Eaton PKZM0-6.3-PI Motor Protection Circuit Breaker, 3-Pole, 4-6.3 A, 690 V AC, 50 kA, DIN Rail 199156

With a rated short-circuit breaking capacity of 50 kA at 400 V AC, the Eaton PKZM0-6.3-PI motor protection circuit breaker delivers robust protection for industrial motor circuits up to 690 V AC. Its thermal overload release is adjustable from 4 to 6.3 A, while the fixed magnetic short-circuit release trips at approximately 14 times the rated current for rapid fault clearing.

Overview

The PKZM0-6.3-PI is a 3-pole motor protection circuit breaker designed for DIN rail mounting (35 mm) or screw fixing. It features screw terminals, a rotary ON/OFF handle, and a trip class 10 characteristic. The unit has an IP20 protection rating on terminals and IP00 on the front, and operates in ambient temperatures from -25 to +55 °C.

What stands out

• Adjustable thermal overload release: 4 - 6.3 A
• Fixed magnetic short-circuit release: approx. 14 x rated current
• High breaking capacity: 50 kA at 400 V AC
• 3-pole design for three-phase motor protection
• DIN rail or screw mounting for flexible installation

Technical details

• Rated operational voltage: up to 690 V AC
• Rated impulse withstand voltage: 6 kV
• Trip class: 10
• Connection: screw terminals
• Degree of protection: IP20 (terminals), IP00 (front)
• Ambient operating temperature: -25 to +55 °C
• Standards: IEC/EN 60947-4-1, VDE 0660
• Switching function: rotary handle (ON/OFF)
• No integrated auxiliary contacts (add-on modules available)

Our verdict

The Eaton PKZM0-6.3-PI is a reliable and compact motor protection solution for industrial applications, offering precise adjustable overload protection and high short-circuit breaking capacity in a DIN rail mountable package.