Three-Phase Protection Against Shock, Overload and Short Circuit in One Device
The Potric PR5-63LE 4P RCBO is a residual current breaker with overcurrent protection designed for three-phase installations. It detects earth leakage as low as 30mA and disconnects the circuit within milliseconds. It also protects against overloads and short circuits, so one compact unit replaces a separate RCD and MCB.
Because it switches all three phases and the neutral together, it gives full isolation of the protected circuit. This makes it a dependable choice for three-phase loads in homes, workshops, shops, and commercial buildings.
Why Choose the Potric PR5-63LE 4P RCBO
- Two-in-one protection: earth leakage (RCD) and overcurrent (MCB) protection combined, saving panel space and wiring time.
- 4-pole design (3P+N): switches all phases and the neutral together for complete isolation.
- 30mA sensitivity: designed for personal protection against electric shock.
- Individual circuit protection: a fault trips only the affected circuit.
- Built-in test button: lets you check the leakage protection regularly.
- Clear status indication: shows ON, OFF, or tripped at a glance.
- Easy installation: snaps onto a standard 35mm DIN rail.
- Two ratings available: 40A and 63A to suit different load requirements.
Choosing the Right Rating
- 40A: suitable for medium three-phase loads such as pumps, small motors, and air conditioning units, depending on cable size.
- 63A: suitable for heavier three-phase loads or sub-distribution circuits, provided the cable and installation are rated for it.
Always match the breaker rating to the cable cross-section and the load, as specified by a qualified electrician.
Typical Applications
- Three-phase residential and commercial distribution boards
- Workshops, small factories, and light industrial sites
- Pumps, compressors, and three-phase motors
- Air conditioning and heating systems
Frequently Asked Questions
What is the difference between the 2P and 4P RCBO?
The 2P version is for single-phase circuits (phase + neutral). The 4P version is for three-phase circuits (three phases + neutral).
What is the difference between an RCBO and an MCB?
An MCB protects against overload and short circuit only. An RCBO does the same and also detects earth leakage, protecting against electric shock.
Do I need a separate RCD with this breaker?
No. The RCBO already includes residual current protection for its own circuit.
How often should I use the test button?
We recommend testing it periodically, for example once a month.
Do I need an electrician to install it?
Yes. Installation must be carried out by a qualified electrician in line with local regulations.
About Potric
Potric supplies dependable electrical protection products designed for everyday safety and long service life.