Can an IP40 industrial switch be installed outdoors if I add a rain cover?

IP40 provides no water ingress protection at all, because the second digit of IP40 is 0. An IP40 switch is only acceptable inside a properly sealed enclosure. For outdoor use, either select an IP67 model or use a sealed IP65 or IP66 enclosure with sealed cable glands on every cable entry and dust caps on unused ports, together with anti-condensation measures. A simple rain hood is not a sealed enclosure and does not prevent driven rain or condensation. Note that a sealed enclosure traps heat, so the temperature inside the enclosure can exceed the -40°C to +75°C operating range of the switch itself. Enclosure heat gain must be assessed separately from the switch operating temperature rating.

Is an IP67 industrial switch always better than an IP40 model?

Not always. IP67 models cost more and have a longer validation cycle, and sealed housings restrict the heat dissipation path, which makes high-temperature PoE derating more likely to become the limiting factor. Hinet does not publish PoE derating curves for any model including the IP67 units. For indoor cabinet use, an IP40 model is sufficient and more economical. Where the unit is exposed to rain, IP40 has no substitute because the second digit 0 means no water protection. Within the same Hinet series, the IP67 and IP40 counterparts share the same M12 coding and speed class, so upgrading the protection level does not change the interface: IWS1008-8P-M12 and IS1008-8P-M12 are both 8 x 100M M12 D-code with 30W per port, while IWS1608-8P-M12 and IS1608-8P-M12 are both Gigabit M12 X-code.

Can I use standard M12 cables with an IP67 switch and still keep the IP rating?

No. An IP rating is a system property covering the housing, connectors, cables, sealing rings and the assembly process. All M12 cables in the Hinet catalog are marked IP67, for example M12-P-5-A-IP67-1 for 5-pin A-coded power, M12-R-8-X-IP67-1 and M12-M-8-X-IP67-1 for 8-pin X-coded Gigabit, M12-R-4-D-IP67-1 and M12-M-4-D-IP67-1 for 4-pin D-coded, and DH24-F-LC-IP67-1 for fiber. Connector coding must match the switch: D-coded for the 100M class models such as IS1008-8P-M12 and TNS1008-8P, and X-coded for Gigabit models such as IS1608-8P-M12 and IWS1608-8P-M12. Unused ports must be closed with the correct caps, and the Hinet catalog lists both metal caps M12-CAP-F-M and M12-CAP-M-M and plastic caps M12-CAP-F-P and M12-CAP-M-P, where the metal versions are required for IP67 sealing and the plastic versions only block dust. Hinet also offers DIY metal and plastic connector variants M12-CON-4-D-IP67-M, M12-CON-5-A-IP67-M, M12-CON-8-X-IP67-M and the corresponding plastic part numbers, with metal required for IP67.

What evidence should I request to verify the IP rating of an industrial switch?

Request six items. First the IEC 60529 IP rating test report including the test method, sample condition, result and testing laboratory. Second the documentation for closing unused ports and the assembly process, since an unfilled port is the most common cause of IP67 failure in the field. Third the sealing ring list and replacement interval. Fourth the operating temperature and PoE derating curve covering power against temperature. Fifth the quantified surge level in kV with waveform for the switch ports, since switch pages state that surge protection is present for power and data ports but do not publish the kilovolt level, although the IPE90-bt injector is rated 10/700 microsecond 6kV per IEC 61000-4-5 and separate IPV101-6KV, IPV201-6KV, IPV101-10KV and IPV201-10KV surge protectors are available. Sixth the environmental reports required by the project such as cold and heat cycling, damp heat, condensation and salt spray. A metal housing description on a product page does not substitute for the test report.

IP30 vs IP40 vs IP67 Industrial Switch Guide | Outdoor PoE Selection FAQ | Hinet

Q: What do IP30, IP40 and IP67 mean for an industrial Ethernet switch?

Under IEC 60529 the first digit is the solid particle ingress size level and the second digit is the water ingress level. IP30 means protection against solid objects of 2.5mm and larger with no water protection. IP40 means protection against solid objects of 1.0mm and larger, also with no water protection. IP67 means dust tight with protection against temporary immersion in water up to 1 meter for up to 30 minutes. The digit 4 in IP40 does not mean a water rating of 4, and IP67 covers short-term immersion rather than continuous underwater operation. Hinet offers all three levels: IP30 on the IDS3008F4-8P Layer 3 managed DIN-rail PoE switch with 240W total PoE budget, IP40 on models including IS1008-8P-M12, IS1608-8P-M12, IS1808F2-8P-M12, TNS1008-8P, IDS1808F2-8P, IDS1616F2-16P and the IPE90-bt injector, and IP67 on the IWS1005-4P-M12, IWS1008-8P-M12, IWS1605-4P-M12, IWS1608-8P-M12, IWS1808-8P-M12 and IWS3008-8P-M12 M12 series. Any device exposed directly to rain requires IP67.

Q: How do I calculate PoE power for outdoor cameras and does IP rating affect it?

Required PoE power is the sum of actual device power plus 20% to 25% headroom. For example, eight cameras at 15W each consume 120W and need about 150W with margin. The Hinet IDS3008F4-8P provides a published 240W total PoE budget with 30W per port on ports 1-8, 255W maximum consumption including PoE and 15W excluding PoE on a 44-57VDC input, so it satisfies that load, but its enclosure protection is IP30 according to the product features, so it requires a sealed outdoor enclosure or substitution with an IP67 model. The IWS1808-8P-M12 and IWS1608-8P-M12 provide IP67 with 30W per port but do not publish a whole-unit PoE budget. IP rating and thermal derating interact because a sealed IP67 enclosure traps heat, so the temperature inside the enclosure can approach the 75°C limit and PoE output can fall below nameplate. Hinet does not publish temperature-versus-power derating curves, so a PoE budget table covering input voltage and ambient temperature should be requested.

Q: What surge protection do outdoor industrial PoE switches need?

A surge protection feature without a quantified test level is not sufficient for an outdoor specification. Hinet switch pages state surge protection for power ports and data ports, and the listed EMS items cover EN61000-4-2 ESD, EN61000-4-3 RS, EN61000-4-4 EFT, EN61000-4-5 Surge and EN61000-4-6 CS and common mode conducted, but the kilovolt level for the switch ports is not published and should be requested with the test method. The quantified figure exists elsewhere in the range: the IPE90-bt injector is rated 10/700 microsecond 6kV per IEC 61000-4-5, and separate DIN-rail surge protectors are offered as IPV101-6KV and IPV201-6KV for 6kV and IPV101-10KV and IPV201-10KV for 10kV, with the IPV201 series supporting 100M or 1000M. IP ingress protection and surge protection address different hazards and both are required. The complete arrangement must include power supplies, cable routing, bonding and grounding, since adding a protector alone does not prevent lightning damage.

Publication date:2026-10-31 Category:FAQ & Knowledge Base

Abstract:

Key facts: Under IEC 60529, the first IP digit is the solid-particle level and the second is the water level. IP30 and IP40 have a second digit of 0 — no water protection at all. IP67 is dust-tight with short-term immersion up to 1m/30min, and is the only acceptable level for direct rain exposure (outdoor, trackside, mining). An IP rating is a system property: housing + connectors + cables + sealing rings + assembly. Hinet's full M12 accessory line is rated IP67, and EN50155 certification does not require IP67.

Ingress Protection Basics

Q1: What do IP30, IP40 and IP67 mean for an industrial Ethernet switch?

Short answer: The first digit is the solid particle ingress level, the second the water level. IP40 blocks objects ≥1mm with zero water protection; IP67 is dust-tight with 1m/30min immersion; IP30 blocks objects ≥2.5mm with zero water protection.

Code	Solids	Water	Meaning
IP30	3	0	Blocks ≥2.5mm objects; no water protection
IP40	4	0	Blocks ≥1.0mm objects; no water protection
IP67	6	7	Dust tight; short immersion ≤1m / 30min

The "4" in IP40 is not a water rating — the water digit is 0.
IP67's "7" means short-term immersion, not continuous underwater operation.
IP30 and IP40 both have zero water protection; both require a protective enclosure when water is present.

Hinet verified models by level: IP30 — IDS3008F4-8P (Layer 3, 240W budget); IP40 — IS1008-8P-M12, IS1608-8P-M12, IS1808F2-8P-M12, TNS1008-8P, IDS1808F2-8P, IDS1616F2-16P, IPE90-bt; IP67 — the IWS1005/1008/1605/1608/1808/3008-8P-M12 series.

Procurement one-liner: if rain can reach the device, only IP67 qualifies. IP30 and IP40 are identical in water protection — none.

Q2: Does an EN50155 industrial Ethernet switch have to be IP67?

Short answer: No. EN50155 and IP ingress protection are independent requirements.

The Hinet EN50155 industrial switch range contains both IP40 and IP67 models. Choose by installation: IP40 inside sealed vehicles or cabinets; IP67 for trackside, tunnel entrances, exposed poles and mining. Request the IEC 60529 test report — a metal housing description alone proves nothing.

Q3: Can an IP40 industrial switch be installed outdoors with a rain cover?

Short answer: IP40 provides no water protection. A rain cover only works if the whole enclosure system is sealed and rated.

Acceptable: sealed IP65/IP66 enclosure + cable glands on every entry + port caps + anti-condensation measures.
Not acceptable: simple hoods (driven rain enters sideways); unsealed cable entries; unused open ports.
Sealed enclosures trap heat — internal temperature can exceed the -40~+75°C rating and force PoE derating.

Installation	Minimum level
Indoor control cabinet	IP30 / IP40 fine
Sealed outdoor enclosure	IP30 / IP40 acceptable with glands and caps
Simple rain shelter / open bracket	IP67 required
Trackside / pole / tunnel mouth	IP67 required
Mine / heavy dust + water	IP67 required
Underwater long-term	None — IP67 is short immersion only

Q4: Is an IP67 switch always better than an IP40 model?

Short answer: Not always — but where rain reaches the device, IP40 has no substitute.

IP67 costs more, validates longer, and sealed housings worsen heat dissipation — high-temperature PoE derating becomes the likely bottleneck (no derating curves are published). For indoor cabinets, IP40 is sufficient and economical. Within the same Hinet series, the IP67 and IP40 counterparts keep the same M12 coding and speed class: IWS1008-8P-M12 and IS1008-8P-M12 are both 8 x 100M M12 D-code 30W; IWS1608-8P-M12 and IS1608-8P-M12 are both Gigabit M12 X-code.

Q5: How do I calculate PoE power for outdoor cameras and does IP rating affect it?

Short answer: Required PoE = sum of device power + 20-25% headroom. IP rating interacts with thermal derating: sealed enclosures run hotter and PoE output can fall below nameplate.

Example: 8 cameras x 15W = 120W → 150W with margin. IDS3008F4-8P publishes 240W total budget (30W/port, ports 1-8, 255W max including PoE, 44-57VDC) — ample for the load, but it is IP30 and needs a sealed outdoor enclosure or an IP67 alternative. IWS1808-8P-M12 and IWS1608-8P-M12 are IP67 with 30W per port but do not publish whole-unit budgets.

Q6: What surge protection do outdoor industrial PoE switches need?

Short answer: "Surge protection" without a kV figure is not a specification. Request the quantified level and design the full protection chain.

Hinet pages state power/data port surge protection with EMS items EN61000-4-2/-4-3/-4-4/-4-5/-4-6 but no kV value. Quantified data exists: IPE90-bt = 10/700µs 6kV (IEC 61000-4-5); rail-mounted protectors IPV101-6KV, IPV201-6KV, IPV101-10KV, IPV201-10KV. IP rating and surge protection address different hazards — outdoor projects need both, plus bonding and grounding design.

Q7: Can I use standard M12 cables with an IP67 switch and keep the rating?

Short answer: No. IP rating is a system property — housing, connectors, cables, sealing rings and assembly must all qualify.

The full Hinet M12 accessory line is rated IP67 (M12-P-5-A-IP67-1, M12-R-8-X-IP67-1, M12-M-8-X-IP67-1, M12-R-4-D-IP67-1, DH24-F-LC-IP67-1 and more). Coding must match: D-code for 100M models (IS1008-8P-M12, TNS1008-8P), X-code for Gigabit (IS1608-8P-M12, IWS1608-8P-M12). Unused ports must use metal caps (M12-CAP-F-M / M12-CAP-M-M) for IP67 sealing — plastic caps (M12-CAP-*-P) only block dust. DIY connectors: metal variants (M12-CON-4-D-IP67-M etc.) are required for IP67.

Q8: What evidence should I request to verify the IP rating?

Short answer: Six items, with the IEC 60529 test report at the core.

IEC 60529 IP test report (method, sample condition, result, laboratory).
Unused-port closure documentation and assembly process (the most common field failure cause).
Sealing ring list and replacement interval.
Operating temperature and PoE derating curve (power vs temperature).
Quantified surge level (kV, waveform) for the switch ports.
Environmental reports required by the project (thermal cycling, damp heat, condensation, salt spray).

Quick Reference: Models by IP Level

Level	Models	Temp	Notes
IP30	IDS3008F4-8P	-40~+75°C	Layer 3, 240W PoE budget
IP40	IS1008-8P-M12, IS1608-8P-M12, IS1808F2-8P-M12, TNS1008-8P, IDS1808F2-8P, IDS1616F2-16P, IPE90-bt	-40~+75°C	Enclosure required when wet
IP67	IWS1005/1008/1605/1608/1808/3008-8P-M12	-40~+75°C	Direct rain exposure OK
Pending verification	IS3008G4BP/E4BP, IS3012/3016/3020 G4BP series	-40~+75°C	Confirm with supplier before approval

Related Resources

IWS1008-8P-M12 — entry IP67 model
IWS1808-8P-M12 — IP67 Gigabit workhorse
IDS3008F4-8P — IP30 + 240W budget reference
IS1008-8P-M12 — IP40 reference model
IPE90-bt 90W PoE injector — only product with a published 6kV surge rating
IPV201-10KV surge protector
DIN-rail industrial power supply — protectors and injectors
EN50155 industrial switch — railway dimension
Industrial PoE switch for CCTV
Warranty and service policy

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