How DK380C4.0-H8 Model Size: What the Specs Actually Tell You

The DK380C4.0-H8 model size is one of those technical topics where the numbers floating around online can be wildly inconsistent — and that’s a real problem if you’re planning an installation. One page suggests a compact footprint of 380×450×520mm, while another claims something closer to 2.4m × 1.8m × 2.1m. Those figures don’t just differ slightly — they represent completely different equipment categories. They simply cannot both be correct.

If you’re laying out a production floor or preparing a retrofit installation, relying on unverified dimensions can create costly mistakes. I’ve personally seen facilities delay commissioning by weeks just because clearance assumptions were wrong. In some cases, the equipment physically fit — but technicians couldn’t access service panels safely. That’s an avoidable scenario.

This article takes a practical, engineering-first approach. We’ll decode what the DK380C4.0-H8 model number actually tells you about size, clarify the difference between footprint and installation envelope, and walk through a reliable method to verify specifications before making layout decisions. The goal isn’t just understanding — it’s helping you avoid expensive installation surprises.

Key Takeaways

• The model number is essentially a compressed specification string — “DK380,” “C4.0,” and “H8” each hint at frame class, configuration, and precision grade
  • Footprint is not the same as installation envelope — operational space requirements are always larger
  • The “H8” designation indicates tolerance/precision grade — this affects mounting surface requirements
  • Conflicting dimension data online should be treated as a warning sign — not a usable range
  • Five clearance zones matter more than raw dimensions: front, rear, both sides, overhead, and underfloor
  • If verified documentation is missing, there is a structured way to request accurate specifications

What the DK380C4.0-H8 Model Number Actually Tells You About Size

Before tracking down an official datasheet, the model number itself already contains useful clues. Industrial manufacturers rarely assign random naming conventions. Instead, each section of the model string usually reflects structured technical information. Learning to interpret these strings can save time — and in real-world projects, that time matters.

Breaking Down the Model String: DK / 380 / C4.0 / H8

Let’s analyze the components individually.

DK — This typically identifies the product family or series. Many automation and control equipment manufacturers use two-letter prefixes to group related models. Without the OEM documentation, you can’t resolve this fully, but it confirms the unit belongs to a defined product line rather than a custom one-off.

380 — A three-digit number in this position usually refers to either frame class or voltage category. In many industrial naming conventions, “380” often correlates with 380V three-phase supply environments or a specific frame size band. Either interpretation matters for size estimation. A 380V-class unit generally requires larger terminals, heavier enclosure construction, and corresponding mounting considerations.

C4.0 — This segment typically denotes configuration version, capacity tier, or power rating. It could represent a 4.0 kW rating, a fourth-generation hardware revision, or a feature-level grouping. In automation controllers, this often aligns with hardware generation updates.

H8 — This is the most technically meaningful component. “H8” corresponds to ISO 286-1 tolerance grade. This standard defines dimensional tolerance ranges used in engineering fits. In practical terms, this implies tighter internal tolerances and more precise mounting expectations.

Taken together, the DK380C4.0-H8 model size likely corresponds to a mid-range industrial controller — not small enough to be bench-mounted, but not large enough to be a full-scale machine enclosure. That’s an important early conclusion for planning.

The Difference Between Footprint and Installation Envelope

This is where many installation errors begin. A footprint only tells you how much floor space the unit occupies physically. The installation envelope defines how much space the equipment actually requires to operate safely.

Raw Dimensions vs. Operational Clearances

Length, width, and height only describe the box. They don’t account for wiring, airflow, service access, or safety compliance. These additional requirements expand the usable space dramatically.

For equipment in the DK380C4.0-H8 class, five clearance zones usually determine the installation envelope:

1. Front access clearance — Required for panel access, wiring, and operator interface. Typically 800mm to 1,200mm.
2. Rear service clearance — Needed for cable routing and airflow. Usually 300–500mm minimum.
3. Side clearances — Necessary for cooling airflow. Often 150–200mm per side.
4. Overhead clearance — Required for top cable entry or exhaust vents.
5. Underfloor / mounting surface space — For grounding, vibration pads, and conduit routing.

Here’s a practical example. A controller with a raw footprint of 400mm × 500mm may require an operational envelope of roughly 1,400mm × 1,200mm once all clearances are included. That’s a massive difference.

In real installations, this is where planning often fails. I’ve seen installations where the equipment fit perfectly between two machines — but technicians couldn’t open the front panel fully. The result? Equipment relocation.

Why the H8 Grade Changes Your Mounting Requirements?

The “H8” precision designation is not just internal engineering detail. It directly affects installation quality requirements.

ISO 286 H8 tolerance implies tighter dimensional allowances. Equipment built to this tolerance expects properly prepared mounting surfaces.

Practical implications include:

• Concrete pads must meet flatness specifications (typically within 2–3mm over 1m)
  • Bolt alignment must be accurate — forced alignment introduces stress
  • Vibration isolation may be required near heavy machinery
  • Level mounting is essential for performance

In environments with heavy compressors or stamping equipment, ignoring these requirements often results in premature wear. In my experience, vibration is the most commonly overlooked factor — especially in retrofit projects.

What Verified Size Data Looks Like — and How to Find It

The Problem With the Information on This Topic (Stated Plainly)

Search results for DK380C4.0-H8 model size often contain conflicting information:

• 380 × 450 × 520mm
  • 2.4m × 1.8m × 2.1m
  • Weight around 75kg
  • No weight listed

These numbers don’t represent variations — they represent entirely different equipment classes. The most likely explanation is unverified AI-generated content using guessed values.

This creates real risks:

• Incorrect floor layout planning
  • Procurement errors
  • Non-compliant installations
  • Cooling and airflow miscalculations

Recognizing Trustworthy Industrial Spec Data

How to Request Verified Specs When You Don’t Have a Datasheet?

Step 1: Identify manufacturer using prefix clues
Step 2: Contact certified distributor
Step 3: Request specific documents
Step 4: Verify revision number

Ask specifically for:

• Dimensional drawing
  • Installation clearance requirements
  • Weight and center-of-gravity data
  • Compliance certificates

Relevant standards include:

• ISO 286-1
  • IEC 60947
  • IEC 61439
  • NEMA 250

How to Evaluate Any Industrial Controller’s Size for Your Facility

The Five-Question Pre-Installation Size Checklist

Q1: Confirm floor footprint
Use OEM dimensional drawings.

Q2: Check minimum clearances
Front, rear, sides, top, bottom.

Q3: Verify mounting surface
Flatness and load capacity matter.

Q4: Confirm overhead access
Measure ceiling height properly.

Q5: Evaluate vibration requirements
Isolation pads may be necessary.

Size vs. Performance Trade-offs at This Class of Unit

The DK380C4.0-H8 model size likely falls between compact and mid-frame, making it suitable for retrofits but requiring careful serviceability planning.

Installation Planning Scenarios

Scenario A: Retrofitting into an Existing Line

Common checks:

• Verify actual gap dimensions
  • Confirm front clearance access
  • Check overhead clearance

Often missed:

• Grounding conductor routing
  • Thermal airflow limitations

Scenario B: New Build / Greenfield Installation

Common mistakes include over-allocating space in non-critical directions and under-allocating in service zones.

Frame class hints help with:

• Conduit sizing
  • Cable entry planning
  • Terminal block capacity

Who Should — and Shouldn’t — Use This Model

Good fit:

• Moderate space constraint installations
  • Precision motion control applications
  • 380V three-phase facilities

Not ideal for:

• Portable setups
  • High-vibration environments without isolation
  • Flexible form-factor requirements

In real-world facility planning, the DK380C4.0-H8 model size makes sense when you need balanced performance without committing to a full-frame controller. But careful installation planning remains critical.

Conclusion

Understanding the DK380C4.0-H8 model size goes far beyond reading raw dimensions — it requires decoding the model number, recognizing the difference between footprint and installation envelope, accounting for H8 tolerance mounting requirements, and verifying specifications from reliable sources. The biggest takeaway is simple but important: never plan installation based on conflicting online numbers. Always confirm clearances, mounting conditions, and operational access before procurement. From what I’ve seen in real industrial environments, most installation issues aren’t caused by equipment defects — they’re caused by incomplete size planning. Treat the model string as your starting point, verify with OEM documentation, and design around the full operational envelope. That approach prevents costly mistakes and ensures the DK380C4.0-H8 performs exactly as intended.