MP390, Miniature Circuit Breaker

MP390 Miniature Circuit Breaker - Siemens Electrical Protection The MP390 is a Siemens 3-pole miniature thermal magnetic circuit breaker designed for residential low voltage applications. It provides reliable circuit protection for load center mains, feeders, and miniature circuit breakers within 100 AMP, 3-phase output WML meter stacks. This device is suitable for electrical distributors and switchgear suppliers requiring HACR-rated breakers with a 240VAC voltage rating and a continuous current rating of 90A. It supports operation at ambient temperatures up to 40°C and operates at 50/60 Hz supply voltage frequency. Specifications Manufacturer: Siemens Model Number: MP390 Number of Poles: 3 Voltage Rating: 240 VAC Current Rating: 90 A Interrupt Rating: 10 kA Operating Temperature Maximum: 40 °C Supply Voltage Frequency: 50/60 Hz Standard Compliance: HACR Rated Mounting Type: Plug-In Product Weight: 0.9630 lb Features Miniature thermal magnetic trip mechanism for accurate circuit protection Designed specifically for 100 AMP, 3-phase output WML meter stacks Plug-in mounting for quick and secure installation in compatible load centers HACR rating suitable for heating, air conditioning, and refrigeration equipment Compatible with Siemens and Murray panelboards requiring MP-T type breakers Installation instructions support safe and code-compliant mounting and wiring Downloads & Links Data Sheet Installation/Operator