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Product Overview
When powering massive mechanical loads in environments where microprocessors fail, electrical protection must return to brute, indestructible physics. The CHNAILE Rugged 3-Pole Thermal-Magnetic MCCB is engineered for the world's most unforgiving industrial zones. Handling a formidable 200-Ampere continuous payload across AC 400V/690V networks, this breaker features an advanced TM 200 D dual-dial trip unit. By allowing physical adjustment of both thermal overloads and magnetic instantaneous trips, it perfectly accommodates the massive startup surges of heavy inductive machinery without frustrating nuisance tripping. Built to withstand extreme vibrations and severe ambient conditions, it ensures continuous operation for heavy maritime and subterranean extraction industries.
Technical Parameters
Device Category: | Thermal-Magnetic Molded Case Circuit Breaker (TM MCCB) |
|---|---|
Poles Configuration: | 3P (Simultaneous 3-Phase Heavy Disconnect) |
Trip Unit Technology: | TM 200 D (Dual-Adjustable Physical Core) |
Adjustable Thermal Overload (Ir): | 140A to 200A (Rotary dial selection) |
Adjustable Magnetic Short-Circuit (Im): | 1000A to 2000A (Surge immunity tuning) |
Rated Operating Voltage (Ue): | AC 220V up to AC 690V (Heavy industrial standard) |
Rated Insulation Voltage (Ui): | 750V |
Ultimate Breaking Capacity (Icu): | 35kA (at 400V) / 15kA (at 690V) |
Short-Time Withstand Current (Icw): | 10kA for 0.1s (Category B Selectivity) |
Standard Compliance: | GB/T 14048.2 / IEC 60947-2 |
1. Indestructible Dual-Adjustable Protection
High-Inertia Startup Immunity (Adjustable Im): Starting a massive rock crusher requires immense initial torque, creating a temporary magnetic surge that falsely trips standard breakers. The unique 'Im' dial allows engineers to physically raise the magnetic trip threshold up to 2000 Amps. This lets the heavy motor spool up safely while maintaining lethal short-circuit protection.
Customizable Thermal Baseline (Adjustable Ir): The heavy-duty bimetallic strip can be physically tension-adjusted between 140A and 200A. This ensures the breaker's overload response is perfectly mated to the specific full-load amperage of aging or specialized industrial motors, extending equipment lifespan.
Category B Selective Coordination: Despite its purely mechanical architecture, it achieves a robust 10kA/0.1s Icw rating. It safely endures a 10,000-Ampere fault for 100 milliseconds, allowing smaller downstream breakers to trip first, thereby preventing a total blackout of the main shipboard or mine grid.
2. Extreme Environmental Architecture
Vibration & Dust Resilient Chassis: Electronic breakers suffer from PCB failures under heavy mechanical resonance. This TM MCCB features a fully bolted, mechanically interlocked architecture that defies the relentless pounding of nearby marine diesel engines, crushing plants, and heavy stamping presses.
690V High-Voltage AC Insulation: Designed specifically for heavy industry. Encased in a premium V0-rated thermosetting polymer that repels moisture and resists carbon tracking, it operates flawlessly in AC 660V/690V grids common in deep-shaft mining operations and large maritime vessels.
Mechanical Linkage Audit (Red 'Push to Trip'): In dust-choked environments, mechanical parts can seize. The highly visible red diagnostic button empowers maintenance crews to safely force a mechanical trip, verifying the internal spring linkage is 100% responsive before authorizing live 690V operations.
3. Target Application Scenarios
Due to its invincible dual-adjustable thermal-magnetic architecture and 690V high-voltage capacity, this 200A MCCB is strictly specified by heavy-industry EPCs for:
Mining & Quarrying Infrastructure: Serving as the resilient main incoming protection for massive rock crushers, ball mills, and deep-shaft ventilation fans.
Marine & Offshore Propulsion: Acting as the primary, vibration-proof disconnect for heavy bow thrusters, shipboard cranes, and marine diesel generator networks.
Heavy Metallurgical Plants: Providing adjustable, nuisance-free protection for gigantic 3-phase centrifugal water pumps and steel-rolling mill motors.
Extreme Harsh Environment Panels: The perfect drop-in replacement for aging heavy industrial plants that require robust physical protection without transitioning to complex, sensitive digital systems.
