MakerBase MKS MOS25 Heating Controller Module – 25A
Overview
The MKS MOS25 is an external MOSFET module designed for 3D printers to safely handle high-current loads such as heated beds or extruders. By offloading power from the main controller board, it protects against overheating, burnt connectors, and electrical failure. Compatible with both 12V and 24V systems, the MOS25 ensures stable and reliable heating control.
Key Features
- Designed for heated beds and high-power extruders
- Supports both 12V and 24V DC input
- Rated up to 25A continuous current
- Large heatsink for efficient cooling
- Easy connection with screw terminals
- Protects the mainboard from high-current stress
Technical Specifications
- Model: MakerBase MKS MOS25
- Operating Voltage: 12V or 24V DC
- Maximum Output Current: 25A
- Maximum Power: 300W at 12V (higher wattage possible at 24V within current limit)
- Control Signal Voltage: Compatible with 3.3V / 5V logic
- Dimensions: Approx. 60 × 50 × 40 mm
- Net Weight: ~35 g
- Cooling: Large aluminum heatsink for heat dissipation
Wiring & Connection
- Connect the power supply (12V/24V) to the MOS25 input terminals.
- Connect the heater load (heated bed or hotend) to the MOS25 output terminals.
- Connect the control signal input from the printer mainboard to the MOS25 signal pins (requires common ground).
- Ensure correct polarity and use thick wires to handle high current safely.
Important Notes
- Do not exceed 25A maximum current.
- Designed for DC loads only (not suitable for AC mains).
- Ensure proper ventilation or airflow if running near maximum current.
- Always double-check wiring polarity before powering on.
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