Schneider MT06N1 Air Circuit Breaker – Obsolete MT Series Spare Part

Technical Dossier

Product Details And Specifications

Schneider MT06N1 Air Circuit Breaker – Obsolete MT Series Spare Part

When a Schneider MT06N1 circuit breaker fails on an aging production line, the consequences extend far beyond a single component. The MT Series has been officially discontinued by Schneider Electric, replaced by the iC60 range — a product line that is not a direct drop-in replacement and requires panel re-engineering, updated wiring schematics, and in many cases, full cabinet redesign. For a mid-scale manufacturing facility, that engineering overhaul carries a price tag that routinely exceeds $200,000 USD, before accounting for production downtime, which in continuous-process industries can run $50,000–$150,000 per day.

DriveKNMS maintains verified physical stock of the MT06N1. This is not a catalog listing. If it appears here, it is because we have assessed and confirmed availability. For plant managers and maintenance engineers operating legacy electrical infrastructure, this is a direct path to avoiding a forced capital expenditure cycle.

Technical Specifications

Note: Electrical parameters such as rated current, breaking capacity, and pole configuration are model-specific. Contact us with your original panel documentation for cross-verification before ordering.

Solving the Discontinued Hardware Crisis

The MT Series was a workhorse of industrial electrical panels throughout the 1990s and 2000s, widely deployed in Schneider-integrated automation systems, Telemecanique motor control centers, and legacy Merlin Gerin distribution boards. These panels remain operational in food processing plants, water treatment facilities, chemical production lines, and discrete manufacturing environments across Asia, Europe, and the Americas.

The core problem with discontinuation is not the part itself — it is the system dependency. A single MT06N1 may protect a 400V feeder circuit that powers a PLC rack, a servo drive cluster, or a critical HVAC loop. When that breaker trips and cannot be reset, or when it fails to trip under fault conditions due to aging mechanisms, the downstream risk is not just equipment damage — it is safety exposure and regulatory liability.

Sourcing an original MT06N1 eliminates the need to re-engineer the protection coordination study, re-certify the panel, or retrain maintenance staff on a new product family. For facilities operating under ISO 9001 or IEC 60364 compliance frameworks, maintaining original component specifications is not a preference — it is a documentation requirement.

Extending the operational life of an MT-Series-equipped panel by 5 to 10 years through strategic spare part procurement is a defensible capital allocation decision. The cost of one MT06N1 unit is a fraction of one day of unplanned downtime. Plant managers who build a buffer stock of two to four units per critical circuit position themselves to absorb component failures without triggering emergency procurement at inflated spot-market prices.

Condition & Reliability Assurance

All MT06N1 units sourced through DriveKNMS undergo a structured 5-step assessment protocol before dispatch:

1. Electrolytic Capacitor Aging Check: Internal timing and trip mechanism components are inspected for capacitor degradation, which is the primary failure mode in aged circuit protection devices stored beyond 10 years.
2. Mechanical Trip Mechanism Verification: Each unit is manually cycled through its full trip-and-reset sequence to confirm spring tension, latch engagement, and handle travel are within original specification.
3. Contact Resistance Measurement: Main contact resistance is measured to detect erosion or oxidation that would compromise current-carrying capacity under load.
4. Terminal Pin and Busbar Corrosion Inspection: All connection points are examined under magnification for corrosion, tin whisker formation, or mechanical deformation that would affect installation torque and contact integrity.
5. Firmware / Calibration Traceability (where applicable): For electronic trip units, firmware version and calibration date stamps are recorded and disclosed to the buyer prior to shipment.

Condition grade (New, Refurbished-Grade-A, or Tested-Used) is disclosed in writing with each order. No unit is shipped without a condition report.

Key Features for System Maintenance

• Drop-in replacement: The MT06N1 installs directly into existing DIN rail or panel mount positions without modification to the enclosure or wiring.
• No reprogramming required: Unlike successor product families, the MT06N1 requires no parameter configuration, communication setup, or software commissioning.
• Protection coordination preserved: Using the original part number maintains the existing selectivity study and avoids the cost of a new coordination analysis by a qualified electrical engineer.
• Avoids engineering reconstruction costs: Substituting a non-equivalent breaker in a certified panel can void the panel's type-test certification. The MT06N1 preserves the original certification basis.
• Immediate operational continuity: For facilities where production cannot be halted for panel re-engineering, the MT06N1 is the only path to same-configuration restoration.

FAQ

Q: What warranty applies to an obsolete part like the MT06N1?
A: DriveKNMS provides a 90-day functional warranty on all tested and refurbished units, and a 30-day warranty on tested-used units. New old stock (NOS) units carry a 180-day warranty. Warranty terms are confirmed in writing at the time of order.

Q: How do I know the unit is genuine and not counterfeit?
A: All units are sourced from documented industrial decommissioning projects, authorized distributor closeout stock, or verified OEM surplus channels. We do not source from unverified secondary markets. Schneider Electric part markings, date codes, and factory labels are inspected and photographed as part of the intake process. Buyers receive photographic documentation upon request.

Q: Should I buy more than one unit?
A: For any circuit position where the MT06N1 is the sole protection device for a critical load, maintaining a minimum of two spare units is standard practice. Given that this series is discontinued and secondary market availability is finite and declining, procurement of a 2–4 unit buffer stock is a low-cost insurance policy against future sourcing failure. We recommend assessing all MT-Series positions in your facility and consolidating a single procurement order to reduce per-unit cost and shipping overhead.

Q: Can you source other MT Series variants?
A: Yes. DriveKNMS actively sources the full MT Series range. Contact us with your specific part numbers and required quantities.