Eaton FRBM4-C32/3N/003-A RCBO, 4-pole (3P+N), 32 A, 30 mA, Type A, C-curve, 6 kA

Electrical installations demand reliable protection against both overloads and residual currents to prevent equipment damage and ensure personal safety. The Eaton FRBM4-C32/3N/003-A combines residual current protection and miniature circuit breaker functionality in a single, space-saving 4-module unit. This RCBO is engineered to safeguard three-phase circuits with neutral, delivering precise tripping on earth leakage currents as low as 30 mA while handling rated currents up to 32 A. Its C tripping characteristic makes it ideal for circuits with moderate inrush currents, such as motors, lighting, and socket outlets in commercial and industrial environments.

Who is it for

This device is intended for electricians, panel builders, and facility managers who need compact, dependable protection for three-phase distribution boards. It suits applications in workshops, offices, data centres, and residential complexes where both overload and residual current protection are mandatory. The FRBM4 series is particularly valuable when space is limited but safety cannot be compromised.

Main features

• Combined residual current circuit breaker with overcurrent protection (RCBO) in a 4-module width
• 4-pole configuration (3P+N) for three-phase circuits with neutral
• Rated current 32 A, suitable for moderate to high loads
• Residual current sensitivity 30 mA, Type A for AC and pulsating DC fault currents
• C tripping characteristic for general-purpose circuits with inrush currents
• Breaking capacity 6 kA according to IEC/EN 61009-1
• DIN rail mounting with screw terminals for secure wiring
• IP20 protection for installation in distribution boards

Specifications

• Brand: Eaton
• Model: FRBM4-C32/3N/003-A
• MPN: 171002
• EAN: 4015081675067
• Product type: RCBO (Residual Current Circuit Breaker with Overcurrent Protection)
• Series: FRBM4
• Number of poles: 4 (3P+N)
• Rated current (In): 32 A
• Rated residual current (IΔn): 30 mA
• Residual current type: A
• Tripping characteristic: C
• Rated voltage (Un): 230/400 V AC
• Rated switching capacity (Icn): 6 kA
• Frequency: 50/60 Hz
• Number of module units: 4
• Mounting type: DIN rail
• Degree of protection: IP20
• Terminal type: Screw terminals
• Conductor cross-section solid: 1-25 mm²
• Conductor cross-section flexible: 1-16 mm²
• Operating temperature: -25 to +40 °C
• Standards: IEC/EN 61009-1

Tips

Always verify that the RCBO's rated current and tripping curve match the circuit's load profile. For three-phase systems with neutral, ensure correct connection of the neutral conductor to the dedicated terminal. Periodic testing of the residual current function using the test button is recommended to maintain safety. Install in an enclosure with appropriate IP rating for the environment.