Legrand MCB Circuit Breaker 419921B 4P 40A 6kA

Legrand MCB Circuit Breaker 419921B 4P 40A 6kA

The Legrand MCB 419921B 4P 40A 6kA is a miniature circuit breaker designed to provide protection against overloads and short circuits in electrical systems. This product belongs to Legrand’s MCB (Miniature Circuit Breaker) range and features a 4-pole design, suitable for three-phase electrical systems, offering protection for all three phases and the neutral wire. With a rated current of 40A and a short-circuit breaking capacity of up to 6kA, this breaker is ideal for applications requiring high current and robust protection.

Its compact and modern design makes it suitable for various environments, from offices and residential buildings to light industrial facilities.

Key Features

• Overload and Short-Circuit Protection:
  With a breaking capacity of up to 6kA, this MCB can quickly interrupt the circuit in case of overload or short-circuit, protecting electrical devices and systems from damage.

• High Breaking Capacity:
  The device provides up to 10kA breaking capacity at 230V and 6kA at 400V, meeting safety requirements for both residential and industrial electrical systems.

• Compact and Easy Installation:
  The lightweight and compact structure allows for easy installation in standard electrical enclosures, saving space and optimizing layout.

• Rated Current 40A:
  Designed to handle a maximum current of 40 amperes, suitable for industrial and commercial circuits that operate under high and continuous loads.

• High Durability and Stability:
  Manufactured with advanced technology by Legrand, ensuring long service life, reliable operation, and stability even under harsh environmental conditions.

• Complies with International Standards:
  The Legrand MCB complies with IEC 60898 international safety and quality standards, ensuring maximum protection and safety for users.

Technical Specifications

• Product Code: 419921B

• Rated Current: 40A

• Rated Voltage: 400V

• Mounting Depth: 44 mm

• Trip Curve: C

• Number of Poles: 4

• Rated Insulation Voltage (Ui): 400V

• Rated Impulse Withstand Voltage (Uimp): 4kV

• Rated Short-Circuit Breaking Capacity (Icn) per EN 60898:

  • 10kA at 230V

  • 6kA at 400V

• Rated Ultimate Short-Circuit Breaking Capacity (Icu) per IEC 60947-2:

  • 10kA at 230V

  • 6kA at 400V

• Voltage Type: AC

• Frequency: 50–60Hz

• Current Limiting Class: 3

• Pollution Degree: 2

• Protection Degree (IP): IP20

• Dimensions (H x W x D): 88.8 × 71.2 × 77.3 mm

• Impact Resistance (IK): IK04

• Storage Temperature: -25°C to +60°C

• Color: Grey (RAL 7035)

Contact for Consultation

We specialize in supplying a wide range of Legrand electrical equipment, including cable systems, sockets, brackets, electrical panels, and complete integrated solutions for construction and infrastructure projects.

We are committed to providing genuine Legrand products, imported directly from the manufacturer, complete with full documentation, warranty, and international-standard technical support.

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