Motor Circuit Protection Solution – Schneider Electric MT08N1 | TeSys Series
The Schneider Electric MT08N1 is a compact 8A 3-pole air circuit breaker engineered for reliable short-circuit and overload protection in industrial motor control centers, machine panels, and automation cabinets. Designed within the TeSys product family, it delivers consistent performance in demanding environments where uptime is non-negotiable.
Where This Product Is Used
- Motor Control Centers (MCC): Protects 3-phase induction motors up to 4 kW / 5.5 HP at 400 V AC in manufacturing lines and pump stations.
- Machine Tool Panels: Used as a branch circuit protector in CNC machining centers, injection molding machines, and packaging equipment.
- HVAC & Building Automation: Safeguards fan motors, compressors, and chiller units in commercial building management systems.
- Water Treatment Plants: Provides overcurrent protection for submersible pump drives and dosing pump controllers.
- Food & Beverage Processing: Installed in hygienic control panels for conveyor drives and agitator motors requiring IEC-compliant protection.
- Oil & Gas Auxiliary Panels: Protects auxiliary motor loads in wellhead control panels and compressor skids.
Technical Specifications
- Model / SKU: MT08N1
- Brand: Schneider Electric
- Series: TeSys
- Type: Air Circuit Breaker (Motor Circuit Breaker)
- Rated Current (Ir): 8 A
- Poles: 3-Pole
- Rated Voltage: Up to 690 V AC
- Breaking Capacity (Icu): 50 kA @ 415 V AC
- Trip Class: Class 10A (motor protection)
- Mounting: DIN rail (35 mm) or panel mount
- Degree of Protection: IP20 (built-in), IP54 with enclosure
- Operating Temperature: -25°C to +60°C
- Weight: 2,100 g (packaged)
- Country of Origin: France / China (per batch)
Why Engineers Specify This Model
- Integrated motor protection: Combines short-circuit, overload, and phase-loss protection in a single compact device — eliminating the need for a separate thermal relay in many applications.
- High breaking capacity: 50 kA Icu ensures safe operation even in high fault-current industrial environments.
- Adjustable trip current: Fine-tune protection to match motor FLA without replacing the breaker.
- Auxiliary contact compatibility: Accepts add-on auxiliary and alarm contacts for remote monitoring and SCADA integration.
- IEC 60947-2 & IEC 60947-4-1 compliant: Meets global standards for low-voltage switchgear and motor starters.
- Compact DIN-rail footprint: Saves panel space in densely packed control cabinets.
Complete System Bill of Materials
For a complete motor starter assembly using the MT08N1, engineers typically specify:
- MT08N1 — Motor circuit breaker (this unit)
- LC1D09 / LC1D12 — TeSys D contactor (9 A or 12 A coil)
- LRD12 / LRD14 — TeSys overload relay (if separate thermal protection required)
- LA1DN11 — Auxiliary contact block (1NO + 1NC)
- GV2G05 — Handle accessory for door-mounted operation
- NSYTRV42 — Terminal block for control wiring
Compliance & Industry Standards
- IEC 60947-2: Low-voltage switchgear — Circuit breakers
- IEC 60947-4-1: Motor starters and contactors
- CE Marked — European conformity
- UL Listed (select variants) — North American market
- RoHS Compliant — Restriction of hazardous substances
- REACH Compliant — Chemical safety regulation
Quality Assurance & Sourcing
All Schneider Electric products supplied by Konmask.com are sourced through verified distribution channels. Each unit undergoes incoming inspection including:
- Holographic label and QR code authenticity verification
- Packaging integrity check
- Functional trip-test sampling per batch
- Traceability documentation available upon request (batch certificate, test report)
We do not supply grey-market, refurbished, or counterfeit components. All products ship with original manufacturer packaging.
How to Source This Part
- In-stock orders: Add to cart and check out directly — most orders ship within 1–3 business days.
- Bulk / project orders: Contact us for volume pricing, lead time confirmation, and consolidated shipment options.
- OEM / EPC procurement: We support BOM-based sourcing. Send your full bill of materials to support@konmask.com for a consolidated quote.
- Urgent requirements: Call or WhatsApp +0086 19859288691 for expedited sourcing assistance.
Application-Specific FAQ
Q: Can the MT08N1 be used as a main circuit breaker for a control panel?
A: It is designed as a branch motor circuit protector, not a main incomer. For main panel protection, consider the Schneider iC60N or NSX series.
Q: Is the MT08N1 compatible with Schneider TeSys D contactors?
A: Yes. The MT08N1 is designed to coordinate with TeSys D contactors (LC1D series) for Type 2 coordination per IEC 60947-4-1.
Q: What motor power rating does 8 A correspond to?
A: At 400 V AC (3-phase), 8 A corresponds to approximately 4 kW (5.5 HP). At 230 V AC, approximately 2.2 kW (3 HP).
Q: Can I add auxiliary contacts to the MT08N1?
A: Yes. Schneider offers snap-on auxiliary contact blocks (e.g., LA1DN11) compatible with the TeSys motor circuit breaker range.
Q: Do you provide a certificate of conformity?
A: Yes. A certificate of conformity and batch test report can be provided upon request for project and OEM orders.
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