MCB Miniature Circuit Breaker Industrial

Description

1. Product Overview

MCB Miniature Circuit Breaker Industrial is a high-performance, DIN-rail mountable miniature circuit breaker engineered for industrial low-voltage distribution and motor-protection applications. It provides fast, reliable overcurrent and short-circuit protection while enabling selective coordination across feeder and sub-feed circuits. The MCB delivers predictable trip characteristics, high mechanical endurance, and compact footprint—reducing panel space and simplifying electrical distribution design. For global industrial buyers, it is a strategic component that improves uptime, protects capital equipment, and lowers total cost of ownership through durable performance and simplified maintenance.

2. Key Specifications & Technical Characteristics

• Rated voltage: 230/400 V AC (single and three‑phase systems), 50/60 Hz.

• Rated current range: 0.5 A to 125 A (selectable models).

• Breaking capacity: 6 kA, 10 kA, and 16 kA options (specify per SKU).

• Tripping characteristics: B, C, D curve options for thermal-magnetic protection (for selectivity across loads).

• Material composition: Housing — flame-retardant thermoplastic (UL94 V-0); Contacts — silver-plated copper alloy; Terminals — tin-plated brass.

• Insulation: High-grade epoxy/glass-fiber reinforced polymer for dielectric strength and thermal stability.

• Mechanical endurance: ≥ 10,000 switching cycles (model dependent).

• Electrical endurance: ≥ 4,000 switching cycles under rated load (model dependent).

• Ambient operating temperature: -25 °C to +70 °C; derating guidance above 40 °C included in datasheet.

• Mounting: Standard 35 mm DIN rail (EN 60715) or screw mounting where applicable.

• Connections: Double-screw or captive-screw terminal options, cable size up to 35 mm² depending on model.

• Protection class: IP20 (front), optional IP40/IP65 accessory kits for harsher environments.

• Certifications & compliance: IEC 60898 / IEC 60947-2 compatibility (dependent on variant); CE, RoHS; optional UL/CSA on request.

• Packaging options: Individual boxed with label and datasheet; bulk packaged in cardboard cartons (25–100 pcs); wooden palletized crates for container loads; export-ready packing with moisture protection and corner protection.

• Shelf life / storage: Non-perishable; recommended dry storage at 0–40 °C, humidity < 75% RH; retain original packaging until installation.

3. Core Industrial Applications

• Primary industries: Manufacturing (discrete and process), oil & gas, mining, utilities, commercial buildings, data centers, marine and shipbuilding, water & wastewater treatment, and renewable-energy installations.

• Operational use cases: Feeder protection in low-voltage distribution boards; branch-circuit protection for motors, lighting, HVAC, and control panels; selective coordination in motor starters and variable frequency drive inputs; safety isolation for maintenance; retrofit upgrades in legacy panels to improve selectivity and reduce nuisance trips.

• Performance vs. alternatives: Compared with fuses and lower-grade breakers, the MCB offers repeatable reset capability, faster restoration of service, and easier maintenance—reducing downtime costs. With selectable B/C/D curves and higher breaking capacity options, it allows precise matching to load inrush and short-circuit levels, improving selectivity and minimizing unnecessary outages. The compact design saves panel space, lowering enclosure and installation costs.

4. Competitive Advantages

• Quality consistency: Manufactured to controlled process standards, batch traceability, and incoming material inspection ensure uniform electrical and mechanical performance.

• Supply reliability: Industrial-scale production, multi-sourcing for critical components, and safety-stock programs minimize lead-time variability for large buyers.

• Logistics capability: Export-ready packaging, palletized container loading plans, and experience with multimodal shipping (FCL/LCL/air) enable predictable delivery for global supply chains.

• Price competitiveness: Tiered pricing for volume buyers and contract pricing for repeat procurement reduce unit cost and total landed cost.

• Sustainability: RoHS-compliant materials, long service life that reduces replacement frequency, and recyclable thermoplastics in housing lower lifecycle environmental impact.

• Technical support & documentation: Full technical datasheets, coordination tables, application notes, installation guides, and available factory engineering support for protection coordination and panel design. Warranty and spare-parts policies available under commercial agreement.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): BULK 20 MT (metric tonnes).

• Loading capacity (MT per container): Typical 20-ft container loading up to 22–24 MT, 40-ft container up to 26–28 MT depending on carton, pallet configuration, and exact model weight. Final loading plan to be confirmed with purchaser based on SKU weights and export packaging.