Eaton NZMN1-A20-NA Molded Case Circuit Breaker - UL Listed
Part Number: NZMN1-A20-NA
Quick Summary
NZMN1-A20-NA molded case circuit breaker protects industrial distribution panels in automation environments. Engineers frequently face nuisance trips and inconsistent fault-current handling, which disrupt production and increase maintenance costs. This device combines a thermal-magnetic trip with a 50 kAIC rating to minimize outages and equipment damage. UL Listed certification with IEC/CSA compatibility ensures reliable performance across global installations. Front-frame clamp mounting and a 15–20 A setting range streamline panel wiring and configuration. Using this MCCB delivers enhanced safety, predictable protection, and reduced downtime, supporting regulatory compliance and longer equipment life in modern manufacturing and process facilities.
Product Information
Extended Description
NZMN1-A20-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMN1, Thermal-magnetic trip, 350A trip rating, Three-pole, 20A, 500 Vdc, 50 kAIC, Dist. circuit protection, 15-20A, Front frame clamp, 15-20A, conforms to UL/CSA and IEC
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN1-A20-NA
EAN
4015082815707
Product Length/Depth
2.68 in
Product Height
3.75 in
Product Width
3.54 in
Product Weight
2.54 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
Certifications
UL Listed
Amperage Rating
20 A
Voltage rating
690 Vac, 500 Vdc
Trip Type
T268
Circuit breaker type
NZMN1
Frame
NZM1
Class
Distribution circuit protection
Accessories
Rocker lever
Setting Range Ol Protector
15-20A
Short-circuit breaking capacity
50 kAIC
Interrupt rating
50 kAIC
Connection
Front frame clamp
Overload range
15-20A
Number of poles
Three-pole
Trip rating
350 A
Feature: Amperage rating of 20 A provides precise protection for common automation circuits. Business impact: Reduces nuisance trips while safeguarding transformers, controllers, and sensors. Application: Suitable for distribution circuits in machine control panels. The NZMN1-A20-NA enables predictable coordination with downstream devices, improving system reliability. Feature: Voltage rating of 690 Vac / 500 Vdc expands applicability to both AC and DC control circuits. Business impact: Enables cross-application use within mixed-voltage automation environments, reducing part variety and inventory. Application: Machine tools and panel boards with AC and DC feeds can share a common protection strategy. Feature: Thermal-magnetic trip (T268) delivers fast fault clearance and coordination with upstream breakers. Business impact: Limits arc energy and minimizes downtime, improving safety margins in high-duty industrial lines. Application: Critical loads in conveyors and robotics cells. Feature: Short-circuit breaking capacity of 50 kAIC supports robust fault handling. Business impact: Enhances safety and prevents upstream equipment damage during faults. Application: Suitable for medium- to high-energy distribution sections in panels. Feature: Front frame clamp connection simplifies installation and serviceability. Business impact: Reduces wiring complexity and panel space requirements, speeding commissioning. Application: Fielded in retrofit projects and new builds with compact control enclosures. Feature: Three-pole design provides true three-phase protection. Business impact: Ensures balanced protection of 3-phase motors and drives, improving performance and longevity. Application: Industrial automation lines and process equipment. Feature: Setting range 15–20 A with rocker lever accessorization. Business impact: Facilitates field-adjustment to match circuit load profiles, improving protection accuracy. Application: Control panels with varying loads and frequent reconfiguration. Feature: UL Listed certification with IEC/CSA alignment. Business impact: Compliance confidence across North American and international installations, easing procurement and audits. Application: Global plant networks and multi-site deployments.
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FAQs
NZMN1-A20-NA uses a front frame clamp connection for straightforward, secure mounting in most standard distribution panels. Its three-pole design matches common three-phase control circuits, enabling quick integration with existing wiring schemes. The compact footprint supports tight panel spaces, and the 15–20 A setting range allows field adjustments to suit evolving load profiles without swapping devices.
The device is rated for 20 A with a voltage rating of 690 Vac / 500 Vdc and a short-circuit current rating of 50 kAIC. It employs a thermal-magnetic trip (T268) to provide precise overload and fault protection. These characteristics support reliable operation in mixed-volt environments and help prevent cascading failures in distribution circuits.
Yes. With three-pole construction, 690 Vac / 500 Vdc capability, and a 50 kAIC breaking capacity, the NZMN1-A20-NA is well-suited for protecting three-phase motors, drives, and automation equipment. It enables coordinated protection across all phases, improving motor longevity and reducing unplanned downtime in manufacturing lines.
The device is UL Listed and designed to align with IEC standards, with apparent CSA compatibility in practice. This combination supports global deployment, simplifies regulatory compliance, and provides assurance during audits for safety, electrical protection, and performance criteria in industrial facilities.
By reducing nuisance trips and improving fault clearing times, the NZMN1-A20-NA lowers downtime costs and extends equipment life. Its front-frame mounting and field-adjustable 15–20 A setting simplify maintenance, enabling quicker reconfiguration as loads change. Combined with UL-listed reliability, this MCCB helps optimize total cost of ownership in automation investments.