English
简体中文
News
Get to know our latest news
Eaton NZMH3-AEF300-NA NZM3 Frame Molded Case Circuit Breaker - 3P 300A 690VAC Thermal-Magnetic MCCB
Source: | Author:kongjiang | Published time: 2026-07-15 | 44 Views | 🔊 Click to read aloud ❚❚ ▶ | Share:
Eaton NZMH3-AEF300-NA NZM3 Frame Molded Case Circuit Breaker - 3P 300A 690VAC Thermal-Magnetic MCCB

The NZMH3-AEF300-NA belongs to Eaton’s premium NZM molded case circuit breaker series, a high-performance distribution MCCB built on the NZM3 frame with thermal-magnetic trip technology. Designed for industrial low-voltage power distribution systems, this 3-pole 300A unit delivers reliable overload and short-circuit protection with outstanding short-circuit breaking capacity for heavy-load facilities.


Core Key Specifications

  • Catalog Model: NZMH3-AEF300-NA

  • Frame Size: NZM3

  • Poles: 3 Pole

  • Rated Current: 300 A

  • Rated Voltage: 690 VAC

  • Trip Unit: Thermal-Magnetic

  • Short-circuit release range: 600–3300 A, delayed

  • Interrupt Capacity: 100 kAIC @ 480 Vac, max 150 kAIC

  • Wiring Method: Front screw terminals

  • Physical Size: 6.53 × 6.53 × 5.51 in, Net Weight: 5.5 lb

  • Optional Accessories: Rocker lever, motor drive kits

Series Core Advantages

  1. Ultra-high short-circuit withstand capability up to 100kA@480V, ideal for high-fault industrial power networks.

  2. Precise fixed overload setting (300A) and adjustable delayed short-circuit protection to realize selective coordination.

  3. Compact NZM3 frame structure saves cabinet installation space; simple front screw wiring for fast assembly.

  4. Complete modular accessory support (motor operators, operating handles) for remote & local control upgrades

  5. Global standard compliance for factory automation, commercial power stations, and machinery main distribution panels

Typical Applications

Industrial main distribution switchboards, heavy machinery control centers, factory production lines, commercial building power rooms, transformer secondary protection, renewable energy AC distribution cabinets.

5. H2 Subheadings

H2 NZMH3-AEF300-NA Core Technical Parameters
H2 NZM Series Performance Advantages
H2 Industrial Power Distribution Applications

6. Image Alt Text

Eaton NZMH3-AEF300-NA NZM3 frame 3-pole 300A thermal-magnetic molded case circuit breaker

7. Target SEO Keywords

  1. Eaton NZMH3-AEF300-NA circuit breaker

  2. NZM series NZM3 frame 300A MCCB

  3. 100kA interrupt rating industrial distribution breaker

  4. 3-pole 690VAC thermal-magnetic molded-case breaker

  5. Eaton NZMH high-breaking-capacity power protection device

  6. EATON NZMH3-AEF300-N A MOLDED CASE CIRCUIT BREAKER 3 POLE 300A 600VAC NEW IN BOX

  7. EATON NZMH3-AEF300-N A MOLDED CASE CIRCUIT BREAKER 3 POLE 300A 600VAC NEW IN BOX

  8. EATON CORPORATION EPC37740FDB 2 / EPC37740FDB2 (BRAND NEW)

  9. EATON CORPORATION ETH620 / ETH620 (BRAND NEW)

  10. EATON ECN1834CAG NSNP