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The Phoenix Contact 1019948 is a miniature circuit breaker (MCB) designed for branch overload and short-circuit protection. It features a 50A current rating and a 277V voltage rating, with a 2-pole configuration.
This thermal magnetic breaker offers a width of 17.6 mm per pole and mounts on a standard 35 mm NS35 rail, making it suitable for various industrial and telecommunications applications. The TMC 8... series, to which this breaker likely belongs, is UL 489 Listed, providing robust protection. The TMC 7... series, also mentioned, is UL 1077 Recognized for supplemental protection.
Key features include a trip-free, snap-action mechanism that cannot be manually overridden during an overload situation, and visual status indication. Accessories such as auxiliary contacts, shunt trips, and busbars are available for expanded functionality. Both product lines carry the CE mark, indicating compliance with European standards.
Typical applications for these circuit breakers include protection for cables, motors, generators, transformers, thyristors, silicon rectifiers, computers, peripheral equipment, industrial process control systems, telecommunications equipment, and power supplies.
The current rating is 50A.
The voltage rating is 277V.
It has a 2-pole configuration.
It is a Thermal Magnetic breaker.
It is designed for DIN rail mounting.
The interrupt capacity is 10 kAIC at up to 277/480 V AC and 125 V DC.
The circuit breakers are available with B, C, and D trip curve options.