3D Printer Cartridge Heater 12V 40W RepRap
Part number: 3D10053D Printer & CNC Parts
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Prices updated: 13 Oct 2026
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About this product
A 12 V, 40 W cartridge heater for RepRap-style 3D printers, used to heat the hotend block. It is driven through the heater output of a controller board and needs a thermistor for temperature feedback.
Specifications
- Rated voltage
- 12 V
- Power
- 40 W
- Type
- Cartridge heater
- Compatible platform
- RepRap
Frequently asked questions
Does this heater need a thermistor?
Yes. The printer firmware needs a temperature sensor (thermistor) to regulate the heater. Do not run the heater without temperature feedback.
How do I connect it to my controller board?
Connect it to the heater output of a RepRap-style board such as RAMPS, observing polarity. At 12 V and 40 W, the heater draws about 3.3 A, so use wire that can carry that current.
