2 Pole, 30A, 240V, Green toggles. The toggles are connected with a handle tie to achieve a 2 pole 240V breaker in one unit, the letter C designates a two pole. Zinsco was the original OEM manufacturer of this brand. These are obsolete and are only available in recondition. In the 1950's this was a very popular brand. They appear all over the USA in older homes, such as This Old House. In later years Sylvania purchased the brand, then later it was Challenger, then still it was Thomas & Betts. Today only a knock-off brand is made by Unique Breakers.