Siemens Marq 21 300A Breaker Feeder - 480V/3P
300A | 480V/3P | 400A Frame | 42kAIC | MCCB Protected
This Siemens Marq 21 300A breaker feeder MCC bucket is purpose-built for critical infrastructure. Featuring a 400A frame molded case circuit breaker rated at 480V with 42kAIC interrupting capacity, this single-compartment feeder provides reliable branch circuit protection and power distribution. The 300A trip rating ensures precise overcurrent protection, reducing downtime and improving operational efficiency. Ideal for mining operations, pulp and paper mills, and heavy industrial complexes, this plug-in bucket module allows rapid installation and service without de-energizing the entire MCC lineup. The Marq 21 platform supports standardized bucket replacement, reducing mean time to repair and reducing downtime and improving operational efficiency. Every unit ships fully tested and wired, meeting UL 845 and NEC Article 240/430 requirements.
