Eaton NZMH2-A125-NA MCCB, NZM2 frame; 85-150 kAIC
Part Number: NZMH2-A125-NA
Quick Summary
The Eaton NZMH2-A125-NA molded case circuit breaker protects distribution panels by interrupting faults quickly and reliably. Design engineers often struggle to balance fast fault clearing with nuisance trips and downtime in mixed motor and drive loads. Certifications such as CE marking, IP ratings, and SIL readiness are critical considerations in industrial protection; verify the exact approvals with Eaton for your region and application. The NZMH2-A125-NA combines an adjustable thermal and magnetic trip with a compact NZM2 frame, delivering reliable performance in panel boards and control cabinets. This device supports scalable protection strategies, enabling safe operation while reducing maintenance costs and simplifying procurement for distributors and OEMs.
Product Information
Extended Description
NZMH2-A125-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMH2, Adjustable thermal, adjustable magnetic trip type, Three-pole, 125A, 690 Vac, 750 Vdc, 85-150 kAIC, Distribution circuit protection
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH2-A125-NA
EAN
4015082692360
Product Length/Depth
7.677 in
Product Height
4.134 in
Product Width
5.866 in
Product Weight
5.48 lb
Compliances
Contact Manufacturer
Amperage Rating
125 A
Voltage rating
690 Vac, 750 Vdc
Trip Type
Adjustable thermal, adjustable magnetic
Circuit breaker type
NZMH2
Frame
NZM2
Class
Distribution circuit protection
Interrupt rating
85-150 kAIC
Number of poles
Three-pole
The NZMH2-A125-NA uses an NZM2 frame to deliver a compact, modular protection solution with a three-pole configuration ideal for distribution circuits. Business impact: streamlined installation in standard panels and minimized space requirements, which translates to lower enclosure costs and faster commissioning in new builds and retrofits. Application: suitable for industrial control panels and machine halls where reliable fault interruption is essential. The adjustable thermal trip provides reliable overload protection aligned to load profiles, while the adjustable magnetic trip improves fast fault clearance for short-circuit events, reducing motor damage and downstream equipment wear. Business impact: improved selectivity and reduced downtime during faults, contributing to lower maintenance costs and higher equipment uptime. Application: suitable for motor starters, drives, and power distribution boards that demand precise protection coordination. The NZMH2-A125-NA’s 125 A rating and 690 Vac / 750 Vdc capability support a wide operating envelope, enabling single-device protection across diverse loads. Business impact: flexibility for multi-modal grids and easier lifecycle management. Application: data centers, manufacturing lines, and process controls. Compatibility and installation advantages include standard NZM2 mounting, compatible terminal connections, and a predictable wiring footprint, which simplify retrofits and spare-part planning. Business impact: faster replacements and improved serviceability. The device’s 85-150 kAIC interrupt rating ensures robust fault clearing in high-energy systems, delivering confidence in protection schemes and compliance with common industry standards. Application: critical protection in distribution feeders and switchgear assemblies. In addressing common objections, the NZMH2-A125-NA offers configurable trip settings to balance protection with system availability, while its lightweight form factor eases handling during on-site installation. Business impact: safer maintenance, reduced field labor, and scalable protection for growing electrical infrastructure. Industry-insider insight: for OEMs and panel builders, this breaker aligns with standard NZM2 enclosures, enabling consistent engineering practices and faster time-to-market.
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FAQs
The NZMH2-A125-NA is designed for direct use within NZM2 frame panels, offering a standard three-pole footprint and mounting compatibility with common distribution boards. It simplifies retrofits and replacements by aligning with established NZM2 enclosure dimensions, terminals, and mounting patterns. When selecting accessories, verify frame size, terminal torque, and clearance to maintain safe, compliant installations.
The adjustable thermal trip provides overload protection by responding to sustained current, while the adjustable magnetic trip sets instantaneous fault response. Together they enable precise coordination with upstream devices and load profiles, minimizing nuisance trips and optimizing selectivity. For critical machinery, document and periodically verify trip settings and coordination to maintain safety and reliability.
This breaker is ideal for distribution circuit protection in industrial panels, machine control cabinets, and panel boards supporting motors and drives. With 125 A rated current, 690 Vac / 750 Vdc capability, and three-pole configuration, it suits commercial and manufacturing environments requiring robust fault clearing and scalable protection across diverse loads and panel architectures.
Key ratings include a 125 A nominal current, 690 Vac and 750 Vdc operating voltage, with adjustable thermal and magnetic trip. It carries an interrupt rating of 85-150 kAIC and uses the NZM2 frame. These specifications support reliable fault clearance, protective coordination, and compliance with common industrial protection schemes in distribution networks.
Plan for proper mounting in NZM2 panels, ensuring mechanical fit, correct mounting hole spacing, and terminal torque per Eaton specifications. Confirm conductor sizing for 125 A, provide adequate heat dissipation clearance, and consider compatible auxiliaries if needed. Also verify regional compliance statuses and ensure you order the exact model to match panel requirements.