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

> Clean MotorCables product record generated from the Ashford/Luna product-evidence layer.

- Canonical URL: https://motorcables.co.uk/product/4-pole-rcbo-16a-c16-30ma-6ka-400v-3-phase-neutral-breaker/
- Product ID: 4769
- Brand: EARU
- Categories: Breakers and RCBO
- Price snapshot: £62.99
- Availability snapshot: instock
- Product modified: 2026-09-12T17:41:47Z

## Product-specific 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.

## Interpretation notes

- The engineering fields above are deliberately limited to unambiguous catalogue evidence.
- Do not infer missing phase, voltage, current, connector or compatibility facts.
- Price and availability can change; verify the canonical product page for a current purchase.