Schneider MT08N1 3P 800A

Schneider MT08N1 3P 800A is a fixed 3-pole intelligent air circuit breaker (ACB) belonging to the Masterpact MT series. It has a frame current and rated current of 800A, with an N1-class breaking capacity (50kA@400V). Suitable for incoming line/bus tie protection and power distribution in power distribution systems, it is commonly used in primary/secondary power distribution of industrial plants, large buildings and data centers. Below are the complete specifications and core details:

Core Technical Parameters

Core Functions & Protection Features

1.  Full Intelligent Protection: Realizes long-time delay (overload), short-time delay (short circuit), instantaneous (heavy short circuit) and earth fault protection via the Micrologic control unit. Parameters can be precisely set to adapt to cascade coordination in multi-level power distribution systems.
2.  Measurement & Monitoring: Displays real-time electrical parameters such as current, voltage and power, with fault memory and alarm output functions. Supports Modbus and other communication protocols, and can be integrated into SCADA systems.
3.  Zero Arcing Design: Optimized arc extinguishing chamber with zero arcing distance, improving cabinet safety and space utilization.
4.  Isolation Function: Compliant with IEC 60947-2, can be used as an isolating switch (without controller).

Application Scenarios & Selection Key Points

– Typical Scenarios: Primary/secondary power distribution links such as incoming line cabinets of industrial plants, power distribution of large buildings, UPS output of data centers, photovoltaic/energy storage combiner boxes, etc. It is used for power distribution and short-circuit, overload, earth fault protection of lines/equipment.

– Key Selection Tips:

– Control Unit: 2.0 for basic protection; 5.0/6.0 with added measurement and communication functions, select according to requirements.

– Mounting Type: Fixed type is cost-effective; drawout type facilitates maintenance and allows breaker replacement without power outage.

– Breaking Capacity: N1 (50kA) meets general power distribution needs; upgrade to N2/H1/H2 class if short-circuit current is high.

Procurement & Replacement Recommendations

1.  Complete Order Specification: Must specify MT08N1 + control unit model + mounting method + pole number, e.g., MT08N1 F MIC 2.0 3P.
2.  Replacement Compatibility: Can directly replace MT08N2/H1 and other models with the same frame size. Dimensions differ from the NW series; verify cabinet installation space before replacement.
3.  Price Reference (December 2025): Domestic fixed type with MIC 2.0 control unit is approximately RMB 14,500-16,000 per unit; drawout type is priced higher.

Breaking Capacity Comparison Table of Schneider Masterpact MT08 Series (800A)

Complete Order Code Examples & Stocking Recommendations

1.  Complete Order Code Specification (4 Core Elements Required)

Ordering Schneider MT series requires specifying frame size + breaking capacity class + mounting method + control unit + pole number. Examples are as follows:

– MT08N1 F MIC 2.0 3P: 800A N1 class, fixed type, Micrologic 2.0 control unit, 3-pole

– MT08H1 D MIC 5.0 4P: 800A H1 class, drawout type, Micrologic 5.0 control unit, 4-pole

2.  Stocking & Selection Recommendations
3.  Select by Short-circuit Current

– First calculate the expected short-circuit current at the distribution point: choose N1 class (highest cost-performance) if ≤50kA; N2 class if 50-70kA; H1/H2 class if >70kA.

– For industrial plants close to substations with high short-circuit current, prioritize H1 class.

2.  Select by Operation & Maintenance Requirements

– Choose fixed type for general power distribution scenarios, featuring low cost and small space occupation;

– Choose drawout type for scenarios where power outage for maintenance is not allowed (e.g., data centers, hospitals), enabling live replacement of the breaker body.

3.  Select by Functional Requirements

4.  Stocking Recommendations

– For regular trade stocking, prioritize MT08N1 F MIC 2.0 3P, which adapts to 80% of general power distribution scenarios and ensures fast inventory turnover;

– For heavy industry customers, stock a small quantity of MT08H1 F MIC 5.0 3P to meet high short-circuit current requirements;

– Customize drawout models on demand; large-scale stocking is not recommended (high capital occupation and strong model specificity).

Core Parameter Comparison Table: Schneider MT08 Series vs. Chint NA8G-800 Series

(Both are 800A frame, 3-pole, fixed type, basic protection type, suitable for general power distribution scenarios)

Selection Decision Recommendations

1.  Scenarios for Prioritizing Schneider MT08 Series

– Export projects (e.g., overseas markets such as Algeria), power distribution projects requiring international certifications;

– Scenarios with high requirements for short-circuit breaking capacity and reliability, such as data centers and heavy industrial plants;

– Intelligent power distribution systems requiring energy consumption monitoring and remote control.

2.  Scenarios for Prioritizing Chint NA8G-800 Series

– Domestic civil buildings, small and medium-sized factories and other general power distribution scenarios with limited budgets;

– Localized renovation projects requiring fast delivery and after-sales response;

– Power distribution circuits with only basic short-circuit and overload protection needs, no intelligence requirements.

3.  Replacement Compatibility Notes

– The two series have slightly different mounting dimensions; verify cabinet installation space before replacement;

– Chint NA8G series can upgrade measurement and control functions by installing intelligent trip units (e.g., NA8G-M), with the cost still lower than that of similarly configured Schneider models.