4 Pole RCBO 16A C16 30mA 6kA 400V 3-Phase + Neutral Breaker

Description

The 4 Pole RCBO 16A C16 30mA 6kA 400V 3-Phase + Neutral Breaker is an essential component for ensuring electrical safety and efficiency in 3-phase systems. Designed to protect against overloads and earth faults, this breaker is ideal for both residential and commercial applications.

What This Is For

This RCBO is specifically designed to safeguard electrical circuits by combining the functions of a circuit breaker and an RCD. It is suitable for use in industrial environments, commercial buildings, and high-demand residential setups where reliable protection is crucial.

Key Features

4 Pole design for comprehensive circuit protection
Rated current of 16A for handling moderate loads
30mA sensitivity for effective earth fault protection
6kA breaking capacity to manage short circuits
Rated voltage of 400V for robust performance in 3-phase systems

Technical Specs

Type: RCBO
Poles: 4
Rated Current: 16A
Rated Voltage: 400V
Breaking Capacity: 6kA
Earth Fault Sensitivity: 30mA
Dimensions: 4 Bays DIN Rail Mounted

4 Pole RCBO (C16, 30mA) – Technical Capability Breakdown

Right, this is a combined protection device — effectively an MCB + RCD in one unit, designed for 3-phase systems with neutral (4 pole). Here’s what it’s capable of in real-world terms:

Core Electrical Ratings

Current Rating: 16A

Protects circuits up to 16 amps continuous load

Trip Curve: C Curve

Trips at 5–10× rated current (80–160A)

Ideal for mixed loads (motors, transformers, site gear)

Voltage Rating: 400V AC (3-phase)

Suitable for standard UK/EU 3-phase + neutral systems

Breaking Capacity: 6kA

Can safely interrupt fault currents up to 6000 amps

Suitable for most commercial/light industrial boards

Protection Functions (This is where it shines)

Overcurrent Protection (MCB side)

Trips on: Overload (too much current over time)

Short circuit (instant high fault current)

Protects cables from overheating/fire risk

Earth Leakage Protection (RCD side) Sensitivity: 30mA Trip Time: ~0.1s

Trips when current leaks to earth (e.g. damaged cable, human contact)

Important:

30mA = personal protection level

This is what saves lives, not just equipment

4-Pole Switching (Critical Detail)

Disconnects:

L1, L2, L3 (all phases)

Neutral (N)

This is key for:

Balanced isolation

Avoiding floating neutral issues

Full disconnection in fault conditions

Typical Applications

3-phase distribution boards

EV charging infrastructure (especially upstream protection)

Site power / temporary power setups

Workshops with mixed loads

Generator-fed systems

Important Limitations / Considerations

6kA rating

→ Fine for most installs, but not for high fault level industrial sites (you’d want 10kA+)

30mA nuisance tripping risk

→ Sensitive protection = can trip if:

Multiple loads leak small currents

Long cable runs

EV chargers / inverters without proper coordination

Likely Type AC (based on label)

Detects standard AC leakage

Test Function

Orange “Press Monthly” button

Simulates a fault to verify RCD operation

Real-world tip:

If it doesn’t trip → it’s unsafe → replace immediately

Plain-English Summary

This unit is basically your all-in-one safety gatekeeper:

Stops cables burning (overload protection)

Stops massive faults exploding things (short circuit)

Stops people getting electrocuted (earth leakage)

Cuts everything, including neutral, in one go

That makes it ideal for 3-phase distribution where safety matters, especially when you want compact protection in a single module instead of separate RCD + MCB.

Compatibility & Safety Notes

This RCBO is compatible with standard 3-phase electrical systems. Ensure proper installation by a qualified electrician to maintain safety standards. Always adhere to local electrical regulations when using this product.

Frequently Asked Questions

What is an RCBO and how does it work?

An RCBO combines the functions of a circuit breaker and an RCD, providing protection against overloads and earth faults.

Can this RCBO be used in residential settings?

Yes, it is suitable for both residential and commercial applications where reliable circuit protection is needed.

What is the maximum load this RCBO can handle?

The RCBO is rated for a maximum load of 16A, making it ideal for moderate electrical demands.

Is professional installation required for this product?

Yes, it is recommended that a qualified electrician installs this RCBO to ensure safety and compliance with regulations.

What is the significance of the 30mA sensitivity?

A 30mA sensitivity means the RCBO can detect earth faults effectively, reducing the risk of electric shock.

Additional information

Phase	Three-phase

4 Pole RCBO 16A C16 30mA 6kA 400V 3-Phase + Neutral Breaker

Description

What This Is For

Key Features

Technical Specs