Alpha WSERD40-B 5/28 Rechargeable Blind Motor

The Alpha WSERD40-B 5/28 is a powerful 5Nm internal rechargeable battery motor designed for larger and wider motorised roller blind installations where additional lifting capacity is required without the need for permanent electrical wiring.

Alpha specifies that the motor can operate three linked internal roller blinds spanning up to 5 metres wide and 2.5 metres high, making it particularly suitable for wide window openings and multi-blind installations.

The Alpha WSERD40-B 5/28 combines a rechargeable lithium battery system with electronic limits, built-in radio receiver, wireless limit setting and a 28 rpm output speed.

Its sleek mounting head has been designed with refined interior applications in mind, helping provide a cleaner appearance in installations where the motor hardware may be visible.

Powerful 5Nm Rechargeable Motor

The Alpha WSERD40-B 5/28 provides 5Nm of rated torque, significantly increasing available motor power compared with the smaller rechargeable motors in the WSERD30-B range.

Alpha specifically designed this motor for applications requiring greater power and speed while maintaining the convenience of a rechargeable system.

Its rechargeable design can also remove the requirement for permanent mains wiring at the blind, making it an attractive option for installations where running electrical wiring would be difficult or undesirable.

Operate Three Linked Roller Blinds

One of the major capabilities of the Alpha WSERD40-B 5/28 is its ability to operate multiple linked blinds.

Alpha specifies that the motor can lift:

3 linked internal roller blinds up to 5m wide × 2.5m high.

This makes it particularly useful across large window spans where multiple roller blinds are mechanically linked and operated together.

Correct motor selection and installation remain important, particularly for linked systems where the complete blind configuration must be considered.

Fast 28 RPM Operation

The Alpha WSERD40-B 5/28 provides a fixed 28 rpm output speed.

Combined with its 5Nm torque, this provides the combination of power and movement speed required for the larger internal roller blind applications for which the motor is designed.

Rechargeable Battery System

The Alpha WSERD40-B 5/28 incorporates an internal rechargeable battery system.

This allows compatible blinds to be motorised without requiring the motor to remain permanently connected to mains electricity during normal operation.

Rechargeable operation can be particularly useful for retrofit installations or properties where electrical wiring is not conveniently located near the window.

Alpha ALDC 12.6V 1Amp Charger

Alpha specifically states that the Alpha ALDC 12.6V 1Amp Charger must be used to charge the Alpha WSERD40-B 5/28.

This is important because this motor does not use the 5V USB-C charger used by the smaller WSERD30-B motors we’ve just added.

Customers replacing or purchasing an additional charger should therefore select the correct Alpha ALDC 12.6V 1Amp Charger for this motor.

Electronic Limit Switch

The Alpha WSERD40-B 5/28 incorporates an electronic limit switch.

Electronic limits allow the upper and lower stopping positions of the roller blind system to be configured electronically.

Once correctly programmed, these limits determine the points at which the motor stops during normal opening and closing.

Wireless Limit Setting

Alpha also specifies wireless limit setting for the Alpha WSERD40-B 5/28.

This allows the motor’s limits to be configured using compatible Alpha control equipment without requiring conventional mechanical adjustment directly on the motor.

Wireless programming can make setup and subsequent adjustments more convenient, particularly where the motor is installed in a difficult-to-access position.

Built-In Receiver

The radio receiver is built directly into the Alpha WSERD40-B 5/28.

An integrated receiver reduces the need for separate external radio-control hardware and allows the motor to communicate with compatible Alpha control products.

Compatible With Alpha Controls and Integration Devices

Alpha states that, like its other radio products, the Alpha WSERD40-B 5/28 is compatible with Alpha controls and integration devices.

This provides flexibility when configuring the overall motorised blind control system and allows the motor to form part of a broader Alpha installation rather than functioning only as a standalone motor.

Sleek Mounting Head

The Alpha WSERD40-B 5/28 features a sleek mounting head designed for refined interior applications.

This is particularly relevant for premium residential and commercial installations where the appearance of the motor and mounting components is an important consideration alongside performance.

35mm Diameter Motor

Alpha specifies the WSERD40-B 5/28 as a 35mm diameter motor.

Despite its compact tubular format, the motor provides 5Nm of torque and the capacity required for significantly larger linked roller blind installations.

Technical Specifications

• Model: Alpha WSERD40-B 5/28
• Product Code: WSERD40-B-5/28
• Application: Internal roller blinds
• Rated Torque: 5Nm
• Output Speed: 28 rpm
• Nominal Consumption: 42W
• Input Voltage: 100–240V
• Nominal Voltage: 12V
• Nominal Current: 3.5A
• Running Time: 12 minutes
• Protection Index: IP44
• Total Length: 610mm
• Motor Diameter: 35mm
• Maximum Turns: Infinity
• Net Weight: 1.4kg
• Sound Intensity: 30dB
• Electronic Limit Switch: Yes
• Built-In Receiver: Yes
• Wireless Limit Setting: Yes
• Rechargeable Battery: Yes
• Maximum Application: 3 linked internal roller blinds up to 5m wide × 2.5m high

Compatible Accessories

Alpha ALDC 12.6V 1Amp Charger

This is the important internal link for this motor.

Alpha specifically instructs customers to use the Alpha ALDC 12.6V 1Amp Charger to charge the Alpha WSERD40-B 5/28.

Because you’ve already created the Frontline product page for this charger, make “Alpha ALDC 12.6V 1Amp Charger” the clickable anchor text directly to that product.

I wouldn’t add the TYB004, 5V-C charger or USB-C extensions to this motor because Alpha hasn’t listed them as compatible with the WSERD40-B 5/28.

FAQs

What size blinds can the Alpha WSERD40-B 5/28 operate?

Alpha states that the motor can lift three linked internal roller blinds up to 5 metres wide × 2.5 metres high.

How powerful is the Alpha WSERD40-B 5/28?

The motor provides 5Nm of rated torque with an output speed of 28 rpm.

What charger does the Alpha WSERD40-B 5/28 use?

Alpha specifically requires the Alpha ALDC 12.6V 1Amp Charger for this motor.

Does the Alpha WSERD40-B 5/28 use the 5V USB-C charger?

No. The charging information supplied by Alpha specifically identifies the ALDC 12.6V 1Amp Charger for the Alpha WSERD40-B 5/28.

Does the Alpha WSERD40-B 5/28 have electronic limits?

Yes. It features an electronic limit switch as well as wireless limit setting.

Does it have a built-in receiver?

Yes. The Alpha WSERD40-B 5/28 incorporates its radio receiver directly into the motor.

Can the Alpha WSERD40-B 5/28 work with other Alpha controls?

Yes. Alpha states that the motor is compatible with Alpha controls and integration devices, allowing it to form part of a broader Alpha motorised blind control system.