Eaton's reliable and robust motor protection circuit breakers are the perfect solution for your motor protection needs, providing protection from electrical faults such as an overload of high voltages, short circuits or relay shutdowns.

Down-time of machinery can be detrimental to a business and its operations, Eaton's PKZM0 motor protection range of circuit breakers has been created and designed to act as an intermediary between your devices, protecting vital equipment in the event of unforeseen incidents. This reduces the amount of downtime of machinery to enable operations to continue running smoothly.

The PKZM0 motor protection circuit breakers are matched to the DIL contactor series making the ideal configuration or motor starter combinations. This motor protection range of circuit breakers has a short circuit breaking capacity rated to 150 kA up to 12 A and 50kA up to 32 A. Accessories including auxiliary contacts, trip indicating auxiliary contacts, voltage release and shunt trips can be installed without tools and greatly reduce installation time.

• Manually-actuated motor protective circuit breaker
• Rotating handle with clear switch position (ON and OFF)
• DIN-rail mounting
• Forms part of the xStart family of control gear products
• Rated operating voltage 690Vac
• Typical motor protection accessories – Shunt release 492-1709 & 492-1715, lockable rotary handle 244-0113

MPCBs are more critical now than ever. Most infrastructures now rely on a motor behind the scenes to power critical uninterruptible systems such as heating, ventilation and cooling. These systems are vital in ensuring business continues as usual, therefore must be protected against overcurrent's, thermal overloads and similar problems.

Use this dependable motor protection circuit breaker (MPCB) from Eaton to safeguard motors against overload and short circuits. For added convenience, it also functions as a motor on/off switch. A built-in isolator cuts off the current when a fault is detected, keeping you and your workplace safe from electrical hazards. It can accommodate a broad range of currents from 6.3 to 10 A and a high voltage supply of 690 V AC. You'll commonly find this product used for automation, as well as process control applications.

• Three poles for use in three-phase circuits
• Broad operating temperature range of -25°C to +40°C when enclosed, for use in demanding conditions
• Designed for a high number of operations and a long service life
• Ingress protection rating of IP20 for protection against solid objects 12 mm in size and greater

MPCBs are specifically designed to protect motors, while MCCBs are more general circuit-protection devices. While both MPCBs and MCCBs protect against overload and short circuits, MPCBs can also protect motors against phase loss and under-voltage faults.