An EMC cable gland and a standard cable gland are the same component in every respect except one: the EMC version has a conductive contact element that bonds the cable screen to the enclosure at the point of entry. Sealing, clamping, strain relief and thread dimensions are unchanged. So the choice is not “better or worse” — it is whether the cable entry is part of your screen-termination strategy or not.

That single difference drives a real price gap, and it is where most panel specifications either over-spend or leave a shielding path broken. Below is a specification-level comparison, the indicative FOB price difference, and a four-check test you can apply circuit by circuit.

What Actually Differs Between the Two Glands

Three things change when you move from a standard gland to an EMC gland, and nothing else does.

• A contact element is added. A spring-finger (crown) ring, a contact cone or a shield clamp presses the screen against the gland body around its full circumference.
• The body becomes part of the electrical path. The gland must conduct and must be bonded to the enclosure, so conductive metal construction is mandatory.
• The installation gains a step. The screen has to be exposed, folded or seated correctly, and the contact ring torqued — then verified with a continuity measurement.

Everything else is shared: thread standard, sealing inserts, IP rating, temperature range and locknut are identical between the two families at the same size. The one dimension that can shift is the maximum cable OD — because the contact ring occupies part of the bore, EMC glands top out lower in each series (up to 38 mm OD, against 44 mm for standard glands). If an EMC gland is specified and the screen is never bonded to the gland body during installation, you have paid the EMC price for a standard part. For a full explanation of the contact mechanism, see what an EMC cable gland is and how it works.

Where the Two Glands Are Identical

This is the part that keeps over-specification in check. Both types seal against water and dust to the same IP rating, both retain the cable against pull-out, both provide strain relief, both are available in the same metric, PG and NPT threads, and both are tested to the same standards — IEC 62444 for the gland itself and IEC 60529 for ingress protection.

A standard nickel-plated brass gland in IP68 is not a “weaker” product; it is the same sealed metal body without a screen contact. On an unshielded power feeder the EMC function has nothing to connect to, so the extra cost buys nothing.

Specification Comparison: EMC vs Standard Cable Gland

The Cost Difference, in Numbers

The price gap between the two families is real but narrower than most specifications assume — and it is far smaller than the cost of one unexplained drive fault. For reference, our indicative FOB pricing at 1,000 pcs per size:

Indicative FOB Ningbo / Shanghai, 1,000 pcs per size, standard export packing. Stainless steel and custom-thread versions are quoted separately.

Both specifications are built on the same metal bodies — the standard M20 brass gland and the 316 PG13.5 stainless gland use the same sealing design and thread dimensions that an EMC version carries with a 360° contact spring added. Upgrading does not change your panel drilling or thread standard.

On a cabinet with 40 drive and encoder entries, that difference is a few hundred dollars of hardware. Set it against the cost of one afternoon of field diagnosis on an intermittent encoder fault — or one scrapped batch from a drifting weighing signal — and the comparison stops being about unit price. The reverse also holds: on a distribution board with 200 unshielded lighting feeders, paying the EMC premium 200 times buys nothing at all.

When a Standard Cable Gland Is the Right Answer

• The cable is unshielded — utility power, lighting, general wiring.
• The enclosure is electrically quiet : no drives, inverters, servo amplifiers or switching supplies inside.
• The screen is already terminated on a dedicated EMC gland plate, shield clamp or grounding bar just inside the panel, at low impedance.
• The circuit is not covered by an EMC plan — mechanical and sealing performance are the only requirements.

Where the choice is between body materials rather than EMC function, the decision is environmental — corrosion, UV exposure and washdown duty — and both families are supplied in the same stainless steel cable glands and nickel-plated brass bodies.

When You Need the EMC Version

Four Checks That Decide It

1. Is the cable shielded? No screen means no EMC function. Stop here and buy standard.
2. Where is the screen supposed to terminate? At the gland, or on a clamp or plate inside the cabinet. If the answer is “at the gland”, specify EMC construction; if it is “inside”, a standard metal gland can be correct.
3. What else is in the enclosure? Drives, servo amplifiers, inverters and switching supplies make the entry point electrically significant. A quiet junction box does not.
4. Is the enclosure bonding path continuous? An EMC gland installed through a painted panel face is electrically isolated. Confirm locknut, earth tag or masked bonding surface before paying for the EMC spec.

Common Selection Mistakes

Conclusion

The two glands share a body, a thread and an IP rating. What separates them is whether the enclosure entry is used to terminate the cable screen. Once you know where the screen is bonded, the decision is mechanical: shielded cable entering a noise-heavy enclosure with the entry as the termination point gets the EMC version; unshielded cable, quiet enclosures and internally terminated screens get the standard version.

Most plants need both, and it is not a compromise to mix them — it is the correct specification. Decide per circuit, and check the bonding path before you approve the EMC premium. For thread and size confirmation across metric, PG and NPT, the thread types guide and the IP rating guide cover the rest of the specification.

Send us your cable list — shielded and unshielded, with outer diameters and thread sizes — and our engineering team will return a circuit-by-circuit gland schedule, a certificate pack and an FOB quotation within one working day. Contact us here.

FAQ

What is the main difference between an EMC and a standard cable gland?

The EMC version contains a conductive contact element that bonds the cable screen to the enclosure around its full circumference. A standard gland seals, grips and strain-relieves the cable but provides no designed screen termination.

Are EMC cable glands more expensive?

Yes. Indicative FOB pricing is US$0.90–6.50 per pc for nickel-plated brass EMC glands against US$0.08–1.20 for standard glands at 1,000 pcs per size. The relevant comparison is that hardware difference against the cost of diagnosing one EMI-driven fault.

Can I use a standard brass gland on shielded cable?

Only if the screen is terminated somewhere else — for example on an EMC gland plate or grounding bar inside the cabinet. If the entry point is the only place the screen can be bonded, a standard gland leaves the shielding open.

Do EMC cable glands have a higher IP rating?

No. Both types are typically IP68 as standard to IEC 60529. The EMC version adds a screen contact, not extra sealing, so the IP rating and temperature range are the same at the same size and material.

Do I need EMC glands on both ends of a motor cable?

On drive-fed circuits, yes — at the drive end and the motor terminal box, so the Faraday cage is closed. Bonding one end only leaves the interference current with nowhere to return.