MBS KBU 58 800/5 A split-core current transformer, Class 0.5
A 800 A : 5 A split-core current transformer in accuracy Class 0.5, made in Germany by MBS.
- Divisible (split) core clamps over an existing live conductor or busbar — no need to disconnect the circuit to fit it.
- Class 0.5 accuracy on every ratio (400/5, 500/5, 600/5, 750/5, 800/5, 1000/5 A), all with a standard 5 A secondary for meter/relay wiring.
- Made in Germany, rated -5 to +40 °C operating.
- Rated burden runs 1 VA on the 400/5 A unit up to 5 VA on the 1000/5 A unit — check the datasheet download for the exact figure on your ratio.
- 0,5 class
- Accuracy class
- Manufacturer
- MBS
- Model code
- KBU 58 Kl.0,5 800/5
- Item no.
- DLK-MBS-KBU58-800-5A
- Delivery
- Delivery to Germany · EUR 14.90 at checkout
Plan with KBU 58 Kl.0,5 800/5
New system, extension or replacement? Linker Advisor starts from this article and asks only for what is still open — existing model, quantity, postcode, installation date.
Figures transcribed from the manufacturer datasheet on file. Confirm your grid code and configuration with our engineers before ordering.
- GoodWe · SAJ · Pylontech · EcoFlow · Chint paired from the maker’s own lists
- Datasheets on file for every item
- Within 24 h engineering response
- MOQ 1 unit · EU delivery
- Engineering-checked configurations
Zero export starts with numbers that hold up.
Bidirectional metering at the grid connection point feeds the inverter the import and export truth it needs.
The core divides — you do not break the busbar
MBS: 'Teilbare Stromwandler können nachträglich ohne Unterbrechung des Primärkreises über bestehende Leiter oder Stromschienen geklemmt werden.' A closed ring transformer has to be threaded, which means taking the service down and unbolting the bar.
Inspect it before you spec it.
Official renders, installation photos and system panels for this model line.
Manufacturer render, core shown open.
The divisible core is what lets the transformer go onto a live bar.
Specifications
Every value exactly as published in the official KBU 58 Kl.0,5 800/5 documentation.
Documents
Complete the system
Balance-of-system and accessories paired with this model. Every pairing follows the manufacturer's official compatibility list.
Chint DTSU666-CT smart meter
- [1]Chint DTSU666-CT smart meter
GoodWe GM330 smart meter
- [1]GoodWe GM330 smart meter
GoodWe SEC1000S Smart Energy Controller
- [1]GoodWe SEC1000S Smart Energy Controller
Pick the rating
MBS KBU 58 family. Same engineering, different size.
Every figure comes straight from the manufacturer's official datasheet.
General 4
Because you cannot fit one to a service that is already running.
- A closed ring has to be threaded onto the conductor, so the bar must be unbolted and the supply taken down
- On a retrofit that is the difference between a job you can take and a job you cannot
GoodWe requires a sampling error ≤1% and recommends class 0.5, 0.5S, 0.2 or 0.2S; Class 1 is exactly at the limit and outside the recommendation.
- Be careful what the channel sells you: the KDK 200/5 A split-core that is widely advertised as "Klasse 1, suitable for the GM330" is Klasse 3 in KDK's own catalogue, ±3%
One per phase: L1, L2 and L3 — three for a three-phase service. Do not fit one on N.
400 A, on a busbar.
- Below that, no true Class 0.5 split-core busbar transformer exists in the German channel
- The sub-400 A Class 0.5 split-cores are cable types with an 18 mm aperture, useless on a bar
- If your service is under 400 A, spec the CT up to 400/5 A rather than dropping to Class 1
Send the project. Hear from an engineer within 24 hours.
Loads, tariff, site constraints - our engineers reply with a compatibility check and a sizing recommendation.
Contact project supportOr write to linker01@de-linker.com — attach your load profile if you have one.