The datasheet for this connector only shows it rated for 3 amps.
													
																	12v 40w heater cartridge. 
								
	
		
	
																	9 99 these are standard heaters cartridges used in most 3d printers. 
																	40w temperature is can take up to 280 c resistance range 3 4 3 8oms standard resistance 3 6oms watts range 37 42w standard watts 40w. 
																	In a 12 volt printer that means that under max load the heater would have a current of 3 33 amps watts amps volts 40w 12v 3 3333a. 
																	9 15 free shipping on your first order. 
															
													
								
	
		
	
																	4 5 out of 5 stars 28 ratings. 
																	These heater cartridges are rated for 40w. 
																	Amazon s choice for 12v heater cartridge price. 
																	Winsinn removable 12v 40w heater cartridge 620 ceramic hotend works with creality ender 3 5 cr10 cr 10 cr10 anet a8 3d printer pack of 5pcs. 
															
													
								
	
		
	
																	Looking up the specs of the jst connector used it appears to be a smr 02v b or similar. 
																	304 stainless steel voltage. 
																	These come in 12v and 24v versions. 
																	Specifications of cartridge heater. 
															
													
								
	
		
	
																	Genuine e3d heater cartridge 12v 40w e heater 12v 40w by e3d. 
																	Details free returns. 
																	These are 40w versions and fit most 3d printers.