Curtis SP-600
Curtis SP-600
The Curtis SP-600 is a wall-mounted surge protector designed to plug directly into a duplex receptacle without the use of a power cord.
The documented example provides six grounded AC outlets and integrated coaxial-cable surge protection through dedicated IN and OUT connectors. Unlike many modern wall-mounted surge protectors, the SP-600 relies upon dual AC plug assemblies for mechanical retention and does not utilize the center faceplate screw commonly used by contemporary wall-hugger designs.
The documented example was purchased from Goodwill on 19 September 2026 for $5.00 and was subsequently preserved by the OldSurge Archive for documentation, testing, and analysis.
Overview
| Manufacturer | Curtis |
|---|---|
| Model | SP-600 |
| Product Type | Wall-Mounted Surge Protector |
| AC Outlets | 6 |
| Coaxial Protection | Yes |
| Cord | None |
| Mounting Method | Dual Plug Assemblies |
| Country of Manufacture | Pending Documentation |
Notable Characteristics
- First Curtis product documented by the OldSurge Archive.
- First wall-mounted surge protector documented by the archive.
- Six grounded AC outlets.
- Integrated coaxial surge protection with dedicated IN and OUT connectors.
- Dual-plug wall-hugger design.
- Does not utilize a center faceplate-retention screw.
- Riveted enclosure construction may require destructive techniques for internal examination.
- Purchased from Goodwill on 19 September 2026 for $5.00.
Specifications
- Manufacturer: Curtis
- Model: SP-600
- Product Type: Wall-Mounted Surge Protector
- AC Outlets: 6
- Coaxial Protection: Yes
- Coaxial Connectors: F-Type (IN / OUT)
- Cord Length: None
- Mounting Method: Direct wall receptacle connection
- Width: Approximately 3.38 in (8.6 cm)
- Height: Approximately 5.13 in (13.0 cm)
- Depth: Approximately 1.25 in (3.2 cm) excluding plug assemblies
Weight
Pending documentation.
Physical Characteristics
The Curtis SP-600 utilizes a molded plastic enclosure intended to plug directly into a standard duplex receptacle.
Six grounded outlets are arranged in two vertical rows of three receptacles each.
The lower portion of the enclosure incorporates coaxial-cable protection using standard threaded F-type connectors labeled IN and OUT.
Unlike most modern wall-mounted surge protectors, the SP-600 lacks a center mounting screw intended to secure the device to the receptacle. Mechanical retention instead relies on two sets of AC plug blades mounted on the rear of the enclosure.
The enclosure features curved ribbed side panels that project beyond the main housing and contribute to the unit's distinctive appearance.
Photographs
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Front view showing six grounded outlets and Curtis branding. -
Integrated coaxial surge-protection connectors labeled IN and OUT. -
Side profile showing wall-hugger construction and cosmetic paint flecks.
Condition Upon Acquisition
The documented example exhibits relatively minor cosmetic wear consistent with normal use.
Small paint flecks are present on one side of the enclosure. Minor scuffs and handling marks are visible, but no evidence of melting, cracking, significant discoloration, or major physical damage was observed during initial examination.
Overall condition is above average for a secondhand surge protector acquired through a thrift store.
Pending documentation.
Functional Testing
Pending documentation.
Construction
Pending documentation.
Teardown
Pending documentation.
Collection History
The documented example was acquired by the OldSurge Archive in 2026 for preservation and documentation.
Documented Example
- OldSurge ID: OS-0020
Notes
- The front of the enclosure uses the model designation "SP 600" while the rear data plate identifies the product as SP-600.