Published On: July 7, 2026380 words1.9 min read
KLOCKNER MOELLER ZMV-400-NZM is an original professional mechanical operating accessory designed for Klockner Moeller NZM series molded case circuit breakers. As a core matching control component, the ZMV-400-NZM realizes external manual operation, mechanical interlock and switch status control for 400A-class NZM circuit breakers. It is widely used in industrial power distribution cabinets, factory low-voltage power systems, commercial power distribution projects and mechanical equipment power control units, providing safe and reliable manual switching and protection auxiliary functions for low-voltage circuit breakers.
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Product Specifications

  • Brand: KLOCKNER MOELLER (Eaton Moeller)
  • Model: ZMV-400-NZM
  • Condition: New, Original Authentic
  • Availability: In Stock
  • Delivery Time: Within 3 working days after payment confirmation
  • Guarantee: 12-month professional warranty
  • Matching Specification: Adapted for NZM10 series 400A molded case circuit breakers, standard original matching accessory
  • Operating Temperature: -20°C to 70°C, suitable for standard indoor power distribution and industrial cabinet environments
  • Size/Weight: Standard accessory size, compact mechanical structure, perfect matching with original breaker installation dimensions
  • Function & Control: Supports external manual opening/closing operation, mechanical safety interlock, and breaker status indication

Key Features & Advantages

  • 100% Original Breaker Matching: The KLOCKNER MOELLER ZMV-400-NZM is professionally customized for NZM series 400A circuit breakers with strict factory size and mechanical parameter calibration. It achieves seamless mechanical docking with the original breaker, ensuring accurate linkage of operating mechanisms. It avoids jamming, loose operation and functional failure caused by mismatched accessories, and fully retains the original protection and switching performance of the circuit breaker.
  • Safe Mechanical Operation & Interlock Protection: Equipped with optimized mechanical transmission structure and safety interlock design, the KLOCKNER MOELLER ZMV-400-NZM provides stable and labor-saving manual switching operation. It features reliable mechanical locking function to prevent misoperation and accidental power-on, effectively improving the safety of low-voltage power distribution operation and maintenance, and protecting personnel and equipment from electrical risks.
  • High Mechanical Durability & Low Maintenance: Adopting high-strength industrial alloy materials and precision mechanical processing technology, the KLOCKNER MOELLER ZMV-400-NZM has excellent wear resistance and structural stability. It can withstand long-term frequent switching operations without mechanical failure. The simple and reliable structure requires almost no daily maintenance, greatly reducing the operational and maintenance costs of industrial power distribution systems.