In summary, American Electrical offers four types of DIN rail mounted circuit breakers with three of them, the two AC versions and the DC version being one of the thinnest in the industry at 13 mm. The UL 1077 breakers are available in 1, 2, of 3 pole versions up to 50 A. The UL 489 breakers are available in 1 or 2 pole versions up to 25 A. The DC breakers are available in 1 pole versions up to 50 A. The Ground fault breakers are both UL 1077 and UL 1053 approved with all breakers having cost benefits as compared to fusing.