P.O. Box 306, North Branford, CT 06471  |  Mon–Fri 8am–5pm 800.243.3161  |  100% Woman-Owned · Est. 1947
Product Category

Coiled Cords

UL-listed coiled cords with self-retracting helical geometry — from miniature signal cords for instrumentation to shielded multi-conductor cables for industrial control. Engineered and manufactured in North Branford, CT since 1947.

Shielded & Miniature Coiled Cords

Autac coiled cords deliver signal integrity and compact flexibility where it matters most. From EMI-protected shielded lines to ultra-compact miniature cords, every product is built to perform.

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Shielded Cords for EMI Protection

Spiral-wrap and foil shielding options provide 90%+ coverage for electromagnetic interference protection. Available in PVC and Auta-Prene jacketing with individually served shielded conductors for maximum noise rejection in sensitive signal and data applications.

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Miniature Cords for Tight Spaces

Ultra-compact coiled cords with small OD profiles for instruments, medical devices, and electronics where space is at a premium. Available with optional foil shield and drain wire for applications requiring both compact size and EMI protection.

What Is a Coiled Cord?

A coiled cord is an electrical cable wound into a helical spring shape that extends under tension and retracts to its compact resting length when released. The helical geometry is permanently heat-set into the jacket material during manufacturing, giving the cord elastic spring memory without any moving parts. A typical coiled cord extends to roughly five times its retracted length and returns automatically when the load is removed.

The product spans an enormous range of applications. The same coiled-cord geometry that carries milliamps on 26 AWG signal lines is also used for 600-volt, 30-amp portable power on 10 AWG conductors. What unifies them is the self-retracting behavior the helical construction produces — the cord stays out of the way when it isn't needed and reaches when it is.

How Coiled Cords Differ from Standard Cables

A regular cable has to be coiled and uncoiled by hand and stays where you leave it. A coiled cord retracts on its own, eliminating tangles and trip hazards at the workbench, on a vehicle dash, or alongside a piece of moving equipment. Beyond convenience, coiled cords also handle repeated flex cycles better than straight cable. The helical geometry distributes mechanical stress along the entire coil rather than concentrating it at fixed bend points, which is why coiled cords are specified for portable equipment, robotic arms, retracting tool stations, and medical devices that move thousands of times over their service life.

Construction: Conductors, Insulation, Jacket, Shield

Every Autac coiled cord is built up from four engineered layers:

The cord is then heat-cured around a mandrel to set the helix geometry permanently. The result is a cable that retracts to a defined length and returns to that length cycle after cycle, for the life of the cord.

Where Coiled Cords Are Used

Autac coiled cords appear in environments where standard cable would tangle, snag, or fail prematurely under repeated flex. The categories below cover the bulk of OEM and industrial demand we see.

Industrial Equipment

Portable test instruments, hand-held controllers, retractable tool stations, and pendant cables on manufacturing equipment.

Medical Devices

Hospital cart cabling, patient monitor leads, and shielded signal lines for diagnostic imaging and instrumentation.

Telecommunications

Dispatch radio handset cords, headset cables, and shielded data lines in EMI-heavy operations centers.

Transportation & Defense

Vehicle-mounted communications, shielded sensor lines, and retractile power cables for mobile platforms.

Test & Measurement

Probe cables, instrument interconnects, and signal-grade shielded lines where induced noise corrupts readings.

OEM Custom Builds

Built-to-spec cords with custom terminations, jacket colors, conductor counts, and lengths — no minimum order quantity.

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Don't See Your Exact Spec?

We build custom coiled cords to order — any gauge, conductor count, length, shielding, and color.

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Coiled Cord Questions
A coiled cord is an electrical cable wound into a helical spring shape that extends under tension and retracts to a compact resting length when released. The helix is heat-set into the jacket material during manufacturing, giving the cord elastic spring memory without any moving parts. A typical coiled cord extends to roughly five times its retracted length and returns automatically when the load is removed.
A regular extension cord is a straight cable that has to be coiled and uncoiled by hand. A coiled cord retracts to its compact resting length on its own, eliminating tangles and trip hazards. Coiled cords also handle repeated flex cycles better because the helical geometry distributes mechanical stress along the entire coil rather than concentrating it at fixed bend points — which is why they are specified for portable equipment, robotic arms, and any application where the cable will move thousands of times over its service life.
Shielded coiled cords block electromagnetic interference (EMI) and radio frequency interference (RFI) from corrupting signal or data transmission. Spiral-wrap or foil shielding with a drain wire provides 90% or greater coverage, which is required in medical imaging, instrumentation, audio recording, dispatch communications, and any environment with motors, fluorescent lighting, or radio transmitters nearby. Without shielding, induced noise can cause sensor drift, data errors, or audible hum on signal lines.
Auta-Prene is Autac's proprietary thermoset rubber jacket compound formulated specifically for retractile cords. It delivers superior coil memory (the cord stays tightly retracted across thousands of extension cycles), high chemical and oil resistance, a wide service temperature range, and a lower coefficient of friction than standard PVC, which means it slides freely through fixtures and does not snag in workshop or manufacturing environments.
Standard Autac coiled cords are available in retracted lengths from a few inches to several feet, with a typical 5:1 extension ratio (a 12-inch retracted cord extends to roughly 60 inches). Conductor gauge ranges from fine 26 AWG signal wire up to 10 AWG power conductors rated at 30 amps and 600 volts. Conductor count runs from 2 through 25, depending on the configuration. For specifications outside the catalog, custom builds are available with no minimum order quantity.
Yes. Autac maintains UL listing on more than 400 standard catalog part numbers, with current listings spanning multiple cord types including SJT, SJTO, SJTOW, SO, SOW, and corresponding signal-cable categories. UL listing is a customer requirement in most industrial, medical, and OEM applications, and Autac maintains the certification with full lot traceability on every cord that leaves the facility.
Yes. Autac builds custom coiled cords to specification with no minimum order quantity. You specify the conductor count, gauge, voltage and current rating, retracted length, extension ratio, jacket compound, color, shielding, and termination type, and Autac handles the design, tooling, and manufacturing. Quote turnaround is typically one to three business days; lead times depend on conductor availability and termination complexity. Start a custom build at Build Your Cord.
Every Autac coiled cord is manufactured at our facility in North Branford, Connecticut. We've produced retractile and coiled cords on the same site since 1947 and are the only 100% woman-owned retractile cord manufacturer in the industry. Domestic manufacturing means short lead times for North American customers and full control over quality, lot traceability, and UL compliance.

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