Shows a 5 - 50 w power consumption. does that mean they draw max w at start up and then ramp down as they reach max temp? if not please explain

Initially these PTC heating element will draw low current <1 amp for a few seconds and then they will draw nearly 4.5 amps for about 10 seconds and stabilizes to about 2 amps at maximum temperature. To make this more manageable I found ramping the voltage up to 12VDC from 9VDC keeps the current below 3 amps at all times but does increase the time to get to full temperature (<40 seconds) . You can do your own voltage profile to see what fits your application best.

How many amps does does one unit draw?

0.9A-4.5A-2.0A is the current swing.

If I power these a limited current 12v power supply (lets say 500milliamps) will that limit the temperature or will it simply not function?

These should just limit the temperature available with lower amperage. These type of devices should be able to vary the temperature based on the current provided. I have not put these in service yet, but that is what I am expecting while using these as a heater when combined with heat sinks.

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Q: How many amps does does one unit draw?

0.9A-4.5A-2.0A is the current swing.

Q: If I power these a limited current 12v power supply (lets say 500milliamps) will that limit the temperature or will it simply not function?

These should just limit the temperature available with lower amperage. These type of devices should be able to vary the temperature based on the current provided. I have not put these in service yet, but that is what I am expecting while using these as a heater when combined with heat sinks.

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🔥 Stay warm, stay ahead – power your projects with precision!

QUICK HEAT UP TIME - Reaches optimal temperature fast, saving you time and energy.
DUAL PACK EFFICIENCY - Get twice the heating power with 2 reliable PTC elements.
DURABLE CERAMIC BUILD - Engineered with high-temp ceramic for superior insulation and longevity.
PRECISION TEMPERATURE CONTROL - Maintains a steady 220°C for consistent performance every time.
UNIVERSAL VOLTAGE COMPATIBILITY - Works seamlessly on both AC and DC 12V systems for flexible use.

This 2-piece PTC heating element set delivers reliable, consistent heating at 220°C with 12V AC/DC compatibility. Crafted from durable ceramic material, these thermostatic heaters ensure rapid heat-up, stable temperature control, and long service life, making them ideal for various home and industrial heating applications.

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Brand	Bestol
Model Number	AAA710
Color	White
Product Dimensions	1.2 x 1.5 x 5 cm; 20 g
Voltage	12 Volts (DC)
Special Features	Adjustable Temperature
Item Weight	20 g

Bestol 2pcs PTC Heating Element 5W-50W AC DC 12V 220 Degree consistant Temperature Ceramic Thermostatic

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