Eaton NZMH2-A20-NA NZM MCCB - UL/CSA & IEC Certified
Part Number: NZMH2-A20-NA
Quick Summary
NZMH2-A20-NA is a molded case circuit breaker for reliable distribution protection in industrial automation. Engineers often struggle with setting precise overcurrent protection and coordinating with motor drives, leading to unexpected downtime. It meets UL/CSA and IEC standards, enabling safe, compliant installations across global facilities. With adjustable thermal and magnetic trip and a 20 A rating for 690 Vac / 750 Vdc systems, this device reduces spare parts, enhances safety, and improves overall equipment reliability. This combination provides robust protection for control panels, drives, and line-side circuits while supporting scalable protection strategies across manufacturing environments.
Product Information
Extended Description
NZMH2-A20-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMH2, Adj. thermal, Adj. magnetic trip, Three-pole, 20A, 750 Vdc, Dist. circuit protection, motor drive, 15-20A, 350-350A delayed, 15-20A, conforms to UL/CSA and IEC
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH2-A20-NA
EAN
4015082692285
Product Length/Depth
4.05 in
Product Height
7.24 in
Product Width
4.13 in
Product Weight
4.1 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Compliances
Contact Manufacturer
Amperage Rating
20 A
Voltage rating
690 Vac, 750 Vdc
Trip Type
Adjustable thermal, adjustable magnetic
Circuit breaker type
NZMH2
Frame
NZM2
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
350-350A delayed
Setting Range Ol Protector
15-20A
Short-circuit breaking capacity
150 kAIC
Interrupt rating
85-150 kAIC
Connection
Front screw
Overload range
15-20A
Number of poles
Three-pole
Eaton Specification Sheet - NZMH2-A20-NA
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The NZMH2-A20-NA uses the NZM2 frame, delivering a compact yet capable three-pole protection solution that fits tight control panels and simplifies wiring. This translates to faster panel assembly, reduced space requirements, and lower installation costs, especially in high-density switchgear and drive applications. Application: Ideal for distribution circuits in manufacturing lines and process controls where space is at a premium and reliability is non-negotiable. Feature → Business Impact → Application: Adjustable thermal and magnetic trip enables precise overcurrent coordination, minimizing nuisance trips and enabling safe startup of motor drives. Application: Motor drive protection in conveyors, pumps, and line-start equipment, reducing downtime and extending motor life. Feature → Business Impact → Application: Front screw connections and available accessories like a rocker lever and motor drive option streamline commissioning and maintenance. Application: Fast field servicing, simple retrofits, and quick replacement during capital upgrades. Feature → Business Impact → Application: 150 kAIC short-circuit breaking capacity with 85-150 kAIC interrupt rating provides strong fault handling for demanding industrial environments. Application: Heavy electrical distribution panels where fault currents can peak, such as metal fabrication or packaging lines. Feature → Business Impact → Application: NZM2 frame compatibility ensures consistent parts availability and streamlined procurement. Application: Global facilities with standardized protection platforms and cross-site maintenance programs. Feature → Business Impact → Application: Compliances with UL/CSA and IEC standards support cross-border installation and supplier audits. Application: Global plants needing certified, traceable protection solutions.
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FAQs
For straightforward installation, use the front screw connections and plan for three-pole mounting in NZM2 frame enclosures. The unit supports motor-drive protection and accommodates rocker lever accessories, enabling quick manual operation and safe testing without panel removal. Ensure clearance for torque and heat dissipation in dense panel layouts.
The device provides a 20 A amperage rating, voltage ratings of 690 Vac and 750 Vdc, and a trip type of adjustable thermal and adjustable magnetic. It offers a short-circuit breaking capacity of 150 kAIC and an interrupt rating of 85-150 kAIC, with front connection points for easy wiring and a three-pole configuration suitable for distribution protection.
Yes. The breaker is designed to meet UL/CSA and IEC standards, supporting safe installation and compliance across global facilities. Always verify latest datasheets and local endorsements, especially for mission-critical machinery or regulated industries, to ensure alignment with your site requirements.
Its adjustable thermal and magnetic trip allows precise coordination with motor drive protection schemes, reducing nuisance trips during startup and transient events. The unit’s 20 A rating, combined with a robust short-circuit capacity and front-access installation, makes it ideal for protecting drives, conveyors, pumps, and other motor-driven equipment in automation lines.
Eaton provides a one-year warranty from installation or 18 months from shipment, whichever occurs first, per Selling Policy 25-000. For service, rely on Eaton’s distributor support network and documented maintenance guidance to maximize uptime and optimize lifecycle costs.