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Expulsion Fuses

ECI manufactures a complete product range of expulsion fuses for use in oil-filled distribution transformers.

Terminal Board Fuse

Bushing Fuse

Bayonet Type Fuse

Terminal Board Fuse

  • Arrester Disconnect Switch

    ECI's DSN switches allow electrical testing of transformers equipped with internal under oil lighting arresters.
  • Bushings

    ECI's bushings are for use on pole and padmount oil filled transformers and other oil filled electrical apparatus.
  • Product Accessories

    ECI's product accessories enhance the performance and reliability of transformers.
  • Circuit Breakers

    ECI manufactures internal oil-immersed secondary circuit breakers for use in oil-filled transformers.
  • Breaker Accessories

    ECI's line of accessories facilitate the assembly of circuit breakers into oil-filled transformers.
  • Dry-Well Fuseholders

    ECI's dry-well fuseholders allow the placement of dead front type current limiting fuses in transformers.
  • Arresters

    ECI's lightning arresters were designed for the low voltage side of single or three phase transformers.

Terminal Board & Bushing Mount Expulsion Fuses

ERMCO manufactures a complete product line of expulsion fuses for use in oil filled distribution transformers. Mounting options include installation inside the high voltage pole transformer bushing and installation using a terminal board.

Bayonet Type Expulsion Fuses

ERMCO manufactures a complete product line of expulsion fuses for use in oil filled distribution transformers. Mounting options include installation inside the high voltage pole transformer bushing and installation using a terminal board.

 

Three types of fuse cartridge elements are available:

  • CURRENT “FAULT” SENSING fuse
  • DUAL SENSING fuse
  • DUAL ELEMENT fuse.

The Current “Fault” Sensing Fuse (catalog numbers 9F54MFC—) is sensitive to current only and offers protection to the primary circuit from transformer faults.

 

To avoid closing on a fault an Isolation Link or a current limiting fuse must be used in series with the Bayonet Fuse. The current limiting fuse is required when the available fault current exceeds the interrupting rating of the Bayonet Fuse.

The Dual Sensing Fuse (catalog numbers 9F54LFC—) is sensitive to both current and oil temperature, thus providing both overload and primary circuit protection.

 

To avoid closing on a fault an Isolation Link or a current limiting fuse must be used in series with the Bayonet Fuse. The current limiting fuse is required when the available fault current exceeds the interrupting rating of the Bayonet Fuse.

The Dual Element Fuse (catalog numbers 9F54DFC—) sensing the oil temperature, as well as extreme load currents, secondary faults, and transformer faults. The dual element fuse will reduce the heating time in a transformer caused by overloads and extreme temperature conditions.

 

To avoid closing on a fault an Isolation Link or a current limiting fuse must be used in series with the Bayonet Fuse. The current limiting fuse is required when the available fault current exceeds the interrupting rating of the Bayonet Fuse.