3-pole 6kA
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3-Pole Circuit Breakers 6kA – Professional Miniature Circuit Breakers for 3-Phase Installations
Our 3-pole 6kA miniature circuit breakers (MCBs) are high-quality line protection devices specifically developed for three-phase electrical systems (400 V). They reliably detect overloads and short circuits and disconnect all three phases simultaneously, providing comprehensive protection for cables, wires, installations, and connected equipment.
Thanks to their robust design and compliance with DIN EN 60898-1 and VDE 0641-11, these circuit breakers are ideal for professional users including electrical contractors, construction companies, renovation firms, industrial plants, research institutions, and vehicle conversion specialists.
Advantages of 3-Pole 6kA Circuit Breakers
Unlike 1-pole or 2-pole versions, 3-pole circuit breakers deliver full protection in balanced three-phase circuits. With a 6 kA breaking capacity, they offer excellent safety for most standard installations in residential, commercial, and light industrial applications where moderate short-circuit currents are expected.
They feature precise tripping characteristics (B or C), easy DIN-rail mounting, and a long service life.
Applications – Practical Use for Professionals
3-pole 6kA circuit breakers are used wherever reliable protection of three-phase consumers is required. Typical applications include:
- Electrical installation & service companies: Protection of main and sub-distribution boards, machinery connections, and lighting circuits in commercial buildings.
- Construction & renovation companies: Temporary power supply on construction sites and protection of power tools and equipment during refurbishments.
- Industrial & production facilities: Safeguarding small motors, pumps, ventilation systems, and control circuits in production halls.
- Research institutions & laboratories: Protection of sensitive measuring and testing equipment in three-phase supply environments.
- Vehicle conversion & van builds: Safe 3-phase onboard power systems in motorhomes, vans, and special vehicles for workshop or kitchen setups.
Using these breakers helps minimize downtime, ensures compliance with DIN VDE 0100 standards, and provides long-term operational safety for your electrical installations.
Tripping Characteristics B and C – At a Glance
Choosing the right tripping characteristic is essential for the correct application:
| Tripping Characteristic | Tripping Range | Typical Applications | Recommended For |
|---|---|---|---|
| B-Characteristic | 3–5 × rated current | Resistive loads, incandescent lamps, heating systems | Residential & office buildings, lighting circuits |
| C-Characteristic | 5–10 × rated current | Inductive loads, motors, transformers | Industrial settings, workshops, pumps, compressors |
Technical Specifications
| Feature | Value / Description |
|---|---|
| Number of Poles | 3-pole (3P) |
| Breaking Capacity | 6 kA (Icn according to IEC 60898) |
| Rated Voltage | 400 V AC (three-phase) |
| Available Rated Currents | 10 A to 63 A (depending on model) |
| Module Width | 3 modules (54 mm) |
| Protection Class | IP20 |
| Mounting | 35 mm DIN rail |
| Standards | DIN EN 60898-1, VDE 0641-11 |
Frequently Asked Questions (FAQ) about 3-Pole 6kA Circuit Breakers
What is the difference between a 3-pole and a 1-pole circuit breaker?
A 3-pole miniature circuit breaker interrupts all three phases of a three-phase circuit simultaneously. This prevents unbalanced voltages and ensures higher safety for three-phase loads, unlike 1-pole breakers which only protect a single phase.
When should I choose a 6kA instead of a 10kA circuit breaker?
The 6kA model is sufficient for most standard installations in commercial, office, workshop, and residential buildings where the expected short-circuit current is below 6,000 A. For systems with higher short-circuit levels (e.g., close to transformers), 10kA versions are recommended.
Which tripping characteristic is suitable for motors?
For motors, transformers, and other inductive loads, the C-characteristic is ideal because it tolerates higher inrush currents and prevents nuisance tripping. The B-characteristic is better suited for purely resistive loads such as heaters or LED lighting.
Are 3-pole 6kA circuit breakers suitable for construction sites?
Yes, they meet the requirements for temporary construction power distribution and provide reliable protection against overload from power tools and machinery. Make sure to select the correct rated current based on the connected load.
How are 3-pole MCBs installed?
The breakers simply snap onto a 35 mm DIN rail inside the distribution board. Connections are made at the top (incoming) and bottom (outgoing) using screw terminals. The clear ON/OFF position indicator makes operation easy.
Can these circuit breakers be used in van conversions and vehicle builds?
Absolutely. In campervans and special vehicle conversions, 3-pole 6kA breakers provide safe three-phase onboard power systems – for example, for kitchen units, workshop equipment, or charging infrastructure. They are compact and vibration-resistant.
What advantages do 3-pole circuit breakers offer for research facilities?
In laboratories and test benches, they protect sensitive three-phase equipment from current spikes and short circuits. Precise tripping ensures maximum operational reliability and minimizes disruptions during test series.
Do these 3-pole 6kA circuit breakers meet current standards?
Yes. They fully comply with DIN EN 60898-1 and VDE 0641-11 and are approved for use in all electrical installations according to DIN VDE 0100.
With these 3-pole 6kA circuit breakers, you get a future-proof, standards-compliant solution for all professional electrical installations. Our technical advisors are happy to help you select the right variant (B or C characteristic and desired rated current).