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Specification & Description
| Specification | Description |
|---|---|
| Part Number | ZM-25-PKZ2 |
| Alternative Part Number | ZM25PKZ2 |
| Manufacturer | Moeller |
| Product Type | Motor Protector Trip Block |
| Rated Uninterrupted Current (Iu) | 25 A |
| Setting Range of Overload Releases | 16 - 25 A |
| Setting Range of Short-Circuit Releases | 200 - 350 A |
| Short-Circuit Release Function | Non-delayed |
| Number of Poles | 3 |
| Max. Motor Rating AC-3 (220-240V) | 5.5 kW |
| Max. Motor Rating AC-3 (380-415V) | 12.5 kW |
| Max. Motor Rating AC-3 (440V) | 12.5 kW |
| Max. Motor Rating AC-3 (500V) | 15 kW |
| Max. Motor Rating AC-3 (660-690V) | 22 kW |
| Phase-Failure Sensitivity | According to IEC/EN 60947-1-1, VDE 0660 Part 102 |
| Approvals | UL 508, CSA-C22.2 No. 14, IEC 60947-4-1, CE marking |
| UL File No. | E36332 |
| CSA File No. | 12528 |
| CSA Class No. | 3211-05 |
The Moeller ZM-25-PKZ2 is a motor protector trip block designed to safeguard motors from overloads and short-circuits, ensuring optimal performance and longevity. This accessory is part of the PKZ2 system, which, despite its discontinuation in 2012, remains a reliable component in industrial control panels. With a rated uninterrupted current of 25A, it is suitable for a variety of motor sizes and applications.
The trip block features adjustable overload releases ranging from 16 to 25A, allowing for precise protection settings tailored to specific motor requirements. The short-circuit releases are adjustable from 200 to 350A, providing robust protection against sudden current spikes. The device is also sensitive to phase failure, complying with IEC/EN 60947-4-1 standards, making it suitable for the protection of EEx e motors.
The ZM-25-PKZ2 is engineered to accommodate motors with a maximum rating of 22kW at 660V/690V in AC-3 usage categories, ensuring compatibility with a wide range of industrial applications. Its compact design and ease of integration into existing systems make it a preferred choice for maintaining the integrity and efficiency of motor operations.
With its robust construction and precise setting capabilities, the Moeller ZM-25-PKZ2 is an essential component for industrial environments requiring reliable motor protection.
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Frequently Asked Questions
What is the function of this Motor Protector Trip Block?
The Motor Protector Trip Block is designed to protect motors from overload and short-circuit conditions. It features adjustable overload and short-circuit releases to ensure precise protection for your motor.
Can this trip block be used for single-phase motor applications?
Yes, it has single-phasing sensitivity according to IEC/EN 60947-4-1, making it suitable for protecting single-phase motors.
Is this trip block suitable for protecting EEx e motors?
Indeed, it is suitable for the protection of EEx e motors and comes with a PTB Certificate No.: 3.53-388.299.
What is the setting range for overload releases on this trip block?
The setting range for overload releases on the ZM-25-PKZ2 is adjustable from 16 to 25 Amperes.
What are the short-circuit release settings for this device?
The short-circuit release settings range from 200 to 350 Amperes, with an adjustable range of 8.5 to 14 times the rated uninterrupted current.
How many poles does this trip block have?
This trip block has 3 poles for comprehensive motor protection.
What is the rated uninterrupted current for this trip block?
The rated uninterrupted current for the ZM-25-PKZ2 is 25 Amperes.
How do I adjust the overload and short-circuit releases?
The overload and short-circuit releases can be adjusted using the dials or screws provided on the trip block, according to the motor's current requirements and protection needs.
What certifications does this trip block hold?
This trip block is UL listed, CSA certified, and adheres to IEC60947-4-1 standards, ensuring its reliability and safety for industrial use.
Can this trip block be used for heavy-duty starting motors?
Yes, for motors with heavy-duty starting, the rated operating current must be overdimensioned by specific factors during project engineering to ensure adequate protection.
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