• Motor Fuse Links comply with IEC 60282-1, IEC 644 and BS 5907.
• Available in DIN 43625 and BS 2692 dimensions.
• Sold in a wide range of ratings from :
  3.6kV – 5 to 450A,
  7.2kV – 5 to 355A.
• North American dimensioned products also available, 2R to 24R ratings.

COOPER BUSSMANN MOTOR FUSE LINKS

Cooper Bussmann range of motor fuse links are designed to meet the specific requirements necessary for motor protection. During the starting cycle of direct on-line motors, the fuse elements will reach a considerably higher temperature than during normal operation; this is due to the high amount of current the motor will draw as it starts, typically, 6 times its normal load current value. This results in expansion and contraction of the fuse elements and could cause premature operation of the fuse link. Cooper Bussmann motor fuse links encompass an advanced design to minimise this effect. This therefore, negates the need to over specify the fuse rating due to high values of motor starting current.

Cooper Bussmann fuse links operate extremely quickly under heavy fault currents, resulting from the time-current characteristic. Low power dissipation ensures low temperature rise, important in multi-tier starters for example. Switching (Arc) voltages are lower than permitted values, therefore, 5.5kV fuse links are also suitable for 4.8kV and 2.4kV circuits.

APPLICATION

Fuse links provide short-circuit protection in motor circuits to both the motor starter and cables from the starter to the motor. Overload protection is provided by the motor starter, generally by an overload relay and contactor. Combination striker tripping may also form part of the associated equipment which houses the fuse links and motor starters.

• Fuse Links comply with IEC 60282-1, BS 2692-1 and ESI standard 12-8.
• 7.2 and 12kV Fuse links tested at highest system voltage and approved by the UK Electricity Association approvals panel.
• Voltage ranges from 3.6 to 24kV.
• Fitted with powerful pyrotechnic striker pin.

COOPER BUSSMANN UNDER OIL FUSE LINKS

Cooper Bussmann range of oil tight fuse links are designed for use in oil filled switchgear. This type was pioneered in the UK. Cooper Bussmann range has been in continuous manufacture for almost 40 years, being by far the most widely used device of its kind in the world. Over 1,000,000 Cooper Bussmann branded fuse links have been put into service without a single reported case of oil ingress. A unique triple seal system ensures against long term seal deterioration. Low power dissipation ensures long running in oil filled switchgear.

APPLICATION

Oil medium voltage fuse links are suitable for primary side transformer protection and oil filled switch combination unit. The range is not suitable for use inside oil filled transformer tanks where high oil temperatures may be expected.

• E-Rated DIN Fuse Links.
• E-Rated Fuse Links for Transformers and Feeder Protection.
• E-Rated Fuse Links for Potential and Small Power Transformers.
• CL-14 and Bolt-In.
• R-Rated Fuse Links for Motor Circuit Protection.

• VT Fuse Clips for 25.4mm diameter.
• DIN standard Clips for ‘F’ and ‘T’ range fuse links.
• BS Mounting Clips suitable for 50.8mm and 76.2mm Oil, Air, and Motor Fuse Links up to 200A.

COOPER BUSSMANN FUSE CLIPS

To complement the range of tag fixings offered by Cooper Bussmann, a range of fuse clips are available. These are suitable for use with British Standard, DIN dimensioned and VT ferrule style fuse links. The BS and DIN clips are rated up to 200 Amps. They are designed to be fitted onto insulated studs or directly onto a busbar.

• Wide range of options available from 15kV to 72kV in ANSI T & K characteristics.
• Extra rapid option also available.

COOPER BUSSMANN EXPULSION FUSE LINKS

Cooper Bussmann expulsion fuse links have been widely used throughout the world for over 40 years. They have in that time built up a formidable reputation and consistency of performance.

Cooper Bussmann expulsion fuse links are designed to be interchangeable with other types of manufacturers cut-out units andare available in several patterns.

APPLICATION

Expulsion fuse links current ratings should be selected on the basis of maximum expected transient no damage currents rather than on full load current. In addition, the selection of higher current ratings will reduce the possibility of supply interruption due to transient surges such as those due to lightning strikes.

• Low cost retrofit option for spur line isolation in place of existing expulsion fuse links.
• Available for up to 33kV lines.
• Standard pick-up current ratings of 20, 25, 40, 50,63, 100 Amps.
• Other ratings up to 320 Amps available.
• Available in single or 3-phase ganged arrangements.
• Enhanced lightning immunity performance.

COOPER BUSSMANN AUTOMATIC SECTIONALISING LINK ASL (SMART LINKS)

Cooper Bussmann low cost retrofit Automatic Sectionalising Link (ASL), represents a significant breakthrough in the field of high voltage overhead line distribution system protection. It is a completely self-contained device designed for use with multi-shot circuit breakers or auto-reclosers. The ASL was originally developed by Cooper Bussmann from invention by the Electrical Council Research Centre, now EA technology in the UK.