Alutron Single Motor 15 Amp 120V Circuit Board for MD Central Vacuum – Part# 235S
- Product SKU: 235S
- Category: Central Vacuum Parts & Accessories, MD Central Vacuum Attachment Kit
- Order within
Quick Summary
This replacement control board is for single motor 110 volt central vacuums under 15 amps. It includes the relay, transformer, 15 amp mini breaker, and low voltage connections on one board.
Available from Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.
Quick Highlights
- For single motor 110 volt central vacuums under 15 amps
- Includes relay, transformer, and 15 amp mini breaker
- Has two pairs of low voltage leads
- Fits many MD central vacuum models listed
- May require retrofitting for some installations
- Uses 1/4 inch flag terminal connections
Product Overview
This control module is a replacement option for single motor 110 volt central vacuums that use either separate relay, transformer, and breaker components or a single control board. It is described as compatible with a wide range of central vacuum brands and may require some retrofitting during installation.
The board includes a relay, transformer, 15 amp mini breaker, and two pairs of low voltage leads: a wire set and a black tower with flag terminals. The reset button and low voltage stems are threaded and can secure the board to the vacuum body with the included thin mounting nuts.
Installation guidance in the original listing notes that an electrician should install the board. Wiring uses 1/4 inch flag terminals, and the low voltage wires from the home connect inside the black tower portion of the board.
Key Features
- Single motor application: Made for single motor 110 volt central vacuums rated under 15 amps.
- Integrated control components: Combines the relay, transformer, and 15 amp mini breaker on one control board.
- Low voltage connection options: Includes two pairs of low voltage leads, including a wire set and a black tower with flag terminals.
- Threaded mounting points: The reset button and low voltage stems are threaded to help mount the board through the vacuum body.
- Standard terminal style: The board uses 1/4 inch flag terminal connections for line, neutral, motor, and low voltage wiring.
- MD model fit listing: Listed for select MD central vacuum models including MD A, B, E, J, and M465H in 120V versions.
MD Compatibility
This part is listed as the match for these MD central vacuum power units:
- MD A (120V)
- MD B (120V)
- MD E (120V)
- MD J (120V)
- MD M465H (120V)
Check the model number on your power unit label before ordering. Our team can confirm the match if you are unsure.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Alutron |
| Part number | 235S |
| Voltage | 110 volt / 120v |
| Motor configuration | Single motor |
| Amperage | Under 15 amp |
| Breaker | 15 amp mini breaker |
| Board height | 2 inches high from board to top of reset button |
| Terminal type | 1/4 inch flag terminals |
| Fits MD models | MD A (120V), MD B (120V), MD E (120V), MD J (120V), MD M465H (120V) |
| Compatibility note | AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore and Eureka |
| Authorized Dealer | Ace Vacuums |
Best For
- Replacing a failed single motor 110 volt control board
- MD central vacuum units listed as MD A, B, E, J, and M465H in 120V
- Systems that use separate relay, transformer, and breaker components
- Retrofit repairs where a combined board is needed
Not Ideal For
- Dual motor central vacuum systems
- Units over 15 amps
- Installations where wiring or mounting cannot be confirmed before purchase
Why Buy from Ace Vacuums
When you purchase from Ace Vacuums, you receive:
- Central vacuum parts matched to your MD system
- Help choosing the right hose, tools and inlet parts
- Knowledgeable support before and after the sale
- Shipping or pickup at our Fairfax and Leesburg showrooms
Available Online & In-Store
The Alutron Single Motor 15 Amp 120V Circuit Board for MD Central Vacuum is available online and in-store through Ace Vacuums.
Visit Our Showrooms
- Fairfax, VA: 11110 Main St, Fairfax, VA 22030
- Leesburg, VA: 300 Fort Evans Rd NE, Leesburg, VA 20176
Call 703-997-9292 (ext. 1 Fairfax, ext. 2 Leesburg).
Quick Summary
This replacement control board is for single motor 110 volt central vacuums under 15 amps. It includes the relay, transformer, 15 amp mini breaker, and low voltage connections on one board.
Available from Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.
Quick Highlights
- For single motor 110 volt central vacuums under 15 amps
- Includes relay, transformer, and 15 amp mini breaker
- Has two pairs of low voltage leads
- Fits many MD central vacuum models listed
- May require retrofitting for some installations
- Uses 1/4 inch flag terminal connections
Product Overview
This control module is a replacement option for single motor 110 volt central vacuums that use either separate relay, transformer, and breaker components or a single control board. It is described as compatible with a wide range of central vacuum brands and may require some retrofitting during installation.
The board includes a relay, transformer, 15 amp mini breaker, and two pairs of low voltage leads: a wire set and a black tower with flag terminals. The reset button and low voltage stems are threaded and can secure the board to the vacuum body with the included thin mounting nuts.
Installation guidance in the original listing notes that an electrician should install the board. Wiring uses 1/4 inch flag terminals, and the low voltage wires from the home connect inside the black tower portion of the board.
Key Features
- Single motor application: Made for single motor 110 volt central vacuums rated under 15 amps.
- Integrated control components: Combines the relay, transformer, and 15 amp mini breaker on one control board.
- Low voltage connection options: Includes two pairs of low voltage leads, including a wire set and a black tower with flag terminals.
- Threaded mounting points: The reset button and low voltage stems are threaded to help mount the board through the vacuum body.
- Standard terminal style: The board uses 1/4 inch flag terminal connections for line, neutral, motor, and low voltage wiring.
- MD model fit listing: Listed for select MD central vacuum models including MD A, B, E, J, and M465H in 120V versions.
MD Compatibility
This part is listed as the match for these MD central vacuum power units:
- MD A (120V)
- MD B (120V)
- MD E (120V)
- MD J (120V)
- MD M465H (120V)
Check the model number on your power unit label before ordering. Our team can confirm the match if you are unsure.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Alutron |
| Part number | 235S |
| Voltage | 110 volt / 120v |
| Motor configuration | Single motor |
| Amperage | Under 15 amp |
| Breaker | 15 amp mini breaker |
| Board height | 2 inches high from board to top of reset button |
| Terminal type | 1/4 inch flag terminals |
| Fits MD models | MD A (120V), MD B (120V), MD E (120V), MD J (120V), MD M465H (120V) |
| Compatibility note | AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore and Eureka |
| Authorized Dealer | Ace Vacuums |
Best For
- Replacing a failed single motor 110 volt control board
- MD central vacuum units listed as MD A, B, E, J, and M465H in 120V
- Systems that use separate relay, transformer, and breaker components
- Retrofit repairs where a combined board is needed
Not Ideal For
- Dual motor central vacuum systems
- Units over 15 amps
- Installations where wiring or mounting cannot be confirmed before purchase
Why Buy from Ace Vacuums
When you purchase from Ace Vacuums, you receive:
- Central vacuum parts matched to your MD system
- Help choosing the right hose, tools and inlet parts
- Knowledgeable support before and after the sale
- Shipping or pickup at our Fairfax and Leesburg showrooms
Available Online & In-Store
The Alutron Single Motor 15 Amp 120V Circuit Board for MD Central Vacuum is available online and in-store through Ace Vacuums.
Visit Our Showrooms
- Fairfax, VA: 11110 Main St, Fairfax, VA 22030
- Leesburg, VA: 300 Fort Evans Rd NE, Leesburg, VA 20176
Call 703-997-9292 (ext. 1 Fairfax, ext. 2 Leesburg).
Frequently Asked Questions
What type of vacuum is this circuit board for?
It is for single motor 110 volt central vacuums under 15 amps.
What is included on the board?
The board includes a relay, transformer, 15 amp mini breaker, and two pairs of low voltage leads.
Will this fit my MD central vacuum?
It is listed for MD A, MD B, MD E, MD J, and MD M465H in 120V versions. If you are not sure, confirm your MD central vacuum model and wiring setup before ordering.
Can this replace systems with separate relay, transformer, and breaker parts?
Yes. The description says it is an excellent replacement for single motor 110 volt central vacuums with separate relay, transformer, and breaker parts or with a single control board.
Does installation require any modification?
Possibly. The description notes that some retrofitting may be required, and if there is not a proper hole for installation, holes may need to be created.
How is the board mounted?
The reset button and low voltage stems are threaded and, when passed through holes in the vacuum body, are secured with the included thin mounting nuts.
What wiring terminals does it use?
The connections are 1/4 inch flag terminals. The low voltage wires from the home attach to the two 1/4 inch male flag connectors inside the black tower.
Should an electrician install this board?
The listing recommends that an electrician install the board.
Visit Our Showrooms
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📍 AceVacuums Fairfax (DMV Hub)
Address: 11110 Main St, Fairfax, VA 22030
Landmark: Opposite Havertys Furniture Store
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Address: 300 Fort Evans Rd NE, Suite 104, Leesburg, VA 20176
Landmark: Next to Home Depot in Leesburg
Best for: Ashburn, Sterling, Frederick MD, Loudoun County
Shipping, Return & Refund Policy
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In-stock merchandise generally ships from our Leesburg, Virginia location within 3–5 business days. Processing time is separate from carrier transit time and is not a guaranteed delivery date. Weekends and holidays can affect timing. Special-order, backordered or unavailable items may take longer; contact us to confirm timing before purchase when a deadline matters.
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Eligible unused items have a 30-calendar-day return request window for refunds or exchanges, measured from delivery or in-store purchase. Return authorization is required. Final-sale exclusions, the 15% restocking fee for change-of-mind returns and shipping responsibilities are explained in our Return and Refund Policy. That policy is the governing source for return eligibility and fees.
For shipping or return help, email sales@acevacuums.com or call 703-997-9292.
30-Day Returns, Refunds and Exchanges
Updated September 27, 2026. Request a return for an eligible unused item within 30 calendar days of delivery (or purchase for items collected in store). Eligible returns may be refunded to the original payment method or exchanged, subject to availability. The same 30-day request window applies to both refunds and exchanges; there is no separate seven-day or 15-day refund deadline.
Eligibility and authorization
Items must be unused, clean, complete and in their original packaging with all accessories, manuals and proof of purchase. Contact sales@acevacuums.com or 703-997-9292 before sending anything back. Include your order number, item and reason for return. We will confirm eligibility, charges and return instructions. Unapproved or cash-on-delivery returns are not accepted.
Fees and shipping
For an approved change-of-mind return, a 15% restocking fee applies to the returned merchandise price. Original shipping charges are not refundable and the customer pays return shipping. These charges do not apply to an approved return caused by our shipping error or a damaged/defective item claim. Contact us first so we can arrange the appropriate remedy and shipping instructions. Do not assume a prepaid label is included.
Final-sale and excluded items
Air purifiers; discounted, clearance, trade-in, holiday-sale and price-matched purchases; gift cards; custom or special-order products; electrical parts; used or installed items; opened cleaning solutions; and used bags, filters, belts or other consumables are not eligible for change-of-mind returns. Other items clearly marked final sale at purchase are also excluded. An opened box alone does not disqualify an otherwise eligible unused, complete item, but consumables and cleaning solutions must remain unopened.
Damaged, defective, incorrect or missing items; recalls
Inspect your order promptly and contact us as soon as you discover a problem, with your order number and photos where helpful. Keep the packaging. Change-of-mind exclusions and deadlines do not remove applicable defect, warranty, recall or statutory rights. Warranty coverage requires evaluation under the manufacturer's terms; dealer status does not guarantee free repair. Recalled products must follow the manufacturer's recall process.
Refund timing and exchanges
After we receive and inspect the return, we will notify you of approval or the reason it cannot be accepted. Approved refunds are issued to the original payment method within 10 business days of approval; your bank may take additional time to post them. Contact us if more than 15 business days have passed since approval. Exchanges require authorization and replacement availability; any price difference and applicable charges will be explained before processing.
Applicable rights and earlier purchases
This policy applies to online and in-store purchases. We will honor more favorable written return terms provided with an earlier purchase. Applicable consumer rights remain unaffected. Where the European Union 14-day cancellation right applies, customers may cancel or return eligible orders within 14 days of receipt, subject to applicable legal exceptions, without giving a reason.
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