295-1111-27987-1

Series:	295
Part Status:	Active
Lead Free Status / RoHS Status:	--
Breaker Type:	Magnetic (Hydraulic Delay)
Moisture Sensitivity Level (MSL):	--
Current Rating:	--
Number of Poles:	4
Actuator Type:	Lever
Illumination:	--
Illumination Voltage (Nominal):	--
Mounting Type:	Panel Mount

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Circuit Breakers

295-1111-27987-1 Application Field and Working Principle

Circuit breakers are devices used to protect electrical circuits from overload and short-circuit damage. The 295-1111-27987-1 model is a type of circuit breaker used to protect motors operating on 3-phase circuits, typically at 400V-415V and 50Hz. This particular circuit breaker is designed with a trip unit that includes both over current and overvoltage protection. The over voltage protection is operated by a two-element voltage detector, which monitors both the line-to-line voltage and the line-to-ground voltage and trips when either voltage exceeds the limit value. The over current protection is operated by a thermal-magnetic release, which is usually set to 5 times the motor full load current.The 295-1111-27987-1 circuit breaker is also equipped with short-circuit protection, triggered by the short-circuit current in the circuit exceeding the tripping level determined by the circuit breaker rating. When the current exceeds the tripping level, the spring-loaded contacts in the circuit breaker will rapidly and completely disconnect the circuit. The short-circuit protection is often supplemented with a current-limiting fuse, which reduces the peak current in a short-circuit to a safe level.The 295-1111-27987-1 circuit breaker also includes overload protection that is used to protect the motor from overheating due to prolonged operation above its rated current. The overload protection is typically set to operate at a current lower than the tripping level of the short-circuit protection, at around 350% of the motor full load current. When the motor current exceeds the rated current, the thermal element of the thermal-magnetic release starts to warm up. If the overload current persists for a certain amount of time, the thermal element will reach its setting and the circuit breaker will trip.In addition, the 295-1111-27987-1 circuit breaker is used to protect electric motors from being started or restarted too quickly. This feature is typically set at around 3 times the motor full load current. When the motor is started, the current increases rapidly, and if it exceeds the set value, the circuit breaker will trip and the motor will be prevented from starting.In summary, the 295-1111-27987-1 circuit breaker is designed to protect motors operating on 3-phase circuits from overload and short-circuit damage, as well as prevent them from being started or restarted too quickly. It includes over-current, over-voltage, short-circuit, and overload protection, all of which are designed to ensure the safe and reliable operation of the motor and circuit.

The specific data is subject to PDF, and the above content is for reference