The 1020039 is a thermal-magnetic miniature circuit breaker designed for supplementary protection in electrical circuits. It features a single pole configuration with a 3A current rating and D curve characteristic, suitable for use in UL 1077 applications. The device employs Snap-Action technology to reduce wear on internal contacts, enhancing durability. It is mounted on a DIN rail and connects via screw terminals, supporting a cross-section of 1 mm². The breaker is rated for 277 V AC and 60 V DC, with operational temperature ranges from -35°C to +70°C. Its compact design includes a lever actuator for easy operation and it is part of the TMC 7 series, offering reliable overload and short-circuit protection.
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