Alpha WSER50 G 20/17 Universal Grey

The Alpha WSER50 G 20/17 Universal Grey is a powerful 20Nm tubular motor designed for external straight drop blinds, zip screens, and roller shutters. As part of Alpha’s economy “G Series,” it delivers the essential automation features found in larger 30Nm and 50Nm models—while remaining a cost-effective option for residential and commercial outdoor systems.

Built for external applications, the Alpha WSER50 G 20/17 Universal Grey includes a precise electronic limit switch, a built-in receiver for wireless control, and full wireless limit setting. The motor also features Alpha’s upward torque stop function, which allows installers to set a standard top limit and then use torque sensing to protect stoppers on side-channel systems and apply fabric tension in the down position. This makes it ideal for zip screens, straight drops, café blinds, and tensioned outdoor installations.

The motor is fully compatible with RS001 and RS002 Sun/Wind Sensors. When paired with a sensor, the motor expects a heartbeat pulse every 20 minutes. If the blind or awning is down and the motor does not receive this pulse—usually due to sensor battery failure—it automatically retracts the system after approximately 30 minutes to prevent damage, ensuring a high level of safety and automation reliability.

With its 20Nm torque rating, the Alpha WSER50 G 20/17 Universal Grey is also suitable for roller shutters where this lifting capacity is sufficient. Delivering powerful performance, a robust 240V design, IP44 protection rating, and consistent automation features at a competitive price, this motor is one of the most versatile options in Alpha’s Universal range.

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Works perfectly with:

• Alpha RS001 Sun & Wind Sensor

• Alpha RS002 Sun & Wind Sensor

• Alpha Navigator Series Remotes

• Alpha Pioneer Series Remotes

• Zip Screen & Straight Drop Bottom Bar Locks

• 50mm, 60mm, and 63mm Tube Adaptors

• Alpha Motor Bracket A3415 (included but upsell replacements optional)

 

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FAQs

What applications suit the Alpha WSER50 G 20/17 Universal Grey?

The Alpha WSER50 G 20/17 Universal Grey is ideal for external straight drop blinds, zip screens, café blinds, and roller shutters that require a 20Nm motor.

Does the Alpha WSER50 G 20/17 Universal Grey have wireless control?

Yes. It includes a built-in receiver and fully supports wireless limit setting and remote operation.

What is the torque stop feature on the Alpha WSER50 G 20/17 Universal Grey?

The upward torque stop function protects top stoppers in side channels and can also tension the fabric when the blind is fully down.

Is the Alpha WSER50 G 20/17 Universal Grey compatible with sun and wind sensors?

Yes. It works with RS001 and RS002 sensors and includes a safety mode that retracts the awning automatically if heartbeat signals from the sensor stop.

Can this motor be used in roller shutters?

Yes. The 20Nm lifting capacity is suitable for roller shutters where 20Nm is adequate for the curtain weight.

What is included with the Alpha WSER50 G 20/17 Universal Grey?

It includes the A3415 motor bracket. Crown and drive sets depend on tube selection and are sold separately.

What protection rating does the motor have?

The Alpha WSER50 G 20/17 Universal Grey has an IP44 protection index, making it suitable for external covered installations.

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Comparison Table

Feature	Alpha WSER50 G 20/17 Universal Grey	Alpha WSER50 30Nm Motor	Alpha WSER40 10/14 Motor
Torque	20Nm	30Nm	10Nm
Best Use	Zip screens, straight drops, shutters	Large outdoor blinds	Medium–large internal blinds
Torque Stop	Yes	Yes	No
Built-in Receiver	Yes	Yes	Yes
Wireless Limits	Yes	Yes	Yes
Sensor Compatibility	RS001 / RS002	RS001 / RS002	Limited
Protection Rating	IP44	IP44	IP44
Power	240V	240V	240V