The Mastervolt Alpha 24/150 MB alternator is a 24-volt alternator for yachts, motorhomes, and commercial vehicles, delivering up to 150 A of charging current and providing powerful charging even at low engine speeds. Philippi supplies the Alpha 24/150 MB as a Mastervolt system partner and integrates it into your Philippi on-board electrical system with P-Bus and PSL/PSM 3 system monitors via the CMB interface.
- Full charging power even at idle speed – the Alpha 24/150 MB charges powerfully even at low engine speeds, when other alternators would already be struggling
- Supplies the entire 24V on-board electrical system including all connected consumers without a separate charger when the engine is running
- Series flexibility – the Alpha series covers 12V and 24V on-board electrical systems with charging currents from 75 to 150 A, allowing Philippi to offer the right variant for every boat size
- Prepared for system integration – readable directly on the Mastervolt system monitor PSL/PSM 3 via the Philippi CMB interface
Area of application and system integration
The Mastervolt Alpha 24/150 MB alternator is the right choice when an existing engine needs to provide more charging power for a 24V on-board electrical system, for example in refit projects on displacement yachts or long-distance sailing boats with high power demands for cooling, anchor windlass, and navigation electronics. As a Mastervolt system partner, Philippi designs the Alpha 24/150 MB to integrate seamlessly into an existing Philippi on-board electrical system: Via the CMB interface (Philippi order no. 0 7100 0030), charging data from the alternator is displayed on the Philippi system monitors PSL and PSM 3, so that the charge status and engine charging current are always in view.
Mechanically, the Alpha 24/150 MB is designed for drive via a double V-belt; according to Mastervolt manufacturer specifications for the Alpha series, a belt profile of type 2×A with a pulley nominal diameter of 89 mm (3.5 inches) is used. Mastervolt deliberately does not provide a fixed, manufacturer-independent list of suitable engines: Since engine mounts differ from engine to engine, the specific mounting bracket is obtained individually via the engine supplier or engine technician. Philippi supports you in clarifying the appropriate bracket for your engine type and the pulley ratio between the alternator and the main engine.
Technical data
| Feature | Value |
|---|---|
| Nominal voltage | 24 V |
| Charging current | 150 A |
| Charging voltage absorption | 28.5 V |
| Charging voltage float | 26.5 V |
| Belt profile | 2×A (double belt) |
| Pulley nominal diameter | 89 mm (3.5 inches) |
| Weight | 13.1 kg |
| Available series versions | 12 V and 24 V, charging current 75–150 A |
| Article number | M48624150 |
Compatibility
- Engine mounting: Mastervolt does not provide a fixed, engine-specific compatibility list for the Alpha series – the mounting bracket is engine-specific and is obtained via the respective engine supplier or engine technician. The 2×A belt profile and 89 mm pulley nominal diameter are known and relevant for selection; Philippi advises you on checking the pulley ratio for your engine.
- Philippi P-Bus / System Monitor: Integration via the CMB interface (Philippi order no. 0 7100 0030) into P-Bus systems with PSL and PSM 3 monitors.
- Mastervolt system devices: Can be combined as part of a complete Mastervolt system with MasterBus-compatible components such as MasterShunt or MAC Plus.
Frequently asked questions
Does the Alpha 24/150 MB fit every engine?
There is no fixed, manufacturer-independent engine compatibility list from Mastervolt. The mounting bracket is engine-specific and is obtained via the engine supplier or technician; belt profile (2×A) and pulley nominal diameter (89 mm) serve as a starting point for verification. Philippi supports you with this clarification.
Can I integrate the Alpha 24/150 MB into my existing on-board electrical system?
Yes. Via the CMB interface, Philippi integrates the alternator into your P-Bus system, so that charging data is displayed on the PSL and PSM 3 system monitors.
Is the Alpha alternator also available for 12V on-board electrical systems?
Yes, the Alpha series is available in 12V and 24V versions with charging currents from 75 to 150 A. Philippi will advise you on the appropriate variant.
What is the difference between the Alpha 24/150 MB and a standard alternator regulator like the Alpha Pro III?
The Alpha 24/150 MB is the alternator itself, which generates the charging current. A regulator like the Mastervolt Alpha Pro III separately controls the charging curve; whether it is included in the scope of delivery is best clarified directly with Philippi support.
Who helps with integration into the Mastervolt system?
Philippi is a Mastervolt system partner and supports you from the selection of the appropriate alternator to the commissioning of the entire system with CMB, P-Bus and system monitors.
Inquire about the Mastervolt Alpha 24/150 MB at Philippi now – we will advise you on the appropriate engine connection and system integration.
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