Eaton PKZM01-0.63 motorový istič, 3-pólový, 0,63 A 278478

The Eaton PKZM01-0.63 is a compact motor protective circuit breaker that stands out for its precise thermal-magnetic protection in a 45 mm-wide DIN-rail housing. Unlike generic MCBs, it offers adjustable overload release from 0.4 A to 0.63 A, making it ideal for protecting small motors and transformers where exact current matching is critical.

Highlights

• 3-pole switching for three-phase circuits up to 690 V AC
• Thermal overload and magnetic short-circuit release in one device
• Adjustable overload setting range: 0.4 – 0.63 A
• High short-circuit breaking capacity of 50 kA at 400 V
• Screw terminals for secure wiring, DIN rail or screw mounting

In daily use

Install the PKZM01-0.63 on a standard 35 mm DIN rail and set the overload dial to the motor's full-load current. The thermal release responds to sustained overcurrents, while the magnetic trip reacts instantly to short circuits at approximately 14 times the rated current. The IP20 terminal protection and wide operating temperature range (-25 to +55 °C) suit most industrial control panels.

Full specifications

• Device type: Motor protective circuit breaker
• Number of poles: 3
• Rated operational current (Ie): 0.63 A
• Overload release setting range (Ir): 0.4 – 0.63 A
• Rated operational voltage (Ue): up to 690 V AC
• Rated insulation voltage (Ui): 690 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Short-circuit breaking capacity (Icu) at 400 V: 50 kA
• Magnetic trip current (Ii): approx. 8.82 A (14 x Ie)
• Release type: Thermal-magnetic
• Mounting type: DIN rail (35 mm) / screw mounting
• Degree of protection: IP20 (terminals)
• Connection type: Screw terminals
• Standard compliance: IEC/EN 60947-4-1, VDE 0660
• Ambient operating temperature: -25 to +55 °C
• Rated frequency: 50/60 Hz
• Overload protection: Yes (thermal)
• Short-circuit protection: Yes (magnetic)

Final note

For reliable motor protection in compact spaces, the PKZM01-0.63 delivers precise adjustment and robust performance.