MG Energy Systems
MG Energy Systems Low Voltage Master BMS. 24-48V. 1000A - M12 CAN Connection
£2,250.00
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MGMLV481003
All in one 24 V and 48 V low voltage BMS with a 1000 A safety contactor and an uprated Pc+ pre-charge circuit (1.83 F) for larger inverter and drive DC-link capacitance.
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Collection or delivery in 1-2 weeks
Pickup available at Mercury Yacht Harbour
Usually ready in 2-4 days
Description
The MG Master LV 24-48V/1000A Pc+ is the all in one battery management system for 24 V and 48 V low voltage lithium installations, built around a 1000 A main safety contactor. As the control and protection heart of an MG lithium bank, it continuously monitors every cell and module over CAN-Bus through each battery's built-in slave BMS, and opens its internal safety contactor automatically to disconnect chargers and loads whenever a parameter leaves the safe operating window.
The Pc+ designation marks an uprated pre-charge circuit, with a maximum pre-charge capacity of 1.83 F at both 24 V and 48 V, well above the standard model's 250 mF at 48 V. This lets the Master LV safely pre-charge larger DC-link capacitances, such as big inverters and electric drives, without contactor sparking or welding. An integrated DC busbar, fuse holders for up to eight MEGA-fuses, cell and module balancing, NMEA2000 capable CAN-Bus over M12, and Bluetooth with the MG Connect app round out a compact, plug and play install suited to marine propulsion and hybrid systems.
PRODUCT DETAILS
- All in one BMS for 24 V and 48 V low voltage lithium systems (18 to 58 Vdc supply range)
- Uprated Pc+ pre-charge circuit rated 1.83 F at both 24 V and 48 V for larger DC-link capacitance
- 1000 A main safety contactor disconnects chargers and loads on any out of limit parameter
- Manages up to 48 RS modules or 96 LFP, HE, UHE or HP battery modules
- Integrated DC busbar with fuse holders for up to eight MEGA-fuses
- Cell and module balancing to maximise capacity and extend battery life
- CAN-Bus M12 communication, NMEA2000 capable, with Bluetooth and MG Connect app
- Compact ABS enclosure, IP22 rated, 8.6 kg, with programmable relay and remote start-stop
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Key specifications
| System voltage | 24 V and 48 V |
| Main safety contactor current | 1000 A |
| Maximum pre-charge capacity | 1.83 F at 24 V and 48 V (Pc+) |
| Supply voltage range | 18 to 58 Vdc |
| Maximum batteries | 48 RS modules, or 96 LFP / HE / UHE / HP modules |
| Data connection | CAN Bus M12 |
| Weight | 8.6 kg |
Electrical
| System voltage | 24 V and 48 V |
| Main safety contactor current | 1000 A |
| Supply voltage range | 18 to 58 Vdc |
| Maximum pre-charge capacity (Pc+) | 1.83 F at 24 V, 1.83 F at 48 V |
| Power usage active | 8.7 W |
| Power usage standby | 73 mW at 26.2 V, 138 mW at 52.4 V |
Battery configuration
| Maximum batteries connected | 48 battery modules of type RS, or 96 modules of type LFP, HE, UHE, HP |
| Balancing | Cell and module level |
Communication
| Data connection | CAN Bus M12 |
| Protocol | CAN-Bus, NMEA2000 capable |
| Wireless | Bluetooth with MG Connect app |
Protection & I/O
| Allow-to-charge (relay output) | 0.8 A at 60 Vdc, potential free |
| Allow-to-charge (switched voltage) | 13.5 V / 1 A, overcurrent and short circuit protected |
| Allow-to-discharge (relay output) | 0.8 A at 60 Vdc, potential free |
| Allow-to-discharge (switched voltage) | 13.5 V / 1 A, overcurrent and short circuit protected |
| Auxiliary output | 13.5 V / 1 A, overcurrent and short circuit protected |
| External status signal | 13.5 V / 140 mA, overcurrent and short circuit protected |
| Programmable contact (relay output) | 0.8 A at 60 Vdc, potential free |
| Emergency switch connection | Hardwired shutdown to open the main contactor |
Mechanical
| Enclosure material | ABS |
| Dimensions (L x W x H) | 426 x 225 x 117 mm |
| Weight | 8.6 kg |
| IP protection class | IP22 |
Environmental
| Operating temperature range | -20 to +50 °C |
| Humidity (non-condensing) | <= 95 % |
General
| Manufacturer | MG Energy Systems |
| Country of origin | Netherlands |
| HS code | 8537109199 |
| Shipping weight | 9.3 kg |
| Approvals | IEC-EN62619 (ES-TRIN) |
| EMC emission | EN-IEC 61000-6-3:2007/A1:2011/C11:2012 |
| EMC immunity | EN-IEC 61000-6-1:2007 |
| Low Voltage Directive | EN 60335-1:2012/AC:2014 |
| RoHS | EN 50581:2012 |
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What does the Pc+ designation mean on the Master LV 24-48V 1000A?
Pc+ marks an uprated pre-charge circuit. This unit pre-charges up to 1.83 F at both 24 V and 48 V, compared with 250 mF at 48 V on the standard model, so it can safely bring larger DC-link capacitances such as big inverters and electric drives up to voltage before the safety contactor closes, avoiding sparking or welding.
How is it different from the standard MGMLV481002?
Electrically the two are the same 1000 A, 24 to 48 V M12 BMS. The only difference is pre-charge capacity: the Pc+ (MGMLV481003) is rated 1.83 F at both 24 V and 48 V, while the standard MGMLV481002 is 1 F at 24 V and 250 mF at 48 V. Choose the Pc+ when the connected inverter or drive has a large input capacitance.
What batteries and system sizes does it support?
It manages MG lithium banks at 24 V or 48 V, up to 48 RS modules or 96 LFP, HE, UHE or HP modules, and can be combined with further Master LV units through a SmartLink MX to build large, redundant banks for marine propulsion and off-grid use.
