Overview
The Eaton FAZ-D6/1-NA-SP is a thermal-magnetic, current-limiting miniature circuit breaker (MCB) designed for branch circuit protection in industrial control and automation applications. This single-pole breaker features a D-curve trip characteristic ideal for circuits with high inrush currents, such as motors, transformers, and power supplies. With a 6-amp rating and 10kA interrupting capacity, it delivers fast short-circuit interruption while minimizing let-through energy that can damage equipment.
Key Features
- D-Curve Thermal-Magnetic Trip — High magnetic trip point (10–20× rated current) prevents nuisance tripping in inductive loads and motor startup applications
- Current Limiting Design — Reduces damaging let-through energy during short circuits, protecting downstream components
- DIN Rail Mounting — Standard 35 mm DIN rail fit for rapid deployment in control panel assemblies; integrates with bus connectors and feeder terminals
- Dual Voltage Rating — Operates on 277/480VAC and 48VDC, suitable for North American industrial and control circuits
- UL 489 Certified — Meets all applicable safety and performance standards for industrial use
- Screw Terminal Connection — Accepts 18–6 AWG wire for flexible circuit integration
Technical Specifications
| Current Rating | 6 A |
| Voltage Rating | 277/480VAC, 48VDC |
| Interrupting Rating (kAIC) | 10 kA |
| Trip Characteristic | D-Curve (10–20× magnetic) |
| Poles | 1 (single-pole) |
| Operating Frequency | 50–60 Hz |
| Mounting Type | DIN Rail (35 mm) |
| Terminal Type | Screw terminals |
| Wire Gauge | 18–6 AWG |
| Operating Temperature Range | −40 to +75 °C |
| Dimensions | 18 mm (W) × 4.13 in (H) × 2.97 in (D) |
| Agency Certification | UL 489 |
| Series | FAZ-NA (Supplementary Protector) |
Typical Applications
- Branch circuit protection in industrial control panels and switchboards
- Feeder and load protection in automation systems with transformer, motor, and power supply loads
- Supplementary protection in low-voltage distribution systems (277V single-phase, 480V three-phase)
- Integrated circuits where high inrush current tolerance is critical
- SWD (Switching Duty) rated for fluorescent lighting control circuits
Compatibility & Replacements
Compatible With
- Standard 35 mm DIN rail systems and enclosures
- Eaton FAZ-NA series bus connectors and feeder terminals for multi-breaker arrays
- North American industrial control panels rated for 277V/480VAC and 48VDC
- Thermal and mechanical interlocks available within the FAZ series
- Any control system requiring UL 489 supplementary protection
Replaces / Drop-In Replacement For
- Eaton FAZ-D6/1-SP (standard terminal version without NA-SP suffix variations)
- Verify compatibility with system integrator before ordering to ensure terminal type and mounting orientation match your application
Works With
- Eaton FAZ-NA-L accessory modules (auxiliary switches, latching mechanisms)
- Industrial automation control software and SCADA systems (breaker provides hardware-level protection independent of software logic)
- EtherNet/IP and PROFINET networked monitoring systems when integrated with Eaton IoT-enabled monitoring modules (sold separately)
- Any enclosure or panel supporting standard DIN rail 35 mm mounting and screw terminal wiring
