Eaton PKZM0-16 0.1-16A 3P
- Eaton PKZM0-16 3-pole motor circuit breaker for protection of three-phase motors against overload and short circuit. Current setting range 0.1-16 A with knob adjustment, DIN rail mounting.
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Eaton PKZM0-16 motor circuit breaker, 0.1-16 A, 3-pole
Eaton's PKZM0-16 motor circuit breaker is a compact motor protection device that combines short-circuit and overload breaking functions in a single apparatus. It provides reliable protection for three-phase motors in apLication of industrial and commercial applications, enabling precise current setting and rapid shutdown in emergency situations.
- Current setting range of 0.1 to 16 A with precise knob adjustment
- Integrated short-circuit and overload protection for three-phase motors
- Compact housing that allows installation in switchboards and control cabinets
- Possibility to use additional auxiliary contacts and mounting accessories
- Clear on/off status indicator and manual reset after tripping
- Adapted for DIN rail mounting with high mechanical resistance
Application and protective functions
Eaton PKZM0-16 motor circuit breaker is designed for starting and protecting asynchronous motors in low-voltage installations. It integrates the function of a short-circuit breaker with a thermal overload trip, thus eliminating the need for separate protection solutions in the motor circuit. The device provides protection for cables and motors against the effects of long-term overloads, rotor blockage and phase-to-phase short circuits. It works well in apLications such as pumps, fans, conveyor belts, compressors or machining machines where a quick response to abnormal operating conditions is required.
The adjustable current range allows the setting to be matched to the motor's rated current, and the trip characteristic ensures selective interaction with other plant components. The circuit breaker has a manual override function and an interlock to prevent accidental reset when the protections are tripped. The direct contact disconnection mechanism ensures safe circuit interruption in the event of an overload or short circuit, and clear markings on the housing facilitate correct selection and installation.
Design, installation and accessory compatibility
The PKZM0-16 is designed as a modular apparatus for mounting on a standard DIN rail, which facilitates integration in control cabinets and switchboards. The device has a three-pole current path with terminals adapted to cable cross sections typical for the power of the motors served. The housing is made of heavy-duty insulating plastic that meets the requirements for electrical safety and resistance to environmental conditions typical of industry.
The circuit breaker is compatible with a wide range of Eaton accessories, including auxiliary and signaling contacts, front and door drives, terminal covers, and components for easy connection and grouping of apparatus. This makes it possible to create extensive control and status signaling systems for motors in industrial automation. Thanks to the well-thought-out design, it is possible to achieve high switching capacity and long mechanical and electrical life.
Safety expLoatation and reliability
The PKZM0-16 motor circuit breaker meets the requirements of the relevant standards for the protection of motors and low-voltage apparatus, which guarantees safe operation in typical apLications in industry. Thermal protection responds to long-term overloads, protecting motor windings from overheating, while electromagnetic protection ensures rapid shutdown in the event of a short circuit, minimizing ciepLne and dynamic effects in the circuit.
The device is designed for high reliability, even with frequent motor starts and shutdowns. Stable tripping parameters over a wide range of expLoative conditions and a robust mechanical design reduce the risk of unwanted tripping and failure. The circuit breaker can be used as a primary protection element in new installations and as a replacement in modernized drive systems.
| Parameter | Value / description |
|---|---|
| Product type | Motor circuit breaker |
| Series | PKZM0 |
| Model | PKZM0-16 |
| Number of poles | 3 |
| Current setting range | 0,1-16 A |
| Type of protection | Thermal-magnetic (overload and short-circuit) |
| Application | Protection and control of three-phase motors |
| Functions | Manual on/off, tripping on overload and short circuit, manual reset |
| Mounting type | DIN rail mounting |
| Expandable | Auxiliary contactors, signaling contactors, front/door drives, mounting accessories |
| Status indicator | Visual indicator of on/off/activated position |
| Housing | Insulating plastic for industrial applications |
| Environmental intended use | Low voltage industrial and commercial installations |
| Network type | Three-phase AC |
| Setting element | Current setting knob with clear scale |
| Cable protection function | Yes, cable and motor winding protection |
| Designed loads | Pumps, fans, conveyors, compressors, processing machines and other drives |
| Possibility of cooperation with automation | Yes, via auxiliary and signaling contacts |
The Eaton PKZM0-16 motor circuit breaker provides a robust and flexible solution for the protection and control of motors in demanding apLications in industry. With an adjustable current range and a wide range of accessories, it enables the construction of reliable, customized drive systems.
FAQ (customer)
- Q: What is the current setting range of the Eaton PKZM0-16 motor protective circuit breaker?
A: The PKZM0-16 offers an adjustable current setting range from 0.1 A up to 16 A, allowing precise adaptation to the motor’s rated current. - Q: Can I mount this breaker on a standard DIN rail?
A: Yes, the PKZM0-16 is designed for snap-on mounting on standard DIN rails used in control panels and distribution boards. - Q: Does the device protect only against overloads or also against short circuits?
A: The breaker provides both thermal overload protection and magnetic short-circuit protection in a single compact unit. - Q: Is it possible to add auxiliary contacts to this breaker?
A: Yes, Eaton offers auxiliary and signal contacts, as well as other accessories, that can be easily attached to the PKZM0 series. - Q: Can I use this breaker for any three-phase motor?
A: You can use it for three-phase motors whose rated current falls within the 0.1–16 A setting range and that compLy with the breaker’s utilization category and appLication limits. - Q: How do I know if the breaker has tripped due to a fault?
A: A clear status indicator on the front shows the operating position, and after a trip, the device must be reset manually, making the fault condition visible.
FAQ (expert)
- Q: Which utilization categories does the PKZM0-16 support for motor protection?
A: The PKZM0 series is intended for motor protection in typical AC-3 appLications; detailed utilization category data and maximum motor power per voltage level are specified in the official Eaton documentation and selection tables. - Q: What is the coordination type with upstream protective devices?
A: Coordination type and selectivity with upstream fuses or circuit breakers depend on the chosen combination; Eaton publishes coordination tables specifying permissible short-circuit levels and device pairings. - Q: Can the PKZM0-16 be combined with contactors for direct-on-line starting?
A: Yes, it is commonly used together with suitable Eaton contactors to build motor starters; mechanical and electrical compatibility is documented in Eaton starter configuration guides. - Q: Are there accessories for door coupLing and rotary operating handles?
A: Yes, the PKZM0 series supports front-mounted and door-coupLing rotary handles that allow operation from the enclosure door while the breaker is mounted inside. - Q: How is the thermal trip curve affected by ambient temperature?
A: As with other thermal-magnetic devices, the overload trip characteristics depend on ambient temperature; correction factors and derating curves are provided in Eaton’s technical manuals. - Q: Does the PKZM0-16 support remote indication of trip events?
A: Remote indication can be achieved via additional auxiliary or signal contacts that change state when the breaker trips or changes position.
Reviews
- Reliable motor protection device that has performed consistently in our pump control panels.
- Compact dimensions and DIN-rail mounting make it very convenient for dense control cabinets.
- Clear current setting scale and operating handle simpLify commissioning and adjustments.
- Good compatibility with Eaton contactors; assembling motor starters is straightforward.
- Robust construction suitable for industrial environments with frequent switching operations.
- Auxiliary contacts and handle accessories provide flexibility in control and signaling design.
- Thermal-magnetic protection has proven effective against both overloads and short circuits in our appLications.
- Overall a cost-effective and dependable choice for small and medium power motors.
- Easy to repLace older breakers during retrofit projects thanks to standardized mounting.
- Trip indication and manual reset make fault diagnosis and restart procedures very simpLe.