enblethen wrote:
The breakers should be available at most big box hardware stores.
I believe you are asking for a "twin" breaker" Not a double pole.
Lowes 20 amp tandem breaker
Best converter
50 years electrician and never heard of IOTA breakers. You will not find one. That is the name of the box. Pull one from your box and take it to Lowes or HD. There are about 5 brands that will fit. should be listed on the box cover or inside the box. They just snap in and out. Lift out the opposite side of the breaker from where the wires attach. Turn off the breaker before you remove it. You are looking for a Twin breaker not a double pole.