Overview
The Eaton FDB3045L is a Series C F-frame complete molded case circuit breaker designed for fixed thermal and magnetic trip protection. This three-pole unit provides 45A capacity at 600VAC and 250VDC, with 14kAIC interrupting rating at 480VAC and 18kAIC at 240VAC. Built by Eaton (Cutler-Hammer), it delivers proven overcurrent protection for industrial, commercial, and utility-scale applications.
Key Features
- Three-pole thermal magnetic molded case design with fixed trip functions
- Dual voltage rating: 600VAC and 250VDC for versatile applications
- 18kAIC at 240VAC, 14kAIC at 480VAC interrupting capacity
- Load-side mounting configuration with standard line and load terminals
- 50/60 Hz rated for global compatibility
- Long-time and instantaneous trip protection
Technical Specifications
- Manufacturer: Eaton Cutler-Hammer
- Part Number: FDB3045L
- Voltage Rating: 600VAC / 250VDC
- Current Rating: 45 Amperes
- Pole Configuration: 3-Pole (3PH)
- Trip Type: Fixed Thermal, Fixed Magnetic
- Interrupting Capacity (UL): 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC
- Frequency: 50/60 Hz
- Operating Temperature: 40°C ambient rated
- Frame Size: F-Frame (Series C)
- Terminal Style: Line and Load pressure terminals
- Breaker Type: Complete molded case circuit breaker
Typical Applications
The FDB3045L is ideal for motor circuits, distribution panel protection, feeders in industrial plants, and general-purpose overcurrent protection in electrical systems operating at 480VAC or below. It is commonly used in manufacturing facilities, data centers, utility interconnects, and heavy industrial environments requiring standard interrupting capacity.
Compatibility & Replacements
Compatible With
- Eaton Series C F-frame industrial control panels
- Standard molded case circuit breaker enclosures rated 600VAC
- Industrial power distribution systems (480V, 240V, single-phase and three-phase)
- Equipment with line/load side lug terminal requirements
- UL/IEC-compliant electrical installations
Replaces / Drop-In Replacement For
The FDB3045L is a direct replacement for other Eaton Series C 45A, 600VAC FDB-type breakers with identical pole and voltage configurations. For specific replacement scenarios, verify the exact interrupting capacity and trip function requirements of your original unit.
Works With
- Eaton/Cutler-Hammer Series C F-frame panel designs
- Standard thermal-magnetic overcurrent protection circuits
- Fixed trip coordination in tiered distribution schemes
- Load-side feed-through and standard breaker mounting rails
