Overview
The Edison ECSR150 is a dual-element, time-delay Class RK5 fuse rated for 150 amperes at 600 volts AC. This current-limiting fuse offers superior overload and cycling capabilities, making it one of the most economical and widely used industrial fuses. The ECSR150 is engineered for applications requiring coordinated overcurrent protection without unnecessary fuse openings caused by normal equipment surges.
Key Features
- Dual-Element Design: Minimum industry standard time-delay of 10 seconds at 5 times the fuse rating, allowing sizing closer to running ampacity
- Current-Limiting: 200 kAIC interrupting rating with blade-end connections
- Time-Delay Protection: Accommodates motor inrush and transformer energizing currents while providing fast response to sustained overloads
- Rejection Capability: Prevents misapplication in incompatible fuse holders with integral Class RK5 rejection design
- Economical Solution: Most popular fuses used in the industry and the most economical for most applications, especially motors and transformers
- UL and CSA Listed: UL Listed, Class RK5, Guide JDDZ, File E162363; CSA Certified, C22.2, No. 248.12, Class 1422-02, File 700489
Technical Specifications
- Amperage Rating: 150 A
- Voltage Rating: 600 V AC
- Fuse Class: RK5 (Current-Limiting)
- Element Type: Dual-Element (Time-Delay)
- Response Time: 10 seconds at 500% (5x) rating
- Interrupting Rating: 200 kA RMS Symmetrical
- Terminal Type: Blade End x Blade End
- Physical Dimensions: 1.61 In Diameter, 9.63 In Overall Length
- Weight: 1.22 LB
- Available Short-Circuit Current: Does not exceed 200,000 RMS symmetrical amperes
Typical Applications
Recommended for AC power distribution system mains, feeders and branch circuits having inductive loads (motors, transformers) or non-inductive loads (lighting, heating). The ECSR150 is ideal for:
- Main distribution and feeder circuit protection
- Motor branch circuit protection
- Transformer and inductive load protection
- General-purpose lighting and heating circuits
- Industrial equipment and machinery protection
Compatibility & Replacements
Compatible With
- Standard Class RK5 fuse holders with blade-end configuration
- Industrial power distribution panels rated 600 VAC
- Motor control centers (MCC)
- Transformer protection systems
- Distribution equipment and switchgear rated for RK5 fuses
Replaces / Drop-In Replacement For
- FLSR0150, FLNR-150, FRNR150, FRN-R-150, ECSR-150, 81149, 82149, Cefco CRS-R150, LOS-R150, FRS-R150, FRSR150, HAS-R150, HASR150, Ferraz/Shawmut TRS150, TRS150R and others
Works With
- All standard RK5-rated fuse blocks and holders
- Industrial control systems and equipment rated for 600 VAC Class RK5 protection
- Electrical distribution systems requiring dual-element, time-delay coordination
- Motors, transformers, and general industrial loads up to 150 A
