 · Public web pageUsed for: 2638, 2634, 2635, 2630, 9825, 9827, 9828, 9829, 9830, 2632, 2636, 2637, 9826
↑Somfy PDF catalogueservice.somfy.comRated voltage: Voltage Supply: 24V DC [1134022] (p. 1)Manufacturer-stated · Observed 2026-10-06 · Retrieved 2026-10-06 · Public web pageUsed for: 50375, 50376, 50384, 50382, 50383, 50385, 50386, 50378, 50379, 50377, 50380, 50381, 50387
↑Somfy Systems (North America) manufacturer site (product catalog)somfysystems.comRated power input: Consumption during operation 36 WManufacturer-stated · Observed 2026-09-30 · Retrieved 2026-09-30 · Public web pageUsed for: 3652, 10125, 3654

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Somfy Sonesse® ULTRA 504 A8 DC RS485 vs A-OK AM45 Light Touch Zipscreen Motor