140-CMN-4000

The 140-CMN-4000 circuit breaker operates with standard 3-phase motors and back-up fuses. This motor protection circuit breaker is designed and manufactured by Allen-Bradley and it complies with standards such as the UL 508, EN60947-2, and CE standards. The Bulletin 140-CMN circuit breaker provides functions such as overload protection, switching, disconnect for motor branch circuit, and branch-circuit/short-circuit protection. The circuit breaker features phase-loss protection with a differential release and a magnetic release with a fixed setting. The 140-CMN-4000 circuit breaker has a maximum current rating of 90 Amps and it features a Class 10 trip rating. The circuit breaker is available with accessories such as an external rotary operator, trip indication contacts, and auxiliary contacts. The rated operational current of the circuit breaker is 40 Amps while the magnetic release current is 560 Amps.

The rated insulation voltage of the 140-CMN-4000 circuit breaker is 690 Volts/600 Volts. This circuit breaker has a rated service short circuit breaking capacity of 8 kiloAmps. The rated frequency is 40 to 60 Hertz. The ambient operating temperature of the unit is from -25 to 80 degrees Celsius (-13 to 140 degrees Fahrenheit) while the storage temperature is from -25 to 80 degrees Celsius (-13 to 176 degrees Fahrenheit). The average mechanical lifespan of the 140-CMN-4000 circuit breaker is 30,000 operations while the electrical lifespan is 5000 operations. The switching frequency is a maximum of 20 operations per hour. The 140-CMN-4000 circuit breaker has an IP2X protection class from the front when the terminal is wired and it features a shock resistance of 30 g for the duration of 11 milliseconds. The weight of the 140-CMN-4000 circuit breaker is 1.84 kilograms or 4 pounds.