MCCB NZMC3-A400 109666

NZMC3-A400 Circuit Breaker – Reliable Circuit Protection

The NZMC3-A400 automatic circuit breaker is a solid and compact solution for protecting electrical installations. Designed to operate in IEC systems, it offers flexible mounting and reliable performance in various applications. This 3-pole circuit breaker with a thermomagnetic release is a guarantee of safety for cables and devices.

Characteristics and Application

The NZM..-A series circuit breakers, to which this model belongs, are characterized by their versatility and the ability to expand with modular function groups. They are designed to protect circuits against overloads and short circuits. The rated continuous current of 400A and high short-circuit breaking capacity (36kA at 400V) make it an ideal choice for demanding industrial and commercial applications. Stationary technology with screw connection ensures convenient mounting and durable connections.

Advantages in Practice

• High short-circuit breaking capacity: 36kA at 400V guarantees effective protection of the installation even with high short-circuit currents.
• Wide range of overload release adjustment: from 320A to 400A allows precise adaptation to the load characteristics.
• Solid construction: ensures long-lasting and reliable operation in harsh environmental conditions (IP20).
• Flexible mounting: the ability to expand with modular function groups adapts the circuit breaker to individual needs.
• Safety of use: the thermomagnetic release protects against overloads and short circuits, minimizing the risk of damage and fires.
• Versatility: suitable for protecting various circuits, including motors, transformers and other electrical devices.
• Expandability: optional motor drive allows for remote control of the circuit breaker.

Technical Specifications

The NZMC3-A400 circuit breaker has three poles and is designed to operate in networks with a rated voltage of 690V AC. Its stationary construction with screw connection ensures durable electrical connections. The lack of a built-in motor drive and integrated short-circuit to ground protection does not limit its functionality, and an optional motor drive enables remote control. The rated continuous current is 400A, making it suitable for circuits with high power consumption. The overload release adjustment range is 320-400A, allowing precise adjustment of protection to the load characteristics. The circuit breaker does not have auxiliary contacts (normally closed, changeover or normally open) or a trip indicator. The short-circuit capacity Icu at 400V/50Hz is as high as 36kA, guaranteeing effective protection of the installation in the event of a short circuit.