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Circuit breakers

xPole Combined RCD/MCB Device mRB64/M4-PT, 3+N-pole with neutral conductor

This residual current operated circuit breaker with integrated overcurrent protection in 3+N pole is a high-quality residual current circuit breaker and miniature circuit breaker combination with line voltage-independent tripping and a wide variety of rated tripping currents. The breaking capacity versions are 6kA and 10kA. This type is specifically for applications in British Standard distribution systems with permanently connected neutral conductors.
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Rated currents
up to 32 A
Tripping characteristics
B, C and D
Rated Breaking Capacity
6 and 10 kA

Core features

  • Combined RCCB/MCB device
  • Fault current tripping indicator white – blue
  • Comprehensive range of accessories suitable for subsequent installation
  • Type-A: Protects against special forms of residual pulsating DC which have not been smoothed
  • This breaker has a pig tail for British standard applications
  • 3+N pole
  • Line voltage-independent tripping
  • Compatible with standard busbar
  • Twin-purpose terminal (lift/open-mouthed) above and below
  • Busbar positioning options (above or below)
  • Free terminal space despite installed busbar
  • Guide for secure terminal connection
  • Switching toggle (MCB component) in color designating the rated current
  • Contact position indicator red - green

Suitable RCD/MCB types for all contingencies

Wiring the circuits separately increases the operational safety of an electrical system.

  • Type A: Protects against special forms of residual pulsating DC which have not been smoothed.
  • Type AC: This type only detects pure sinusoidal AC residual currents.

All in one device

Eaton's high quality standard guarantees comprehensive personal- and equipment protection by combining the functionalities of a residual current circuit breaker with those of a miniature circuit breaker. This means our customers spend less time and effort wiring while still protecting the system against overload, short circuit and residual current. Using Eaton's line of RCBOs will increase the safety and reliability of your electrical system.

IEC Standard quality design

The RCBO line adheres to the IEC standard of IEC/EN 61009 – an IEC region as well as European standard for RCDs with integrated overcurrent protection (RCBOs). This applies to both our line voltage-independent and our line voltage-dependent RCDs/MCBs with rated currents up to 125 A for fixed installations.

Our RCBOs meet all the requirements of IEC/EN 61009. All required standards are printed on the devices.

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Eaton is an intelligent power management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we’re accelerating the planet’s transition to renewable energy and helping to solve the world’s most urgent power management challenges.
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