Short-Circuit Withstand & Dynamic Thermal Stability
The NZMH2-A125 high breaking capacity circuit breaker is engineered for harsh working conditions. It can not only cut off short-circuit faults instantly, but also withstand intense thermal and electrodynamic shocks right before fault clearance, delivering consistent and reliable protection throughout the entire fault cycle.
Short-Time Withstand Current (Icw)
The NZMH2-A125 has a solid Icw rating - it holds up perfectly through the fault. It also works great in selective coordination setups, staying online while downstream breakers clear the problem first.
Peak Withstand Current (Ipk)
The NZMH2 series uses a reinforced internal structure and contact system to absorb that high peak impact, so the trip mechanism always works as it should.
Product Features of NZMH2-A125
● Industrial-grade design to withstand harsh factory conditions with heavy loads and frequent startup-shutdown cycles.
● Rated current of 125A, covering power demands for medium and large distribution circuits.
● Robust high breaking capacity safely cuts off power rapidly during short-circuit surges for enhanced system safety.
● Equipped with built-in thermal-magnetic trip unit to provide integrated overload and short-circuit dual protection.
● Optimized for long service life, ideal for continuous operation and lowering maintenance costs.
Eaton NZMH2-A125 Technical Specifications
● Model:Eaton NZMH2-A125
● Rated Current: 125A
● Rated Operational Voltage: Up to 690V AC (standard industrial grade)
● Trip Type: Thermal-magnetic trip
● Breaking Capacity: Industrial high breaking capacity
● Mounting Type: Fixed mounting
● Application: AC power distribution and motor protection
Application Scenarios of NZMH2-A125
The NZMH2-A125 is designed for 125A three-phase distribution circuit protection and fits most common industrial applications:
● Main circuit protection for factory motor control centers (MCC)
● Main power switch for automated production lines, packaging and conveying machinery
● Circuit protection for photovoltaic and new energy supporting equipment
● Replacement circuit breaker for old cabinet upgrades and engineering renovation projects
Comparison with ordinary circuit breakers
Improve efficiency
● Higher short-circuit withstand capacity and superior breaking performance.
● Perfect for continuous heavy-load operating conditions in factories.
● Standard unified specifications for easier maintenance and component replacement.
Aftersales Support
Quantity available: In stock.
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Warranty: 12 months.
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Lead time: Shipment within 3-5 working days.
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Terms of payment: T/T. RMB (CNY) support.
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Courier partners: FedEx, DHL, UPS, TNT, EMS, SF express.
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FAQ
Q1: What do H2 and A in the model number stand for?
A1: H refers to Class H high breaking capacity; the digit 2 indicates it belongs to the NZM2 frame size. A stands for thermal-magnetic trip unit for distribution protection, whose characteristic curve is specially optimized for distribution circuits.
Q2: Can this breaker be used directly for motor protection?
A2: This model features a trip curve dedicated to power distribution. It is not recommended for the main circuit of frequently started motors. For motor protection, the Type M motor-specific breaker of the same frame is a better choice, which can withstand motor inrush current and avoid nuisance tripping during startup.
Q3: What is the difference between fixed and plug-in circuit breakers?
A3: Fixed breakers are mounted directly with screws, featuring lower cost and firm wiring, ideal for permanently installed distribution cabinets. Plug-in breakers come with plug-on bases, allowing breaker replacement without disconnecting cables for faster maintenance, suitable for scenarios requiring frequent inspection and quick replacement.
Q4: How can I place an order or apply for bulk purchase discounts?
A4: Send your required order quantity via email to Irene8866@163.com, or leave us a message on WhatsApp (+86 18950163907). We will reply within 24 hours with formal quotation and stock confirmation.
For more product information, please contact our professional sales team to obtain the latest pricing and stock information for the Eaton NZMH2-A125!
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