Overview
The Eaton NZMH2-AF20-NA is a NZM2-frame molded case circuit breaker rated for 20A at 690 Vac / 750 Vdc. This three-pole breaker features a thermomagnetic release with switching capacity of 150 kA at 480Y/277V and 65 kA at 600Y/347V (SCCR). With its thermo-magnetic release system, it ensures optimal protection against overloads and short-circuits, making it suitable for distribution and branch circuit applications in industrial and commercial settings.
Key Features
- Fixed Magnetic Trip: Permanently set short-circuit release for consistent, predictable protection
- Three-Pole Configuration: Covers all three phases in balanced electrical systems
- Compact NZM2 Frame: Space-efficient design for cabinet and panel mounting
- High Short-Circuit Rating: 150 kA at 480V/60Hz, 65 kA at 600V/60Hz
- Screw Connection Terminals: Reliable front-mounted electrical connections
- UL/CSA and IEC Certified: Compliant with UL 489, CSA-C22.2 No. 5-09, and IEC/EN 60947
Technical Specifications
The NZMH2-AF20-NA combines proven Eaton engineering with robust protection capabilities:
Typical Applications
This breaker is designed for branch circuits, feeder circuits, and use in unearthed supply systems at 690V. It provides both system and cable protection in:
- Industrial control centers and motor control centers
- Commercial distribution panels
- Machinery and equipment branch circuits
- Feeder protection in three-phase installations
- European electrical installations with North American compatibility
Compatibility & Replacements
Compatible With
- Standard three-phase electrical distribution systems (690 Vac / 750 Vdc)
- Industrial control panels and switchgear
- Molded case circuit breaker enclosures with NZM2 frame slots
- North American and European electrical standards (UL/CSA and IEC)
Replaces / Drop-In Replacement For
- Other Eaton NZMH2 20A molded case breakers with matching voltage and terminal type
- Equivalent fixed-trip NZM2-frame three-pole 20A devices from Eaton Moeller
- Verify compatibility with your system integrator before ordering
Works With
- Screw terminal electrical connections (standard front-mount)
- Typical thermal and magnetic coordination curves for feeder protection
- Motor drive and rocker lever accessories (optional add-ons)
- IEC 60947-2 and UL 489 control circuit designs
