I have a newer all electric manufactured home with a Siemens 200 amp service panel. I'd like to replace my standard water heater with a 24Kw tankless water heater that requires two 50 amp 240v double pole breakers. I only have two side-by-side regular slots available in the panel. Does Siemens make a 50/50 Quad Circuit Breaker that will fit in the two slots?