COXOC CO-001S Variant (OS-0030)

The COXOC CO-001S (Variant OS-0030) is a documented example of the COXOC CO-001S six-outlet surge protector preserved by the OldSurge Archive.

Although externally similar to the previously documented CO-001S specimen, this example exhibits several notable differences including a shorter power cord, lower overall weight, an illuminated rocker switch that remains functional, and a power-cord assembly bearing COXOC branding rather than the Apollo-manufactured cord identified on the archive's first documented example.

The specimen provides evidence that multiple manufacturing variations of the CO-001S were produced and demonstrates how apparently identical consumer surge protectors often incorporated different components, suppliers, and construction details during production.

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  Overall view of COXOC CO-001S Variant (OS-0030) showing the six-outlet configuration, textured enclosure, shortened power cord, and molded COXOC-branded attachment plug.

Overview

The COXOC CO-001S is a consumer surge protector intended to provide both surge suppression and AC power distribution for computers, peripherals, office equipment, and household electronics.

The design incorporates six grounded outlets arranged in three molded pairs, a rocker power switch, a resettable circuit breaker, and a permanently attached power cord. Its heavily textured enclosure and stepped switch housing give the unit a distinctive appearance compared with many later surge protectors utilizing smoother case designs.

Limited documentation of the model has presently been identified. Surviving examples suggest that the CO-001S originated during a period when Taiwanese manufacturers supplied large quantities of surge protectors and power-distribution products to North American consumers, often under lesser-known brand names.

The documented example was acquired as part of the OldSurge Archive's efforts to preserve and document products from manufacturers that have largely disappeared from the consumer surge-protection market.

Significance

The documented specimen is significant because it demonstrates variation within the COXOC CO-001S product line.

At first glance the unit appears nearly identical to the archive's previously documented example. Closer examination, however, revealed differences in cord length, overall weight, switch functionality, and power-cord markings.

These variations suggest that COXOC may have sourced components from multiple suppliers or introduced manufacturing revisions during the production life of the model. Such differences are common among consumer electrical products of the 1990s but are often undocumented.

The specimen therefore provides a useful reference for understanding manufacturing variation within low-cost consumer surge protectors.

Documented Example

• OldSurge ID: OS-0030
• Manufacturer: COXOC
• Model: CO-001S
• Manufacturing Date: 1990s (estimated)

Comparison With OS-0028

Characteristic	OS-0028	OS-003X
Weight	14.3 oz (405 g)	12.1 oz (343 g)
Cord Length	Approximately 54 in (137 cm)	Approximately 39 in (99 cm)
Cord Manufacturer	Apollo	COXOC
Switch Illumination	Not functioning	Functional
Plug Condition	Evidence of heat exposure	No significant heat damage observed
Manufacturer Branding	Molded COXOC logo on plug	Molded COXOC logo on plug and cord assembly

Specifications

• Manufacturer: COXOC
• Model: CO-001S
• Device Type: Surge Protector
• Manufacturing Date: 1990s (estimated)

• Outlets: 6 grounded outlets
• Electrical Rating: 125V, 15A, 60Hz
• Transient Suppression Voltage Rating: 330V

• Weight: Approximately 12.1 oz (343 g)

• Power Cord Length: Approximately 39 in (99 cm)
• Cord Type: SJT
• Conductors: 3 × 14 AWG

• Plug Type: NEMA 5-15P
• Plug Style: Straight-Blade

• Surge Protector UL File Number: E147475

Notable Characteristics

• Weight approximately 15% lower than documented specimen OS-0028.
• Shorter power cord than documented specimen OS-0028.
• Illuminated rocker switch remains functional.
• COXOC-branded attachment plug and cord assembly.
• Externally similar to OS-0028 but exhibits multiple manufacturing differences.

Weight

The documented example weighs approximately 12.1 ounces (343 g).

This represents a reduction of approximately 2.2 ounces (62 g) compared with specimen OS-0028, which weighed approximately 14.3 ounces (405 g).

The difference suggests that one or more internal or external components differ between the two documented examples. Potential explanations include differences in cord assemblies, internal metal components, surge-suppression circuitry, or other manufacturing revisions. Additional examination will be required to determine the source of the weight difference.

Physical Characteristics

The documented specimen utilizes the same general enclosure design as specimen OS-0028. The housing incorporates a textured pebble-grain finish, six grounded receptacles arranged in three outlet pairs, a raised switch housing, and a permanently attached power cord.

A red rocker power switch is located at the cord-entry end of the enclosure. During testing, the switch illumination remained functional when power was applied.

The documented specimen utilizes a shorter permanently attached power cord measuring approximately 39 inches (99 cm), compared with approximately 54 inches (137 cm) on specimen OS-0028.

The attachment plug incorporates molded COXOC branding. Visible cord markings differ from those documented on specimen OS-0028, suggesting that the two units may have utilized different cord suppliers or originated from different production runs.

No significant heat-related damage was observed on the attachment plug or cord assembly.

Photographs

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  Overall view of COXOC CO-001S Variant (OS-0030) showing the six-outlet configuration, textured enclosure, shortened power cord, and molded COXOC-branded attachment plug.
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  Six grounded receptacles arranged in three molded outlet pairs, illustrating the distinctive outlet layout shared with other documented COXOC CO-001S surge protectors.
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  Close-up of the red illuminated rocker power switch and textured enclosure surface. Unlike specimen OS-0028, the switch illumination remained functional during testing.
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  Left-side profile showing the elevated switch housing, textured enclosure, integral strain relief, and shortened power cord.
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  Right-side profile showing the textured enclosure, raised switch section, and overall case geometry characteristic of the COXOC CO-001S design.
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  Outlet-end view showing the rounded enclosure profile, textured surface finish, and paired-outlet arrangement extending the full length of the surge protector.

Date Codes

No serial number, manufacturing date, or date-code markings have presently been identified.

The documented specimen shares the same external model designation as specimen OS-0028 and carries the same published electrical ratings. However, several physical differences indicate that the two examples may originate from different production runs or manufacturing revisions.

Additional documentation and internal examination may provide further information regarding manufacturing dates or production history.

Condition Upon Acquisition

The documented specimen was acquired in used condition and exhibited moderate cosmetic wear consistent with long-term consumer use.

The enclosure remained structurally intact and retained its textured finish. Minor scuffs, scratches, and surface discoloration were observed.

Unlike specimen OS-0028, no obvious heat-related damage was observed on the attachment plug.

The rocker switch remained intact and functional. During testing, the switch illumination operated normally.

The specimen was cleaned prior to detailed photography and documentation.

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  Condition upon acquisition prior to cleaning and documentation.
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  Installed in its final service location prior to retirement.

Functional Testing

The documented specimen successfully passed basic operational testing.

When connected to utility power, the rocker switch controlled power delivery to all receptacles and the integrated switch lamp illuminated normally when the unit was switched on.

Testing with a receptacle tester confirmed proper hot, neutral, and ground connections at the protected outlets.

Unlike the archive's first documented CO-001S example, this specimen retained a functioning illuminated switch. The observation indicates that at least some CO-001S units originally incorporated lamp-equipped rocker switches rather than non-illuminated switch assemblies.

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  Connected to utility power with the rocker switch in the OFF position.
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  Connected to utility power during functional testing.
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  Outlet tester indicating correct wiring and grounding.

Teardown

The COXOC CO-001S enclosure is secured using three Phillips-head screws and can be opened non-destructively.

Removal of the upper housing revealed an unusually simple internal construction consisting of a stamped-metal outlet-contact assembly, a resettable circuit breaker, a rocker power switch, and a single metal-oxide varistor (MOV) providing surge suppression.

Power enters through the attached Apollo-manufactured SJT 14/3 power cord before passing through a RONG FENG RF-112B resettable circuit breaker rated 15 amperes at 125 volts AC. Electrical distribution is accomplished through a long stamped-metal contact assembly extending the length of the enclosure and serving all six receptacles.

Unlike many surge protectors documented by the archive, the CO-001S does not utilize a printed-circuit board. Surge suppression is provided solely by a single SAS 241KD14 metal-oxide varistor connected directly between the hot and neutral conductors using short wire leads and soldered connections.

No additional MOVs, line-to-ground suppression paths, filtering inductors, capacitors, thermal cutoffs, indicator circuitry, or other supplemental surge-suppression components were observed. The design therefore represents one of the simplest surge-suppression implementations currently documented by the OldSurge Archive.

Despite the simplicity of the suppression circuitry, the unit incorporates a substantial stamped-metal outlet-contact assembly, a full 15-amp resettable circuit breaker, and a 14 AWG power cord. The design appears to prioritize robust power distribution while providing only basic transient-voltage suppression.

The documented MOV remains commercially available through modern electronic-component distributors. Contemporary component documentation identifies comparable 241KD14 devices as 14 mm MOV surge suppressors intended for AC power-line protection applications.

UL certification records additionally confirm that the RONG FENG RF-112B belongs to a certified supplementary-protector product family manufactured by Rong Feng Industrial Co., Ltd.

No evidence of overheating, damaged conductors, arcing, failed components, or internal electrical failure was observed. Internal components appeared consistent with normal long-term use.

The observed heat-related damage at the attachment plug therefore appears unrelated to any obvious internal failure within the surge protector itself.

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  CO-001S opened following removal of the three enclosure screws.
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  Interior of the upper enclosure showing outlet guides and structural reinforcements.
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  Stamped-metal outlet-contact assembly providing power distribution to all six receptacles.
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  Upper-enclosure cord-entry section showing molded structural features and cavity markings.
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  Cord-entry section showing the switch assembly, circuit breaker, wiring, and surge-suppression components.
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  RONG FENG RF-112B resettable circuit breaker rated 15A at 125VAC.
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  Cord-entry detail showing the single-MOV surge-suppression circuit.
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  SAS 241KD14 metal-oxide varistor (MOV) providing surge suppression.

Comparison Notes

The COXOC CO-001S occupies a distinctive position within the OldSurge Archive because it demonstrates an unusually minimalist approach to surge protection. Unlike products from APC, Universal, Globe Electric, PowerSentry, and other manufacturers that incorporate multiple surge-suppression components, dedicated circuit boards, filtering networks, or diagnostic indicators, the CO-001S relies upon a single metal-oxide varistor connected directly across the incoming AC supply.

Despite the simplicity of its suppression circuitry, the unit incorporates several comparatively robust power-distribution features including a full 15-amp resettable circuit breaker, an Apollo-manufactured 14 AWG SJT power cord, and a substantial stamped-metal outlet-contact assembly extending the length of the enclosure.

The resulting design appears to emphasize reliable power distribution, straightforward manufacturing, and low component count while providing basic transient-voltage suppression. As such, the CO-001S provides a useful reference point for understanding the lower-complexity end of the consumer surge-protector market.

Recall Information

No recall information has presently been identified for the COXOC CO-001S.

Historical References

Teardown examination identified several components for which modern documentation remains available.

Surge suppression within the documented example is provided by a SAS 241KD14 metal-oxide varistor (MOV). Comparable 241KD14 devices remain commercially available through modern electronic-component distributors and continue to be marketed for AC power-line surge-suppression applications.

The CO-001S also incorporates a RONG FENG RF-112B resettable circuit breaker. Contemporary UL certification records identify the RF-112B as part of a certified supplementary-protector product family manufactured by Rong Feng Industrial Co., Ltd.

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  Modern Mouser Electronics listing for a 241KD14 metal-oxide varistor comparable to the component documented within the COXOC CO-001S.
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  UL certification information for the RONG FENG RF-112B circuit-breaker series documented within the COXOC CO-001S.

Notes

• OldSurge ID: OS-0030.
• Documented as a variant of the COXOC CO-001S.
• Weighs approximately 12.1 ounces (343 g).
• Utilizes a shorter power cord than specimen OS-0028.
• Illuminated rocker switch remained functional during testing.
• Attachment plug incorporates molded COXOC branding.
• Cord markings differ from those documented on specimen OS-0028.
• Internal construction has not yet been documented.

Related Articles

• COXOC
• Power Cord Comparison
• Surge Protectors
• Collection Index