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

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

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.

Product ID: 395384100

Details

Brand
Bestol
Colour
White
Form factor
Stationary
Indoor/outdoor use
Outdoor
Special features
Adjustable

⚡12V AC/DC dual voltage

🔥Up to 50W high power output

🌡️Consistent 220°C surface temp

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$U2213

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Sold byAmazon UruguayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Stay warm, stay ahead — heat that never quits!

DURABILITY MEETS SAFETY - Engineered with high-temp insulation and long service life for worry-free operation.
PLUG PLAY CONVENIENCE - Compact 50x15mm design with 150mm leads makes installation effortless.
DUAL VOLTAGE FLEXIBILITY - Seamlessly compatible with both AC and DC 12V power sources for versatile use.
RAPID HEAT UP ZERO WAIT - Experience near-instant warmth with fast surface insulation heating.
PRECISION THERMAL CONTROL - Maintains a stable 220°C for reliable, consistent performance every time.

This 2-piece PTC heating element set delivers up to 50W of power at a consistent 220°C surface temperature, operating efficiently on 12V AC/DC. Designed with ceramic thermostatic material, it ensures rapid heating, stable temperature control, and long-lasting durability, making it ideal for precise heating applications in home and industrial settings.

Specifications

ASIN	B07VBDT8NL
Best Sellers Rank	#77,447 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #7 in Water Heater Replacement Heating Elements
Brand Name	Bestol
Color	White
Form Factor	Stationary
Fuel Type	Electric
Global Trade Identification Number	08846985146331
Heating Element	Radiant
Heating Method	Convection
Indoor Outdoor Usage	Outdoor
Item Dimensions D x W x H	12D x 15W x 50H millimeters
Item Weight	0.02 Kilograms
Max Temperature Setting	428 Degrees Fahrenheit
Min Temperature Setting	20 Degrees Celsius
Mounting Type	Floor Mount
Part Number	AAA710
Power Source	Corded Electric
Recommended Uses For Product	Office, Home, Garage, Desk, Patio, Camping, Tent, Garden, Greenhouse
Room Type	Living Room
Special Features	Adjustable Temperature

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