Eaton mRB4-20/3N/C/003-A Residual Current Circuit Breaker with Overcurrent Protection – 20 A, Characteristic Curve C, 30 mA
The Eaton mRB4-20/3N/C/003-A RCBO from the xPole series offers three-phase residual current and circuit breaker protection in a single device. It combines RCBOs and circuit breakers in just four modular units. Consequently, you save significant space in the distribution board compared to a separate RCBO solution.
This residual current circuit breaker (RCCB) operates with a rated current of 20 A and a tripping characteristic C (for inductive loads with higher inrush currents). The 30 mA residual current reliably protects people from dangerous electric shocks. The RCCB protection is Type A (pulse current sensitive). This means the device detects both sinusoidal AC residual currents and pulsating DC residual currents. Therefore, it is the right choice for circuits with electronic devices.
Therefore, this 3-phase residual current circuit breaker (RCBO) is particularly suitable for three-phase loads with high inrush currents. Furthermore, its C-curve is ideal for motors, heat pumps, and commercial machinery. You benefit from proven Eaton quality and a rated breaking capacity of 4.5 kA.
Technical specifications – mRB4-20/3N/C/003-A
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Model code (Eaton): mRB4-20/3N/C/003-A
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Catalogue number (SKU): 120677
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EAN: 4015081185078
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Number of poles: 3+N-pole
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Rated current: 20 A
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Trigger characteristic: C
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Rated residual current: 30 mA
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FI type: Type A (pulse current sensitive)
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Rated breaking capacity: 4.5 kA (according to IEC/EN 61009)
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Operating voltage: 400 V AC, 50 Hz
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Rated insulation voltage: 500 V
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Rated impulse withstand voltage: 4 kV
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Protection rating: IP20
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Width: 4 TE (division units)
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Connection cross-section: 1–25 mm² (single and multi-strand)
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Mounting: DIN rail (35 mm)
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Weight: 0.445 kg
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Power loss: 11.8 W
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Energy limiting class: 3
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Operating temperature: -25 °C to +40 °C
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Certifications: CE, RoHS compliant
The device is tested according to IEC/EN 61009 and CE marked. It also complies with the RoHS directive. Therefore, it meets all requirements for use in Austria and the EU.
Installation is simple thanks to the snap-in mounting on the DIN rail. No special tools are required. Additionally, conductor cross-sections from 1–25 mm² can be connected – covering most installations.
In summary, the Eaton mRB4-20/3N/C/003-A residual current circuit breaker with overload protection offers reliable personal and line protection in a single device. This saves you space, time, and wiring effort during installation. Consequently, it is the efficient solution for your distribution board.
