Recommendation for heater?

Hey,

I'm looking for a recommendation for an electric space heater. I live in my camper . Last year I bought a well reviewed space heater on amazon that kept flipping the circuit breaker switch. I returned it and settled with just the propane furnace. To help with the cost, I'm looking for a space heater that won't flip the switch. I'm assuming a lower wattage or amps one, but am kind of in the dark when it comes to electricity and how it works. If anyone has any input at all that would be appreciated. Especially if it's information about why space heaters are so ready to trip the breaker.