Eaton 0.3 → 1.2 A Motor Protection Circuit Breaker, 690 V ac / 7740143

Eaton Motor Protection Circuit Breaker - PKE Series. Eaton's PKE series of motor protection circuit breakers offer a wide adjustment range in a simplified product selection, making choosing the correct product easier, reducing inventory and transport related costs. The PKE motor protection circuit breakers complement the PKZ device family. This motor protection range of circuit breakers have precise and extremely long time stable tripping characteristic curves with tripping classes of greater than class 10. The PKE range are short-circuit proof rated to 100 kA (400V) up to 32 A and 50 kA (400V) to 65 A, this means that short-circuit calculations and prefusing are no longer necessary. With electronic wide range overload protection these circuit breakers offer an alternative to the bimetal solution for motor current of up to 65 A and provide protection from electrical faults such as an overload of high voltages, short circuits or relay shutdowns. The PKE series has an efficient modular design that allows use of standard components and minimises design engineering requirements. Accessories are available from the PKZM0 system and are ideally suited to a safe and logical control panel assembly. Accessories including auxiliary contacts, trip indicating auxiliary contacts, voltage release and shunt trips can be installed without tools and greatly reduce installation time. The PKE system can easily be incorporated into the SmartWire-DT system either individually or as a motor starter combination. Using this system the measurement and status data of the PKE can be sent directly to the control for processing or to a HMI for visualisation of the output circuit data. Features ; Benefits. Manually-actuated motor protective circuit breaker Rotating handle with clear indication of switch position, ON, OFF and TRIPPED Wide adjustment ranges Plug in trip blocks up 65 A Forms part of the xStart family of control gear products Compatible with the SmartWire-DT system to increases the levels of system availability by the transfer of process-relevant data Shares accessories with the PKZM0 system Standard trip block 1 - 4 A for PKE12 ; PKE 32: ; 774-0174 774-0174 Standard trip block 3 - 12 A for PKE12 ; PKE 32: ; 774-0162 774-0162 Standard trip block 8 – 32 A for PKE32: ; 774-0171 774-0171 Advanced trip block 0.3 – 1.2 A for PKE12 with connection to SmartWire-DT: ; 774-0178 774-0178 Advanced trip block 8 – 32 A for PKE32 with connection to SmartWire-DT: ; 774-0180 774-0180. What is a motor protection circuit breaker?. Electric motors need protection from phase unbalances, current overload and losses, circuit breakers or MPCBs offer motor protection and prevent short circuits by disconnecting the current. Thermal protection guards against overload, magnetic protection protects against short circuits and faults and phase protection guards against phase loss or imbalance. MCPs or motor circuit protectors only protect against short circuits and generally need an overload relay installing, whereas an MPCB doesn't usually need an overload relay offering magnetic protection and preventing thermal overload. MCPBs can also be integrated into a unit with other devices.