Description
2.1mm x 5.5mm Female DC Power Jack to 2-Pin Press-Terminal Block Adapter
Product Overview
The Female DC Power Jack to 2-Pin Press-Terminal Adapter is an indispensable 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 toolless 2-pin spring-actuated press terminal on the other, this adapter completely eliminates the need for manual wire splicing, electrical taping, or soldering iron setups.
Designed for rapid prototyping and field wiring installations, the press terminal block features integrated high-elasticity spring clamps that grip bare wires firmly with a single push. 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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Toolless Press-Terminal Architecture: Features dual spring-actuated levers that open easily when pressed and clamp down forcefully upon release, establishing a vibration-proof wire bond in seconds.
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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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Screw-Free Reusable Design: Eliminates stripped screw heads and loose connections; the internal constant-tension spring clamps automatically adjust to the wire gauge for a permanent, reliable grip.
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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 Press-Terminal Block Adapter |
| Barrel Socket Size | 2.1mm Center Pin Inside Diameter (ID) x 5.5mm Outside Diameter (OD) |
| Terminal Connection Type | 2-Pin Spring-Loaded Press 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-Plated |
| Rated Operating Voltage | 12V to 36V DC Max |
| Rated Current Load | 3A to 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 24 AWG solid or stranded bare wires |
Applications
The go-to solderless termination interface for fast field wiring, prototyping labs, and quick-disconnect layouts:
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CCTV Surveillance System Field Wiring: Rapidly 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, easily disconnectable 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 temporary or permanent external power interface on hardware test jigs, validation panels, and custom educational electronics trainer boards.
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