TWIST LOCK PLUGS Product Catalog & Company Overview COMPANY AT A GLANCE 1988 Founded Silicon Valley, CA 30+ Years Experience Power cord manufacturing 37+ Countries Safety compliance 1,000+ Employees Engineering & logistics Linvox Corporation (formerly Tumbler Corporation) is a Silicon Valley-based contract manufacturer specializing in top- quality power cords and value-added services. Serving the OEM market since 1988, the company operates 300,000 sq. ft. of ISO 9001:2000 certified design and manufacturing space. Their mission: to be the one-stop resource for cost-effective energy solutions delivered to the highest safety standards. WHAT ARE TWIST LOCK PLUGS? The Smart Connection Solution Twist-and-lock mechanism prevents accidental disconnection Curved blades rotate to form a secure, locked electrical connection Used in industrial, commercial & critical applications Follow NEMA locking standards (L-series) Available in 15A, 20A & 30A amperage ratings Rated for 125V and 250V AC applications K E Y T E C H N I C A L S P E C S Standard NEMA Locking (L-Series) Amperage 15A / 20A / 30A Voltage 125V / 250V AC Approval UL / CSA / CUL Material Molded Thermoplastic Countries Compliant in 37+ RoHS Fully Compliant TWIST LOCK PLUG PRODUCT LINEUP EL-311 NEMA L5-20P 20A · 125V · 2P/3W ↓ Spec Sheet Available EL-312 NEMA L6-20P 20A · 250V · 2P/3W ↓ Spec Sheet Available EL-313 NEMA L14-20P 20A · 125/250V · 3P/4W ↓ Spec Sheet Available EL-314 NEMA L14-30P 30A · 125/250V · 3P/4W ↓ Spec Sheet Available EL-315 NEMA L5-30P 30A · 125V · 2P/3W ↓ Spec Sheet Available EL-316 NEMA L6-30P 30A · 250V · 2P/3W ↓ Spec Sheet Available EL-317 NEMA L5-15P 15A · 125V · 2P/3W ↓ Spec Sheet Available EL-318 NEMA L6-15P 15A · 250V · 2P/3W ↓ Spec Sheet Available CUSTOM NEMA Custom Varies · Varies · Custom ↓ Spec Sheet Available NEMA LOCKING STANDARDS EXPLAINED L5 Series 125V · 2-Pole · 3-Wire 15A & 20A & 30A Models: EL-311, EL-315, EL-317 L6 Series 250V · 2-Pole · 3-Wire 15A & 20A & 30A Models: EL-312, EL-316, EL-318 L14 Series 125/250V · 3-Pole · 4-Wire 20A & 30A Models: EL-313, EL-314 Custom Any configuration to your specs Models: Contact for quote The 'L' prefix denotes Locking type. The number indicates the configuration class. Suffix 'P' = Plug. 'R' = Receptacle. INDUSTRIES & APPLICATIONS 🏥 Healthcare Hospitals use locking plugs on critical equipment — anesthesia machines, patient monitors, surgical lights — to eliminate accidental disconnections. 🏭 Industrial / MFG Manufacturing floors rely on 30A twist lock plugs for high-power machinery, welding equipment, and conveyor systems. ️ 🖥️ Data Centers Server racks and UPS systems use L6-20P and L5-20P plugs for reliable, vibration- resistant power connections. 🏥 Events & A/V Stage lighting, professional audio, and outdoor events depend on twist locks for safe, weatherproof connections. ️ 🏗️ Construction Portable generators and temporary power panels on job sites commonly use L14-30P locking plugs for 4-wire applications. 🏥 Commercial Buildings HVAC systems, elevators, and building management systems use NEMA locking plugs for maintenance safety. CERTIFICATIONS & COMPLIANCE UL Underwriters Laboratories US safety standard for electrical products. UL Listed plugs meet rigorous safety and performance benchmarks required for North American markets. CSA / CUL Canadian Standards Association Canada market approval. Products like EL-317 carry CUL approval, ensuring compliance with Canadian Electrical Code requirements. ISO 9001 Quality Management System All 300,000 sq. ft. of Linvox manufacturing space is ISO 9001:2000 compliant, guaranteeing consistent quality control across production. RoHS Restriction of Hazardous Subs. Linvox products ban lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE — fully compliant with the EU RoHS Directive. Safety compliant in 37+ countries worldwide · RoHS & ISO standards maintained across all product lines VALUE-ADDED SERVICES 01 Testing & Certifications In-house and third-party testing labs to certify products for US, Canada, EU, and global markets. 02 Engineering Solutions Custom product design leveraging 30+ years of power engineering expertise and on-site engineers. 03 Design Doc Review Expert review of customer designs to identify compliance gaps before mass production. 04 Kitting, Assembly & Labelling Full kitting, retail packaging, and branded labelling services for finished products. 05 Plastic Injection Molding Sourcing and contract manufacturing of custom molded plastic components for power products. 06 Contract Manufacturing Complete turnkey manufacturing from prototype through high-volume production runs. WHY CHOOSE LINVOX CORPORATION? 🔒 Safety First Every product meets UL, CUL, CSA, and RoHS standards. Linvox maintains compliance in 37+ countries. ⚡ 35+ Years Expertise Born from a partnership with one of Asia's leading power manufacturers in Silicon Valley, 1988. 🏥 Custom Engineering From L5-15P to L14-30P and everything in between — including fully custom cord sets per your specs. 🏥 Eco-Friendly Focus ISO & RoHS certified. Vision is to make every power connection safe, secure, and eco-friendly. 🏥 Partner Mentality Linvox treats clients as internal partners, not one-time customers. Lifelong relationships drive every decision. 📦 Full Fulfillment From initial design review through kitting, labelling, and delivery — one seamless supply chain partner. READY TO POWER YOUR NEXT PROJECT? 🏥 Phone (510) 657-3002 ✉️ Email info@linvoxcorp.com 🏥 Website linvoxcorp.com 🏥 Address Fremont, CA 94538 GET A FREE QUOTE TODAY Mon–Fri 8AM–5PM · linvoxcorp.com/contact · Trusted by OEM engineers since 1988 Linvox Corporation — We're the bridge to your power.