{"id":64213,"date":"2026-01-21T11:03:34","date_gmt":"2026-01-21T11:03:34","guid":{"rendered":"https:\/\/www.euro2000-spa.it\/?p=64213"},"modified":"2026-01-21T13:01:50","modified_gmt":"2026-01-21T13:01:50","slug":"ik-classification-impact-protection","status":"publish","type":"post","link":"https:\/\/www.euro2000-spa.it\/en\/ik-classification-impact-protection\/","title":{"rendered":"IK Protection Rating: Classification and Impact-Resistant Conduits"},"content":{"rendered":"\n

Modern industrial and commercial electrical installations are constantly exposed to mechanical stresses, whether it is an accidental drop of tools on components or intentional damage in public areas. To ensure the safety of people and the reliability of electrical equipment, the precise selection of IK ratings (which is recognized as the international standard IEC 62262) for impact resistance is vital. This article explains the principles behind IK ratings, their significance, and how choosing Euro 2000 conduits ensures dependable impact protection for your installations with some of our applications.<\/p>\n\n\n\n

Understanding IK Ratings protection<\/h2>\n\n\n\n

The IEC 62262 (EN 62262) standard assigns an IK code from IK00 (no protection) to IK11 (50 J) that quantifies the energy an enclosure can withstand without functional failure. Each step represents a defined strike, e.g., IK08 equals a 1.7 kg steel hammer dropped 300 mm (5 J).<\/p>\n\n\n\n

IK Code<\/strong><\/td>Impact Energy (J)<\/strong><\/td>Typical Test Mass & Drop Height<\/strong><\/td><\/tr>
IK06<\/strong><\/td>1 J<\/td>0.25 kg \u00d7 400 mm<\/td><\/tr>
IK08<\/strong><\/td>5 J<\/td>1.7 kg \u00d7 300 mm<\/td><\/tr>
IK10<\/strong><\/td>20 J<\/td>5 kg \u00d7 400 mm<\/td><\/tr>
IK11<\/strong><\/td>50 J<\/td>10 kg \u00d7 500 mm (added 2021)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

To obtain an IP certification, performing IK testing is a mandatory step. While IP ratings focus on protection against dust and water ingress, the IK rating specifically measures resistance to mechanical impacts. In fact, IK testing is typically carried out before assigning the final IP rating, ensuring that both ingress protection and impact protection are properly validated.<\/p>\n\n\n

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\"Infographic\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button>
Figure 1: Infographic on IK Ratings<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n
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IK Performance Levels<\/h3>\n\n\n\n

IK08 Heavy-Duty Rating (5-7 J)<\/strong><\/p>\n\n\n\n

Equivalent to a 1.7 kg hammer dropped 300-400mm, this rating handles routine industrial impacts including dropped tools, maintenance contact, and equipment vibration.<\/p>\n\n\n\n

IK10 Maximum Standard Rating (20 J)<\/strong><\/p>\n\n\n\n

Withstands a 5 kg hammer dropped 400mm, suitable for exposed installations, public areas, and locations subject to deliberate abuse or severe mechanical stress.<\/p>\n\n\n\n

The coordinated IK ratings across conduits, fittings, and glands ensure complete pathway integrity even after significant impact events, maintaining both electrical continuity and environmental sealing.<\/p>\n<\/div>\n\n\n\n

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\"IK\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button>
Figure 2: IK Rating Scale<\/em>

<\/em><\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n\n\n

Impact-Resilient Euro 2000 Protection Systems<\/h2>\n\n\n\n

STANDARD SYSTEMS<\/strong><\/h3>\n\n\n\n

Standard systems provide essential mechanical protection for day-to-day industrial electrical installations. These assemblies feature impact resistance at the heavy-duty IK08 level (6 J), sufficient to withstand accidental tool drops, maintenance impacts, and routine industrial knocks. The TZR rigid steel tube elevates protection to the maximum IK10 level (20 J) for exposed runs requiring exceptional durability.<\/p>\n\n\n\n

Standard Conduit Systems (DMC + Fittings)<\/strong><\/p>\n\n\n\n

This flexible metal conduit system <\/a>combines galvanized steel DMC conduit<\/a> with precision nickel-plated brass fittings and cable glands \u2013 AM-MF<\/a> and AM RP-MF<\/a>, forming a complete solution certified to EN IEC 61386. It offers high durability with an IK08 impact rating (about 7J), IP66\/67\/68 protection, 1000 N tensile strength, and 1250 N compressive strength, all while maintaining electrical continuity throughout.<\/p>\n\n\n

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\"DMC\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button>
Figure 3: DMC Conduit with AM-MF and AM RP-MF Fittings<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n

Rigid Conduit Systems (TZR Tube + Fittings)<\/strong><\/p>\n\n\n\n

The TZR rigid steel tube<\/a>, made from Fe360 steel with hot-dip galvanization per EN 10240, offers a top impact rating of IK10 (20 J), withstanding a 5 kg hammer drop from 400 mm, and provides 4000 N compressive strength, 1000 N tensile strength, and excellent flame retardancy across a broad temperature range (\u201325\u00b0C to +400\u00b0C). When combined with the INR series quick-coupling fittings and cable glands, crafted from nickel-plated brass with IK08 impact resistance (6 J), the system ensures robust protection including IP66\/67\/68 ratings, tensile strengths around 1000 N, compressive strengths up to 1250 N, and maintains electrical continuity. These fittings feature quick-assembly designs that accelerate installation and operate reliably from \u201340\u00b0C to 105\u00b0C, delivering a durable, high-performance cable solution.<\/p>\n\n\n

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\"TZR\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button>
Figure 4: TZR Rigid Steel Tube with Quick Coupling Fittings<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n

ATEX\/IECEx SYSTEMS<\/strong><\/h3>\n\n\n\n

These explosion-proof systems are certified for use in hazardous zones where flammable gases or combustible dust may be present. All components maintain impact resistance at the IK08 level (6-7 J) while featuring anti-static materials and enhanced sealing for explosive atmospheres for zone 1, zone 2, zone21 and zone 22.<\/p>\n\n\n\n

Ex Conduit System (Ex-DMC\/Ex-DMCX\/Ex-DMCXX<\/a> + Cable Glands<\/a>)<\/strong><\/p>\n\n\n\n

The Ex-DMC anti-static conduit offers IK08 impact resistance (6 J) and is designed to prevent electrostatic charge buildup with surface resistivity under 10\u2079 \u03a9, meeting IEC\/EN 60079-0 Section 26.13 requirements for explosive environments. It operates between \u201340\u00b0C and +105\u00b0C, provides IP67 protection, and delivers 1000 N tensile and 1250 N compressive strength. Paired with the RPM-N\/RPF-N explosion-proof cable glands, rated IK08 (7 J at \u201340\u00b0C) and certified for ATEX Device II (2G, 3G, 2D) with “Ex eb,” “Ex nR,” and “Ex tb” protections. This combination ensures high impact resistance, reliable sealing (IP66\/67\/68), and safe operation from \u201335\u00b0C to +85\u00b0C in hazardous areas.<\/p>\n\n\n

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\"Ex-DMC\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button>
Figure 5: Ex-DMC Conduit with RPM-N Fittings<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n

Ex Tube System (TZR <\/a>+ Quick Coupling Fittings)<\/strong><\/p>\n\n\n\n

This explosion-proof rigid system combines TZR tubes, retaining IK10 impact resistance (20 J) at \u201325\u00b0C and flame-proof rigidity for Zone 1, with certified Ex quick-coupling fittings and cable glands. For corrosion environment choose the stainless steel AISI 304 tube TXR or the stainless steel AISI 316L tube TXR316L.<\/p>\n\n\n\n

These INR series fittings and cable glands (INR-TF, INR-TM, INR-TT, INR-TPM) provide IK08 impact resistance (7 J at \u201340\u00b0C), ATEX Group II (2G, 2D) certification with “Ex eb”\/”Ex tb” protection, IP66\/67\/68 sealing, and operate from \u201335\u00b0C to +85\u00b0C. They ensure reliable electrical continuity, corrosion resistance, and fast installation, delivering robust mechanical and environmental protection in hazardous areas.<\/p>\n\n\n

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\"TZR,\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button>
Figure 6: TZR\/TXR\/TXR 316L Rigid Tubes with Quick Coupling Fittings<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n

JUNCTION BOXES<\/strong><\/h3>\n\n\n\n

EU6 <\/a>and NYLOHM <\/a>Junction Boxes<\/strong><\/p>\n\n\n\n

The EU6 junction box achieves IK08 impact resistance (5 J @ 20\u00b0C) through die-cast aluminium construction. Operating from \u201320\u00b0C to +80\u00b0C with IP66\/67\/68 protection, it provides secure cable termination. Captive earth screws and anti-corrosion coating ensure reliable electrical performance across seven standard sizes. The NYLOHM junction box achieves IK07 impact resistance (2 J) through Polyamide (PA66) construction. Operating from \u201350\u00b0C to +120\u00b0C, it has anti-vibration properties and non-openable accidentally and ensures an IP68 protection.<\/p>\n\n\n

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\"EU6\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button>
Figure 7: EU6 Metal and NYLOHM Junction Boxes<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n

CABLE GLANDS<\/strong><\/h3>\n\n\n\n