One Way Plug Key
Product Code : SCL-PLE-11808
The StemAids One-Way Plug Key is a fundamental laboratory switch engineered for the empirical study of circuit continuity and the precise control of current flow. Featuring a heavy-duty two-block brass assembly and a precision-ground tapered plug, this apparatus allows students to open or close a circuit branch with ultra-low contact resistance. Manufactured to ISO 9001:2015 standards, it is an essential component for Secondary and University-level physics experiments, particularly those involving sensitive galvanometers, bridge balancing, and Potentiometer studies.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
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Switch Type |
Single-Pole Single-Throw (SPST) Plug Switch |
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Base Construction |
High-impact, insulated polymer or polished seasoned hardwood |
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Block Material |
Heavy-duty, high-conductivity brass blocks |
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Plug Interface |
Precision-ground tapered brass plug with an insulated molded head |
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Configuration |
Two-block, single-gap design for simple on/off control |
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Interface Hardware |
Two 4mm safety-shrouded sockets or heavy-duty brass binding posts |
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Current Rating |
Optimized for laboratory DC circuits (typically up to 5A) |
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ISO Compliance Code |
Manufactured under ISO 9001:2015 Quality Management Systems |
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HS Code |
8536.50.00 (Electrical switches for educational use) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Circuit Logic Interface: Facilitates student understanding of "make-and-break" circuit dynamics, supporting the core curriculum of Basic Electricity and Magnetism.
- Resistance Minimization: Enables the physical study of contact points; learners apply the plug key to ensure a "zero-leakage" connection that prevents parasitic resistance from skewing sensitive data.
- Experimental Control Analysis: Supports the analysis of thermal drift; students use the plug key to isolate batteries or standard cells when not in use, preventing the heating of resistors and ensuring the longevity of primary cells.
- Instrument Protection Evaluation: Allows students to evaluate the importance of circuit protection; the key is used as a safety gate to prevent accidental high-current surges through delicate galvanometers or ammeters.
International Logistics & Compliance
StemAids ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade seaworthy crating (ISPM-15 compliant) featuring vacuum-sealed moisture barriers to protect the brass blocks from oxidation and tarnishing during maritime transit.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and a datasheet for standard laboratory circuit integration.
- Durability: Tropicalized design featuring anti-tarnish coatings and vacuum-seasoned bases to prevent warping, ensuring the tapered plug fits perfectly even in high-humidity climates.
Direct OEM Sourcing Advantages
Procuring the StemAids One-Way Plug Key directly ensures vertical manufacturing control:
- Precision Taper Grinding: Every plug is individually matched to the bore of its brass block to ensure maximum surface contact area, resulting in ultra-low "Zero Resistance" (typically <01Ω).
- High-Insulation Integrity: Direct oversight of the base manufacturing ensures zero leakage current between the blocks, which is critical for high-sensitivity null-point measurements.
- Direct Factory Spares Availability: Guaranteed availability of replacement tapered plugs and terminal binding posts to maximize the long-term ROI of laboratory furniture.
- Manufacturing Control: Direct oversight of the assembly ensures that the gap is uniform and the blocks are perfectly parallel, preventing mechanical stress on the plug during frequent student use.
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