L7 MCB Accessories
XENHO factory’s L7 MCB Accessories cover all core internal components of thermal-magnetic breakers, suitable for L7 series 1P/2P/3P/4P miniature circuit breakers. Products include electromagnetic coil, moving contact, bimetal strip, arc chamber, stationary contact, terminal, operating mechanism and housing for repair replacement and OEM assembly. All components are manufactured to original dimensions and material standards for full compatibility.
As a professional manufacturer in China, XENHO would like to provide you quality L7 MCB Accessories. Certified by CE, CCC, and IEC 60898-1, these products deliver stable performance. You are welcome to contact us at any time to request a quotation.
Core Accessories: Electromagnetic Coil: For short-circuit protection, wound with high-purity copper enameled wire, 10kA breaking rating. Generates strong magnetic field to instantly pull armature during short circuit, opening within 0.01 seconds. Moving Contact: Silver alloy contact, arc erosion resistant. Contact arm made of beryllium copper or phosphor bronze, mechanical life over 20,000 cycles. Bimetal Strip: For overload protection, nickel-chromium-iron alloy. Bends when heated during overload to push trip mechanism for time-delayed action, accuracy complies with IEC 60898-1 inverse time characteristic. Arc Chamber: Parallel plates of galvanized steel or stainless steel, splitting, stretching and cooling the arc for rapid extinction. Stationary Contact: Silver alloy contact, works with moving contact, spherical or flat contact surface to reduce contact resistance. Terminal: Tunnel-type design, brass or copper with tin/nickel plating. 1-32A accepts 25mm² wire, 40-63A accepts 35mm² wire, tightening torque 2.5Nm. Operating Mechanism: Composed of stamped metal parts and springs, featuring quick-close and free trip functions. Housing & Base: UL94 V-0 flame retardant PA66 engineering plastic, normal operation from -30℃ to +70℃, with green indicator strip showing contact open status.
Technical Specifications:
Breaking Capacity: 10kA. Insulation Voltage: 500V.
Impulse Withstand Voltage: 6kV.
Operating Temperature: -30℃ to +70℃.
Certifications: CE, CCC, compliant with IEC 60898-1.
Applications: Breaker repair, after-sales spare parts, OEM assembly, equipment retrofit.
Important Notes: Confirm model, rated current, poles and tripping characteristic before selection. Different specifications are not interchangeable. Replacement must be performed by professional electricians with power disconnected. Bimetal strip and coil specifications must match original product. Ensure correct arc chamber orientation. Bulk orders support material test reports and traceability codes.
Product Parameter
|
Accessories |
Material |
|
Plastic Parts |
PA6、PA66 |
|
Contact |
Copper Alloy, Silver Alloy, Silver Graphite |
|
Copper |
T1, T2, Brass |
|
Stamped Parts |
Iron with Brass Plating, Iron with Copper Plating, Brass, Copper |
|
Arc Chamber |
8-14 Plates |
|
Others |
OEM |
Loading and Shipping:
Leveraging our exceptional quality, we have established close and long-term business partnerships with clients from over 30 countries, and have received abundant positive feedback regarding our quality.
Contact Us
For any inquiries about our products, please feel free to contact us through the following methods:
WhatsApp / WeChat: 86-13123865875 86-15858812131
Email: 799199031@qq.com
Hot Tags: L7 MCB Accessories, China, Buy, Customized, Professional, OEM, Hot Sale, Quality, Durable, Classy, User-Friendly, Manufacturer, Supplier, Factory, Free Sample, for Sale, Factory Direct, Made in China
Send Inquiry
Contact Info
-
Address
Wanming Industrial Zone, Beibaixiang Town, Yueqing City, Wenzhou, Zhejiang Province, China
-
Tel
-
E-mail
Send your inquiry to XENHO for miniature circuit breaker, molded case circuit breaker, RCBO and more protection devices's pricing, details or OEM customization. Our team provides quick response and professional support for your purchasing needs.
