Overview
The Edison ECSR50 Fusegear is a Class RK5 dual-element, time-delay fuse engineered for industrial power distribution systems. Rated 50A at 600VAC with 200 kAIC interrupting capacity, this current-limiting fuse combines time-delay characteristics with superior overload and cycling capabilities, making it ideal for circuits with inductive loads like motors and transformers.
Key Features
- Dual-element, time-delay design allows sizing closer to running ampacity while maintaining short-circuit protection
- Class RK5 designation with 200 kA interrupting rating at 600 VAC
- 10-second response time at 500% overload, meeting industry standard time-delay minimums
- Non-indicating, rejection-type ferrule terminal cartridge for secure holder mounting
- Tolerates motor surge currents to reduce unnecessary fuse openings and improve system uptime
- Fiberglass body construction for durability and safety
Technical Specifications
Refer to the specifications table below for detailed electrical and physical ratings:
Typical Applications
The Edison ECSR50 is recommended for AC power distribution system mains, feeders, and branch circuits with inductive loads such as motors, motor starters, transformers, and related equipment. The time-delay characteristics allow it to handle normal starting surges while providing maximum overcurrent protection. It is also suitable for non-inductive loads including lighting and heating circuits within the 200 kAIC short-circuit current limit.
Compatibility & Replacements
Compatible With
- Fused disconnect switches rated for Class RK5 fuses
- Motor control centers with 50A fusible slots
- Power distribution panels rated for 600 VAC operation
- Industrial electrical equipment requiring dual-element fuse protection
Replaces / Drop-In Replacement For
Verify with system documentation or consult your distributor for specific model cross-references. The Edison ECSR50 is the current standard designation for this 50A RK5 class fuse in the Eaton Edison/Bussmann lineup.
Works With
- Class RK5 fuse holders and fusible switches rated 50A, 600 VAC
- NEMA-compliant power distribution and motor control equipment
- UL 248-13 (Edison fuse standard) certified systems
