Wheelock® Series MB Motor Bells by the Eaton company
High-Output Audible Notification with Reliable 24 VDC Performance
The Wheelock® Series MB Motor Bells from KiddeFenwal deliver powerful, dependable audible notification for use with Kidde Fire Systems branded fire alarm and suppression systems. Available in 6-inch and 10-inch models, these bells produce high sound pressure levels (dBA) while maintaining low current draw for efficient operation.
Each bell features a durable, high-torque permanent magnet motor designed for long life and consistent performance. With versatile mounting configurations and lightweight aluminum shells, the Wheelock MB Series provides flexible installation and reliable operation for a wide range of commercial, industrial, and life safety applications.
Key Advantages
- Powerful Performance
Produces a high-output audible signal to ensure clear, attention-commanding alerts. - Energy Efficient
Low current draw minimizes load on NAC power supplies. - Durable Construction
Aluminum low-frequency shell provides superior sound projection and longevity. - Versatile Mounting
Multiple installation options including surface, semi-flush, outdoor, and concealed conduit.
- Easy Installation
Built-in trim plate simplifies semi-flush mounting and alignment. - Reliable Operation
Polarized design supports DC supervision of Notification Appliance Circuits (NACs). - Compliant and Proven
Meets major safety, performance, and accessibility standards for fire alarm signaling.
Applications
The Wheelock MB Series Motor Bells are ideal for:
- Fire alarm and suppression systems requiring clear audible notification
- Industrial and commercial facilities with moderate to high ambient noise levels
- Warehouses, plants, and large occupancy buildings needing high-impact signaling
- Retrofit or upgrade projects integrating with existing 24 VDC systems
System Architecture
Construction & Design
Shell Sizes: 6-inch and 10-inch
Material: Lightweight aluminum bell shell with durable red enamel finish
Motor: High-torque permanent magnet motor for consistent tone output
Mounting: Compatible with multiple configurations including surface, semi-flush, and outdoor applications
Wiring: Screw terminals for #12–#18 AWG wire; polarized for DC supervision
Trim plate: Integrated design simplifies semi-flush installation
Compliance & Certifications
- UL 464 – Audible Signal Appliances
- CAN/ULC-S525-07 – Audible Signal Devices for Fire Alarm Systems
- Factory Mutual (FM) Approved
- California State Fire Marshal (CSFM) Listed
- Chicago (BFP) Approve
- Meets OSHA 29 CFR 1910.165 Audible Alarm Requirements
Technical Documents
- Kidde Fire Systems Model 43T Vibrating BellDownload PDF
Data Sheet · 1.4 MB
- Wheelock DSM Synchronization ModuleDownload PDF
Data Sheet · 1.3 MB
- KiddeFenwal Wheelock Eluxa MultiTone Horns and Horn-StrobesDownload PDF
Data Sheet · 785 KB
- KF One Stop Solution Sell Sheet SSK-OSSDownload PDF
Sell Sheet · 1.8 MB
- KF Capabilities BrochureDownload PDF
Brochures · 5.5 MB
Performance That Rings True
The Wheelock® Series MB Motor Bells deliver the unmistakable strength and reliability that safety-critical systems demand. Engineered for durability, efficiency, and audibility, they’re built to perform when every second, and every sound, matters.
Frequently asked questions
Where can I buy genuine Wheelock Series MB Motor Bells in Vietnam?
Wheelock Series MB Motor Bells is supplied in Vietnam by KiddeFenwal Vietnam with technical documentation, certificates and engineering support. Send a quotation request for a project-specific proposal.
Is original technical documentation available for Wheelock Series MB Motor Bells?
Yes. Data sheets, design–installation–maintenance manuals and listings are in the Document Library; final specifications follow the latest KiddeFenwal data sheet.
How are price and lead time determined?
Fire protection systems are configured per project (protected area, standards, accessories), so pricing and lead time are quoted individually after the KiddeFenwal Vietnam engineering team reviews your requirements.
Need advice or a quote for this product?
KiddeFenwal Vietnam brings the full Kidde Fire Systems, Fenwal Controls and Kidde Fire Protection portfolio – fire detection, suppression and safety controls – to critical industries in Vietnam.