The Philippi DC charge current limiter RCB ADJ is an adjustable, electronic charge current limiter for 12 V and 24 V on-board electrical systems that limits the charging current from the alternator to the lithium service battery between 30 and 120 A. It protects the alternator from thermal overload and is the smart alternative to a charge booster for smaller systems.
- Protects the alternator from overload by specifically limiting the charging current to the lithium battery
- Current limit continuously adjustable between 30 and 120 A via a rotary knob – flexibly adaptable to the performance of the respective alternator
- Operates similarly to a battery isolator, but with limited instead of full charging current – protecting both the alternator and the on-board electrical system
With the increasing proliferation of lithium batteries (LiFePO4) on board, compatibility between different battery types has become a central issue. If a lead-acid starter battery meets a lithium service battery, special charge management during alternator operation is required – this is precisely where the Philippi RCB ADJ comes in. The maximum charging current can be continuously set between 30 and 120 A via the rotary knob; it is recommended to continuously draw a maximum of 60% of the alternator's nominal charging power (for a 100 A alternator, this means a limit of around 60 A for the service battery). The technology is based on a low-frequency switching mode with stabilized output charging current and also offers protection against back voltage to prevent damage to the alternator due to overload.
Technical Data
| Order No. | 7 0009 1090 |
| Nominal Voltage | 12 + 24 V |
| Current Limit | 30–120 A adjustable |
| Alternator Current | max. 200 A |
| Switch-on Voltage 30 s (90 s) | 13.6 V (13.0 V) / 27.2 V (26.0 V) |
| Switch-off Voltage 10 s (30 s) | 12.4 V (12.7 V) / 24.8 V (25.6 V) |
| Current Consumption | 1.2 mA |
| Connection Terminal | M8 |
| Dimensions (L x W x H) | 159 x 100 x 36 mm |
Compatibility
The Philippi RCB ADJ is equally suitable for 12 V and 24 V on-board electrical systems (nominal voltage 12 + 24 V) and is designed for alternators up to 200 A. It is particularly suitable for on-board electrical systems with mixed battery technologies, such as a lead-acid starter battery in combination with a lithium service battery.
Frequently Asked Questions
What is the adjustable range for the current limit?
The current limit of the RCB ADJ is continuously adjustable from 30 to 120 A via a rotary knob.
For which on-board electrical system voltages is the RCB ADJ suitable?
For 12 V and 24 V on-board electrical systems, the nominal voltage is 12 + 24 V.
What is the maximum alternator current the RCB ADJ can handle?
Maximum 200 A alternator current.
To what value should I set the current limit?
It is recommended to continuously draw a maximum of 60% of the alternator's nominal charging power – for a 100 A alternator, this means a limit of around 60 A for the lithium service battery.
Order your Philippi DC charge current limiter RCB ADJ now or request advice on managing your lithium battery.
⚠️Safety data sheet can be found under Downloads!
Downloads
Deutsche Downloads
