Rutland 1200 + 12 V Hybrid MPPT
Marlec Rutland 1200 + Hybrid MPPT Controller 12 V connections
Review the Marlec Rutland 1200 + Hybrid MPPT Controller 12 V connections, setup and installation requirements. This overview does not calculate cable or protection sizes.
- Nominal voltage
- 12 V
- Compatible systems
- 12 V
- PV open-circuit limit
- 50 V
Connection overview
Rutland 1200 + 12 V Hybrid MPPT connections.
See how this component fits into a system. Use the manufacturer’s installation instructions for the complete connections.
Installation notes
Before you install.
Open a question for model-specific guidance and sources.
Verified against the manufacturer's documentation (rev. Hybrid MPPT manual SM-469 Issue E.1 Part 2, 1 August 2019), checked 2026-10-01. Manufacturer documentation →
The catalog item includes the controller
The Rutland 1200 turbine produces three-phase power and requires its Hybrid MPPT Controller. The battery terminals shown here belong to that 12 V turbine/controller bundle. They must not be used to connect the bare turbine directly to a battery. The controller's two battery outputs and optional PV input have distinct roles. Neither the 35 A wind-only cable-table value nor the 55 A wind-plus-solar value establishes continuous wind generation. See system diagrams and cable tables, PDF p. 2.
Install the turbine and its cable
The turbine instructions require suitable mounting geometry and clearance for its 1,220 mm rotor. The controller table calls for 2.5 mm² turbine cable up to 5 m in a 12 V installation, increasing for longer routes. These three phase conductors are inside the catalog bundle boundary; their physical cable still needs to be installed and secured. Refer to turbine mounting, PDF p. 1 before designing the pole or arch.
Respect the battery connection restrictions
For wind only, the controller table specifies 6 mm² battery conductors within 1.5 m and a minimum 175 Ah C20 bank; additional solar changes the requirements. Marlec explicitly prohibits switches, relays, VSRs and fuses in these battery cables, relying on the controller's internal protection. Battery 1 must remain connected while generating. This restriction requires a complete manufacturer-specific protection layout; a generic fused source example is not appropriate. Never disconnect a running turbine from its controller/battery arrangement.
Connect and stop in the prescribed order
Connect Battery 2 before Battery 1 if both are used. Verify polarity and charging settings before starting. The controller has separate WG and PV stop controls; stop both and confirm their solid-red indications before battery disconnection. Optional solar must remain within 20 A and 50 V cold open-circuit voltage. Restart uses the documented three-second button actions. Check real charging under suitable wind rather than interpreting a controller or cable limit as generated current. See startup and shutdown sequence, PDF p. 1.
Technical reference
Specifications and terminal map.
Check the model, ratings and connection points against your own unit before choosing installation hardware.
Catalog specification
Wind turbine and required controller bundle. DC terminals belong to the controller, not the three-phase turbine. Wind generation is unpredicted; 35 A cable-table current is not a continuous output rating.
- Nominal voltage
- 12 V
- Compatible systems
- 12 V
- PV open-circuit limit
- 50 V
Terminal map
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
BATTERY 1 +
positive · output
BATTERY 1 −
negative · output
BATTERY 2 +
positive · output
BATTERY 2 −
negative · output
OPTIONAL PV +
positive · input
OPTIONAL PV −
negative · input
REMOTE BAT 1 +
signal · bidi
REMOTE BAT 2 +
signal · bidi
REMOTE TEMPERATURE
signal · bidi
A dash means a current rating is not specified here.
Sources and sizing method
Equipment specifications. Model details, ratings and terminal roles come from the catalog. Check your unit’s label and current manufacturer documentation for its exact revision.
Connection overview. This diagram explains the connection arrangement; it does not calculate cable sizes or protection for the installation. Follow the manufacturer’s complete wiring and protection instructions.
Read how the sizing worksNext step
Plan your installation with Rutland 1200 + 12 V Hybrid MPPT.
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