Chint DDSU666 (single-phase DIN-rail smart meter, direct to 80 A)
Chint DDSU666 is the single-phase DIN-rail smart meter behind single-phase export limitation: direct connection to 80 A, RS485.
- Direct connection to 80 A: the conductor runs through the meter, so no CT to size and no ratio to configure.
- RS485 out to the inverter or energy manager, which is what makes zero-export or a fixed feed-in cap enforceable rather than estimated.
- Small: 98 x 36 x 65 mm and 200 g on a mounting rack, under 1 W, IP54, -40 to +60 °C.
- Wide supply window — 220/230/240 V at 0.7 to 1.2 Un — so it keeps measuring on a weak or a stiff connection.
- RS485
- Communication
- Manufacturer
- SAJ
- Model code
- DDSU666
- Item no.
- DLK-CHINT-DDSU666
- Delivery
- Delivery to Germany · EUR 14.90 at checkout
Plan with DDSU666
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
DDSU666, specified from the datasheet.
Every value on this page is transcribed from the manufacturer documentation on file.
No current transformer
Direct connection to 80 A. Nothing to clamp, nothing to size, no ratio to set wrong at commissioning.
Inspect it before you spec it.
Official renders, installation photos and system panels for this model line.
Manufacturer imagery from the official Chint documentation.
Manufacturer imagery from the official Chint documentation.
Specifications
Every value exactly as published in the official DDSU666 documentation.
Documents
Pick the rating
Chint family. Same engineering, different size.
Every figure comes straight from the manufacturer's official datasheet.
Configuration 2
Phases, and with them the size.
- DDSU666 (this one): single-phase, one measuring element, 98 x 36 x 65 mm, 200 g.
- DTSU666: three-phase, 72 x 100 x 65 mm, 330 g.
- Both: direct connection to 80 A, RS485, backlit LCD.
If the house is on a single-phase connection, this is the one.
Not up to 80 A. This is a direct-connect meter — the live conductor passes through it.
- Advantage: nothing to size, nothing to clamp, no ratio to set, so one common source of commissioning error is removed.
- Limit: above 80 A you need a CT-based meter instead. Tell us the main fuse rating on the enquiry and we will say which one you want.
Installation & wiring 1
At the grid connection point, on a mounting rack in the board.
- Position: at the feed-in point, so it sees the whole house import and export rather than one circuit.
- Interface: RS485 to the inverter or energy manager.
- Supply: 220/230/240 V, 0.7 to 1.2 Un, under 1 W.
Availability & compliance 1
It is a Chint meter. SAJ resells it under its own documentation, which is the document we hold and link here — the same arrangement as the DTSU666 already on the site, which is also sold as a Chint part.
- Standards: CE and RoHS.
- Delivery: parcel at 200 g net, no dangerous-goods handling.
- Lead time: confirmed after order.
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.