Description
2.1mm x 5.5mm Female DC Power Jack to 2-Pin Screw-Terminal Block Adapter
Product Overview
The Female DC Power Jack to 2-Pin Screw-Terminal Adapter is a heavy-duty, high-reliability quick-connect interface component engineered to bridge standard low-voltage barrel plugs with raw, stripped wire conductors. Outfitted with an industry-standard 2.1mm x 5.5mm female barrel socket on one end and a heavy-duty 2-pin screw-down terminal block on the other, this adapter completely eliminates the need for manual wire splicing, electrical taping, or soldering iron setups.
Designed for robust field wiring, permanent commercial installations, and rapid laboratory prototyping, the terminal block features integrated internal clamping plates adjusted via top-facing steel screws. This mechanical clamping system ensures an incredibly high-tensile, vibration-proof wire bond that will not slip out over time. Constructed with a high-impact, flame-retardant outer polymer shell and high-conductivity internal contacts, it ensures an ultra-low resistance connection capable of delivering stable DC power to security hardware, LED arrays, and custom circuit modules.
Key Features
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Heavy-Duty Screw Clamp Architecture: Outfitted with robust top-facing steel screws and internal compression plates that lock stranded or solid bare wires into a tight, high-tensile mechanical bond.
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Universal 2.1mm x 5.5mm Footprint: Precision-machined to form a tight, snap-fit physical connection with matching standard 2.1mm male barrel plugs, entirely preventing intermittent power dropouts.
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High-Contrast Polarity Markings: Molded with large, explicit positive ($+$) and negative ($-$) symbols directly onto the polymer shell, ensuring safe visual routing and preventing reverse-polarity circuit damage.
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Highly Reusable & Durable Construction: Built to withstand repeated wire adjustments without degradation; eliminates stripped threads or fractured internal contacts under standard torque.
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Flame-Retardant Engineered Housing: Encased in a heavy-duty, impact-resistant insulation jacket that isolates electrical current safely and resists localized thermal buildup under load.
Technical Specifications
| Parameter | Specification |
| Component Type | Female DC Barrel Jack to Solderless Screw-Terminal Block Adapter |
| Barrel Socket Size | 2.1mm Center Pin Inside Diameter (ID) x 5.5mm Outside Diameter (OD) |
| Terminal Connection Type | 2-Pin Screw-Down M3 Clamp Terminals |
| Polarity Layout | Standard Center Positive configuration ($+$ Pin maps to Inner Pin) |
| Housing Material | High-Impact, Flame-Retardant ABS / PVC Engineering Plastic |
| Internal Contacts | High-Conductivity Copper Alloy, Nickel/Silver-Plated |
| Rated Operating Voltage | 12V to 36V DC Max |
| Rated Current Load | 5A Continuous Max (Depending on wire gauge utilized) |
| Contact Resistance | $\le 0.02\,\Omega$ ($20\,\text{m}\Omega$) |
| Insulation Resistance | $\ge 100\,\text{M}\Omega$ at 500V DC |
| Compatible Wire Gauge | Accommodates 16 AWG to 26 AWG solid or stranded bare wires |
Applications
The go-to high-tensile termination interface for reliable field wiring, prototyping labs, and industrial distribution layouts:
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CCTV Surveillance System Field Wiring: Securely connecting raw twin-lead power trunks extending from central distribution boxes directly into local 12V security cameras outfitted with standard male plugs.
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Solderless Breadboard & Prototyping Links: Delivering direct DC voltage from commercial wall bricks cleanly onto bare hookup wires feeding into breadboard power rails, Arduino pins, or relay grids.
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LED Strip Light Power Interfacing: Providing a reliable, heavy-duty power input link to attach single-color LED tape lines to standalone switching DC power supplies.
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Custom Enclosure Power Testing: Serving as a permanent external power interface on hardware test jigs, validation panels, and custom educational electronics trainer boards.
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