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ZM-1-PKZ2
Klockner-Moeller ZM-1-PKZ2 available at EU Automation. Get in touch today for a quick price.
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What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The Klöckner-Moeller ZM-1-PKZ2 is a three-pole motor-protective trip block designed for use with the PKZ2 circuit-breaker system. It features an adjustable overload setting range of 0.6 to 1 A and an adjustable short-circuit release range of 8 to 14 A. Single-phasing sensitivity helps provide reliable motor protection, while the adjustable settings allow the module to be matched to the connected motor’s operating requirements. Its modular design makes it suitable for motor control panels, industrial machinery and electrical distribution applications.
| Specification | Description |
|---|---|
| Manufacturer | Klöckner-Moeller |
| Part Number | ZM-1-PKZ2 |
| Alternative Part Number | ZM1PKZ2 |
| Article Number | 028979 |
| Product Type | Motor-protective trip block |
| Compatible Series | PKZ2 motor-protective circuit-breaker system |
| Number of Poles | 3 |
| Rated Uninterrupted Current | 1 A |
| Adjustable Overload Setting Range | 0.6–1 A |
| Short-Circuit Release Setting Range | 8–14 A |
| Overload Release Adjustment | 0.6–1.0 × rated uninterrupted current |
| Short-Circuit Release Adjustment | Approximately 8.5–14 × rated uninterrupted current |
| Factory Short-Circuit Setting | 12 × rated uninterrupted current |
| Phase-Loss Response | Single-phasing sensitivity |
| Applicable Standard | IEC/EN 60947-4-1 |
| Motor Application | Designed to provide adjustable overload and short-circuit protection for three-phase motors |
| Suitable Basic Unit | Klöckner-Moeller PKZ2 |
| Installation Format | Modular trip block for integration with a compatible PKZ2 assembly |
What type of component is this?
It is a three-pole motor-protective trip block designed for use with the PKZ2 motor-protective circuit-breaker system.
What is the adjustable overload setting range?
The overload release can be adjusted from 0.6 A to 1 A, allowing it to be matched to the rated current of a suitable motor.
What is the short-circuit release setting range?
The adjustable short-circuit release range is 8 A to 14 A. The catalogue data indicates a factory setting equivalent to 12 times the 1 A rated uninterrupted current.
How many poles does the trip block have?
The ZM-1-PKZ2 has a three-pole configuration for use in three-phase motor circuits.
Does it provide both overload and short-circuit protection?
Yes. The unit combines an adjustable overload release with an adjustable magnetic short-circuit release.
Is it sensitive to phase loss?
Yes. The catalogue identifies the trip block as having single-phasing sensitivity in accordance with IEC/EN 60947-4-1.
What is the rated uninterrupted current?
The rated uninterrupted current is 1 A.
Which circuit-breaker system is it intended for?
It is intended to operate as part of the PKZ2 motor-protective circuit-breaker system and should be paired with compatible PKZ2 components.
Can the current setting be selected to match a motor?
Yes. The overload dial can be set within the 0.6 A to 1 A range according to the motor nameplate current and the requirements of the installation.
What motor sizes can it be used with?
The applicable motor rating depends on supply voltage. Catalogue examples range from approximately 0.12 kW at 220–240 V to 0.55 kW at 660–690 V, subject to the motor's rated current remaining within the adjustable range.
Is it suitable for EEx e motor applications?
The catalogue lists this trip-block range as suitable for protecting EEx e motors. For such installations, the 95/96 normally closed contact must be used to de-energise the associated contact module or contactor.
What should be checked before fitting the component?
Confirm that the installation uses a compatible PKZ2 basic unit, that the motor rated current falls between 0.6 A and 1 A, and that the required short-circuit setting is within the available 8 A to 14 A range.
- Motor overload protection in industrial control panels
- Short-circuit protection for three-phase motor circuits
- Protection of motors with rated currents adjustable from 0.6 to 1 A
- Use with PKZ2 motor-protective circuit-breaker assemblies
- Isolation of motors following overload or phase-loss conditions
- Protection of pumps, fans and small conveyor drives
- Integration into machinery and process-control installations
- Motor starter applications requiring adjustable trip settings
- Replacement of an existing ZM-1-PKZ2 trip block
- Protection of EEx e motors in suitable installations
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
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Customer reviews
steve
Daniel
Excellent customer service...
Alex Bailey is my main point of contact at EU Automation...he is extremely friendly, has exceptional customer service skills and always offers great pricing & lead times.
2 months ago
Jerry Schrink
Tom Higgins provided amazing service
Tom Higgins provided great prompt service. I contacted Tom by phone and within 10 minutes there was a quote in my in box. WOW Thank you Tom and Thank you EU Automation!
2 months ago
Paulo Pereira
Excellent service and communication…
Excellent service and communication from Alex Bailey. He truly goes above and beyond to ensure his clients are 100% satisfied. The entire process was seamless, and his attention to detail made a huge difference. Highly recommended for anyone looking for amazing service!
2 months ago
Gary
Tom Higgins did a great job at getting…
Tom Higgins did a great job at getting us the part we needed. He saw a concern with the part a verified before shipping.
3 months ago
Lessle Smith
Thomas Higgins has gone above and…
Thomas Higgins has gone above and beyond to make things happen for my facility. His customer service and knowledge were an asset in helping me with my order and the logistics challenges!
4 months ago
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