C1251N

The C1251N is a Merlin Gerin Compact C-series molded case circuit breaker from Schneider Electric, rated for 1250A at 600V with 3 poles, designed to protect main and feeder circuits in industrial and commercial power distribution. With a standard interrupting rating of 45kA@415V, it can safely interrupt the high fault currents found on large electrical systems. The C1251N uses a solid-state electronic trip unit, the STR25DE, which provides long-time and instantaneous protection. The long-time function responds to sustained overloads with an adjustable delay, while the instantaneous function trips quickly on a short circuit, so the breaker can protect the circuit and still tolerate brief surges. Electronic trip units like this one give more precise, repeatable settings than a basic thermal-magnetic unit, which helps with coordination between upstream and downstream devices. Mechanically, the C1251N is a bolt-on breaker, and lugs are not included, so the cable connections are chosen separately to suit the installation. It measures about 28 pounds in weight, so it is typically bolted into switchgear or a large enclosure. Because this breaker is sold in several versions, including variants that come with load-side lugs, it is worth confirming the part number, trip unit, and terminals against your equipment before ordering. This makes the C1251N a practical choice for engineers and maintenance teams who need to replace a Merlin Gerin Compact breaker and keep an existing system running. Purchase the C1251N at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted circuit breakers, switchgear components, and electrical products from manufacturers like Square D, Schneider Electric, Merlin Gerin, Siemens, and Eaton, backed by a knowledgeable sales team ready to assist with technical questions, product selection, and support.