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Home Industrial ControlMedium and Low Voltage Power DistributionAir Circuit BreakersFrame Breaker Accessories

Schneider MT-N frame circuit breaker accessories

Brand:
Schneider
Series:
MT
Attachment Type:
Padlock Accessories
Attachment Name:
Profalux Key Lock
Model:
MT-N type OFF P lock 1 lock + 1 lock with key + bracket
Order Number:
P047520
Description:
Schneider MT-N type OFF P lock 1 lock + 1 lock with key + bracket, Profalux key lock, padlock accessories, 2 locks 1 key (N type contains 2 lock brackets, H type contains 1 lock bracket)
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Series Overview

​Isolating Switches​​

● Products labeled ​​"/MS"​​ are isolating switches compliant with ​​IEC 60947-3​​. Derived from corresponding circuit breakers, they share ​​identical dimensions and accessories​​ but lack a ​​protection trip unit​​.

● In the open position, isolating switches ensure ​​sufficient isolation distance​​ between main contacts, guaranteeing the downstream system remains de-energized.
● When paired with an ​​external protection relay (max delay: 500ms)​​, the breaking capacity (at ​​max rated voltage Ue​​) matches the ​​rated short-time withstand current (Icw) for 1s​​.
● For ​​1150V applications​​, switches are labeled ​​"/E" and "/MS"​​, retaining standard breaker dimensions and accessories.

​​Leakage Protection Current Transformers​​

● ​​Rectangular CTs​​ for residual current detection:

  • Installed around busbars (phase + neutral). Two sizes available:
    • ​​MT N1​​: 280x115mm (630A–1600A).
    • ​​MT N2/H/L​​: 470x160mm (800A–3200A).
● ​​External CTs​​ for ground fault protection:
  • Installed between transformer neutral and ground. Connected to ​​Micrologic 6.0​​ via ​​MDGF module​​.

​​Voltage Measurement Inputs​​

● Required for ​​Micrologic D/P/H​​ power measurement and ​​Micrologic 7.0​​ leakage protection.

● Standard: Internal voltage sampling from breaker lower terminals (​​100–690V AC​​).
● Optional: Replace internal sampling with ​​external PTE input​​ (includes ​​3m cable​​).

​​High Breaking/Making Capacity​​

● ​​4-breakpoint contact system​​ divides arcing energy, reducing wear and enhancing ​​AC-23B performance (690V)​​.

​​Long-Time Delay Module​​

● ​​4-roller contact system​​ creates ​​4 parallel current paths​​, reducing electrodynamic repulsion to ​​1/4​​. Self-reinforcing contact pressure prevents bounce/welding.

​​External Power Supply Module​​

● Maintains display during power loss.

  • ​​Input​​: 110/130, 200/240, 380/415V AC (±10–15%) or 24/30, 48/60, 100/125V DC (±20%).
  • ​​Output​​: 24V DC ±5% (1A, ripple <1%).
  • ​​Insulation​​: 3kV RMS/1min.

​​Battery Module​​

● Maintains display and communication during power loss.

  • ​​Runtime​​: ~4 hours.
  • Mounts vertically or on DIN rail.

​​Test Equipment​​

● ​​Handheld Tester​​:

  • Simulates faults; checks tripping/contact opening. Powered by ​​AA batteries​​.
● ​​Full-Function Test Kit​​:
  • Validates mechanical/electrical functions, protection settings, ZSI, and thermal memory. PC-connected mode compares trip curves and generates reports.

​​Connection Accessories​​

● ​​Vertical Adapters​​: Enable vertical busbar connections.

● ​​Cable Lug Adapters​​: Secure multiple lugs; requires ​​spacer rods (P/N 07251)​​.
● ​​Phase Barriers​​: Enhance insulation between busbars (required for >500V on MT N1).
● ​​Terminal Extenders​​: Increase busbar spacing in fixed installations.
● ​​Arc Chutes​​: Ensure safety margins for MT N1 front/vertical connections.
● ​​Removable Front Adapters​​: Allow quick front-end disassembly.

​​Safety Components​​

● ​​Safety Shutters​​:

  • Protect live parts when breaker is withdrawn. Includes lockable sliders (locks not included).
  • Standard in draw-out breakers.
● ​​Position Indicators & Locks​​:
  • Display shutter status; accept 1–3 padlocks.
● ​​Button Locks​​:
  • Prevent accidental operation. Options: padlocks, seals, or screws.
● ​​OFF Position Lock​​:
  • Locks via ​​padlocks (1–3)​​ or ​​Profalux/Ronis key locks​​.

​​Interlocks​​

● ​​Door Interlocks​​:

  • Prevent door opening when breaker is closed (IP20 compliance).
● ​​Racking Interlocks​​:
  • Require pressing "OFF" to insert/remove handles.
● ​​Spring Discharge​​: Releases energy before breaker removal.
● ​​Mismatch Protection​​: Ensures compatibility between draw-out frames and breakers (20 combinations).

​​Auxiliary Components​​

● ​​Terminal Covers (CB)​​: Shield secondary terminals.

● ​​Operation Counter (CDM)​​: Tracks manual/electrical operations.
● ​​Door Frames (CDP)​​: Achieve ​​IP40​​ (fixed/draw-out).
● ​​Transparent Covers (CP)​​: Upgrade to ​​IP54, IK10​​ (draw-out only).

​​Power Transfer Systems​​

● ​​Manual Transfer​​:

  • Uses mechanical linkages or cables (2–3 devices).
● ​​Remote-Controlled Transfer​​:
  • Electrically operated with interlock logic (prevents manual errors).
● ​​Automatic Transfer​​:
  • Integrates controllers for energy management, emergency switching, and grid communication.

​​Communication​​

● ​​eco COM Module​​: Transmits data/status (excludes trip/close commands). Ideal for power transfer systems.

Rachel

Industrial Control Sales Specialist: Focuses on delivering high-performance, cost-effective industrial control products. Offers end-to-end one-stop procurement support—covering rapid quotation, streamlined order fulfillment, and responsive after-sales service—to simplify clients’ procurement processes. Email: Anthony@icxsg.com

We offer competitive product pricing. For fast support, send your email, phone, address, and the product model & quantity you want—we’ll reach out quickly!

We typically respond via email within one business day! You can also contact us at Anthony@icxsg.com

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