Delfin DG 300 HD ACD
ACD industrial vacuum cleaner for combustible dust in non ATEX-classified areas
The Delfin DG 300 HD ACD is a powerful three-phase industrial vacuum cleaner designed for the safe collection of combustible or hazardous dust in ordinary (non-ATEX-classified) areas. The model is tested according to IEC 60335-2-69 Annex AA (ACD – Applied for Combustible Dust) and equipped with a full H14 HEPA filtration system and an automatic filter cleaning system certified according to ATEX standards. With a large 220 L container and a high airflow of 2,050 m³/h, it is ideal for process plants, central vacuum systems, and heavy-duty industrial applications.
- ACD classification according to IEC 60335-2-69 Annex AA – for combustible dust handling outside ATEX zones.
- Motor: three-phase 400 V – 25 kW – 78 dB(A) – with PTC motor temperature monitoring.
- Filter: antistatic polyester class M with automatic cleaning and H14 HEPA final filter.
- Container: 220 L – painted steel as standard, optional AISI 304 stainless steel.
- Filter surface: 120,000 cm² (primary) + 103,500 cm² (HEPA H14 99.995%).
Technical construction
The DG 300 HD ACD is equipped with a side channel blower for continuous operation (24/7) with a vacuum up to 3,100 mm H₂O. The large filter chamber features automatic filter cleaning (AUT) that maintains constant suction performance during extended use. The heavy-duty steel frame includes forklift pockets and large wheels for easy handling. The unit can be configured as a central vacuum system or used as a standalone solution for multiple operators.
Safety and filtration
- Antistatic polyester M-class primary filter and H14 HEPA final filter according to EN 1822-5.
- ATEX-certified filter cleaning system (although the vacuum as a whole is ACD-classified).
- Electrical protection IP65 – suitable for heavy industrial environments.
- PTC thermal sensor for motor protection and overheating control.
Technical note
ACD-classified vacuum cleaners like the DG 300 HD ACD are used where dust is combustible, but the surrounding environment is not classified as an ATEX zone. It complies with the IEC 60335-2-69 Annex AA standard for containment, filtration, and safe handling of combustible dust. Suitable for pharmaceutical, chemical, and metal processing industries where high suction performance is required without ATEX certification. The stainless-steel version (AISI 304) is recommended in hygienic or corrosion-sensitive environments.
Unsure about ACD vs. ATEX?
Read how IEC 60335-2-69 (Annex AA) differs from ATEX, and when ACD-certified vacuums can safely be used for combustible dust.
FAQ
What does ACD mean?
ACD stands for “Applied for Combustible Dust” according to IEC 60335-2-69 Annex AA – meaning the vacuum is tested for safe handling of combustible dust in ordinary areas.
Is the DG 300 HD ACD ATEX certified?
No, it is ACD-classified and intended for non-zoned environments. Only the filter cleaning system is ATEX-certified.
Can it be used as a central vacuum system?
Yes – with its 25 kW side channel blower and 2,050 m³/h airflow, it supports simultaneous operation by multiple users through a piping network.
What filter class does it have?
H14 HEPA filter with 99.995% efficiency (EN 1822-5, MPPS method).
Is a stainless-steel version available?
Yes, both the container and filter chamber can be supplied in AISI 304 stainless steel.
Related links
Technical specifications
| Specifications | Data |
|---|---|
| ACD classification | IEC 60335-2-69 Annex AA – Applied for Combustible Dust |
| Voltage / Frequency | 400 V – 50 Hz (3~) |
| Power / Current | 25 kW / 46 A |
| Electrical protection | IP 65 |
| Max vacuum | 3,100 mm H₂O |
| Max airflow | 2,050 m³/h |
| Inlet diameter | Ø 120 mm |
| Container capacity | 220 L – steel / optional AISI 304 stainless steel |
| Primary filter | Dry Star bag – antistatic polyester M-class |
| Filter surface (primary) | 120,000 cm² / Ø 780 mm |
| Cleaning system | Automatic (AUT) – ATEX certified |
| HEPA filter | H14 – 103,500 cm² – 99.995% (MPPS) |
| Noise level | 78 dB(A) |
| Dimensions (L×W×H) | 95 × 180 × 220 cm |
| Weight | 810 kg |
| Accessories | Conductive hoses and tools (optional) |
