MERSEN (FERRAZ SHAWMUT)

Mersen fuses - Hot Spot fusesMersen was founded several years ago by combining the domestic company Gould Shawmut with the lead European fuse company Carbone Lorraine Ferraz. Mersen fuses now has the best international array of fuses with the technical superiority of the American leader.

 

Mersen Fuses Offering No-Damage Circuit Protection

Mersen arc flash fuses are type-2 no-damage circuit protection and are available in four classes: Class CC, Class J, Class RK1, and Class L. Opening in less than quarter cycles under short circuit conditions, Mersen fuses limit enough current to prevent down time and arc flash damage. Their current-limiting ability is among industries highest allowed levels for motor starting and transformer in rush current without nuisance opening. Smart Spot open fuse indicator was added to the line. When the Mersen fuse opens, Smart Spot immediately surges it and turns from silver to red. The Spot remains red to facilitate proper capable out.

 

Mersen fuses come in a full line of midget, miniature and PC mount fuses. Mersen’s complete power fuse offering covers a wide range of applications and a complete range of circuit protectors. AMP-TRAP power fuses, TRI-ONIC time delay and the ONE-TIME fuse line Class J: AJT, A4J, HSJ; Class L: A4BQ, A4BY, A4BT; Class CC: ATDR, ATQR, ATMR; Class RK1: A2K, A6K, A2D, A6D; Class T: A3T, A6T; Class RK5: TR, TRS; Class K: OT, OTS.

Product Image
Catalog #
Description
Price
A3T70
70A 300V FAST T
$45.28
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A3T80
80A 300V FAST T
$49.95
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Mersen A480R12R-1
A480R12R-1
12E 4.8KV MED VOLT Mersen R-Rated fuses are current-limiting, high interrupting rating fuses intended for the short circuit protection of medium voltage motors and motor controllers. R-Rated fuses are back-up fuses that have a minimum interrupting rating, and must be coordinated with overload relays in combination motor starters. The motor starter manufacturer generally specifies the R-Rated fuse size. These fuses come with a 3 (size D) or 4 (size E) inch diameter barrels with ferrules and are mounted in spring reinforced clips
  • The Amp-Trap and 9F60 R-Rated fuses are UL Recognized
  • Ferrule mounting for standard clips and interchangeability with other brands of fuses
  • Current-limiting for superior equipment protection
  • Metal embossed catalog number and manufacturing date for lasting identification
  • Hookeye for non load-break isolation by hookstick:
  • On the 4.8kV an optional hookeye mounted in the factory is available
  • On all other 3" barrels if a hookeye is required, use the operating eye 9F61AAW612
  • Blown-fuse indicator to give positive identification of open fuse
  • Amp trap: 3" Barrel 2 lb tripped force - 0.50 Inch
  • 9F60: 0.125 lb tripped force – 0.20 Inch
$1,649.69
Buy Now
Mersen A480R18R-1
A480R18R-1
18E 4.8KV MEDIUM VOLTAGE Mersen R-Rated fuses are current-limiting, high interrupting rating fuses intended for the short circuit protection of medium voltage motors and motor controllers. R-Rated fuses are back-up fuses that have a minimum interrupting rating, and must be coordinated with overload relays in combination motor starters. The motor starter manufacturer generally specifies the R-Rated fuse size. These fuses come with a 3 (size D) or 4 (size E) inch diameter barrels with ferrules and are mounted in spring reinforced clips
  • The Amp-Trap and 9F60 R-Rated fuses are UL Recognized
  • Ferrule mounting for standard clips and interchangeability with other brands of fuses
  • Current-limiting for superior equipment protection
  • Metal embossed catalog number and manufacturing date for lasting identification
  • Hookeye for non load-break isolation by hookstick:
  • On the 4.8kV an optional hookeye mounted in the factory is available
  • On all other 3" barrels if a hookeye is required, use the operating eye 9F61AAW612
  • Blown-fuse indicator to give positive identification of open fuse
  • Amp trap: 3" Barrel 2 lb tripped force - 0.50 Inch
  • 9F60: 0.125 lb tripped force – 0.20 Inch
$2,743.93
Buy Now
Mersen A480R24R-1
A480R24R-1
24E 4.8KV MEDIUM VOLTAGE Mersen R-Rated fuses are current-limiting, high interrupting rating fuses intended for the short circuit protection of medium voltage motors and motor controllers. R-Rated fuses are back-up fuses that have a minimum interrupting rating, and must be coordinated with overload relays in combination motor starters. The motor starter manufacturer generally specifies the R-Rated fuse size. These fuses come with a 3 (size D) or 4 (size E) inch diameter barrels with ferrules and are mounted in spring reinforced clips.
  • The Amp-Trap and 9F60 R-Rated fuses are UL Recognized
  • Ferrule mounting for standard clips and interchangeability with other brands of fuses
  • Current-limiting for superior equipment protection
  • Metal embossed catalog number and manufacturing date for lasting identification
  • Hookeye for non load-break isolation by hookstick:
  • On the 4.8kV an optional hookeye mounted in the factory is available
  • On all other 3" barrels if a hookeye is required, use the operating eye 9F61AAW612
  • Blown-fuse indicator to give positive identification of open fuse
  • Amp trap: 3" Barrel 2 lb tripped force - 0.50 Inch
  • 9F60: 0.125 lb tripped force – 0.20 Inch
$2,743.93
Buy Now
Mersen A480R24R-1HE
A480R24R-1HE
24E 4.8KV W/HOOK EYE Mersen R-Rated fuses are current-limiting, high interrupting rating fuses intended for the short circuit protection of medium voltage motors and motor controllers. R-Rated fuses are back-up fuses that have a minimum interrupting rating, and must be coordinated with overload relays in combination motor starters. The motor starter manufacturer generally specifies the R-Rated fuse size. These fuses come with a 3 (size D) or 4 (size E) inch diameter barrels with ferrules and are mounted in spring reinforced clips.
  • The Amp-Trap and 9F60 R-Rated fuses are UL Recognized
  • Ferrule mounting for standard clips and interchangeability with other brands of fuses
  • Current-limiting for superior equipment protection
  • Metal embossed catalog number and manufacturing date for lasting identification
  • Hookeye for non load-break isolation by hookstick:
  • On the 4.8kV an optional hookeye mounted in the factory is available
  • On all other 3" barrels if a hookeye is required, use the operating eye 9F61AAW612
  • Blown-fuse indicator to give positive identification of open fuse
  • Amp trap: 3" Barrel 2 lb tripped force - 0.50 Inch
  • 9F60: 0.125 lb tripped force – 0.20 Inch
$2,907.18
Buy Now
Mersen A480R6R-1
A480R6R-1
6E 4.8KV MED VOLTAGE Mersen R-Rated fuses are current-limiting, high interrupting rating fuses intended for the short circuit protection of medium voltage motors and motor controllers. R-Rated fuses are back-up fuses that have a minimum interrupting rating, and must be coordinated with overload relays in combination motor starters. The motor starter manufacturer generally specifies the R-Rated fuse size. These fuses come with a 3 (size D) or 4 (size E) inch diameter barrels with ferrules and are mounted in spring reinforced clips.
  • The Amp-Trap and 9F60 R-Rated fuses are UL Recognized
  • Ferrule mounting for standard clips and interchangeability with other brands of fuses
  • Current-limiting for superior equipment protection
  • Metal embossed catalog number and manufacturing date for lasting identification
  • Hookeye for non load-break isolation by hookstick:
  • On the 4.8kV an optional hookeye mounted in the factory is available
  • On all other 3" barrels if a hookeye is required, use the operating eye 9F61AAW612
  • Blown-fuse indicator to give positive identification of open fuse
  • Amp trap: 3" Barrel 2 lb tripped force - 0.50 Inch
  • 9F60: 0.125 lb tripped force – 0.20 Inch
 
$1,649.69
Buy Now
Mersen A480R9R-1
A480R9R-1
9E 4.8KV MED VOLTAGE Mersen R-Rated fuses are current-limiting, high interrupting rating fuses intended for the short circuit protection of medium voltage motors and motor controllers. R-Rated fuses are back-up fuses that have a minimum interrupting rating, and must be coordinated with overload relays in combination motor starters. The motor starter manufacturer generally specifies the R-Rated fuse size. These fuses come with a 3 (size D) or 4 (size E) inch diameter barrels with ferrules and are mounted in spring reinforced clips.
  • The Amp-Trap and 9F60 R-Rated fuses are UL Recognized
  • Ferrule mounting for standard clips and interchangeability with other brands of fuses
  • Current-limiting for superior equipment protection
  • Metal embossed catalog number and manufacturing date for lasting identification
  • Hookeye for non load-break isolation by hookstick:
  • On the 4.8kV an optional hookeye mounted in the factory is available
  • On all other 3" barrels if a hookeye is required, use the operating eye 9F61AAW612
  • Blown-fuse indicator to give positive identification of open fuse
  • Amp trap: 3" Barrel 2 lb tripped force - 0.50 Inch
  • 9F60: 0.125 lb tripped force – 0.20 Inch
$1,649.69
Buy Now
Mersen A480T4E
A480T1/2E
1/2E 4.8KV MEDIUM VOLTAGE Mersen PT fuses are current-limiting fuses with high interrupting rating, used for the primary winding protection of potential transformer. They are small dimension ferrule type fuses and mount in standard clips. Current ratings are from 0.25A to 5A
  • Ferrule mounting for standard clips and interchangeability with other brands of fuses
  • Current-limiting for superior equipment protection
  • Non-venting for silent operation
  • Metal embossed catalog number and manufacturing date for lasting identification
  • Blown-fuse indicator to give positive identification of open fuse fuse is available on the 9F60 series
$133.58
Buy Now
Mersen A480T4E
A480T1E
1E 4.8KV MEDIUM VOLTAGE Mersen PT fuses are current-limiting fuses with high interrupting rating, used for the primary winding protection of potential transformer. They are small dimension ferrule type fuses and mount in standard clips. Current ratings are from 0.25A to 5A
  • Ferrule mounting for standard clips and interchangeability with other brands of fuses
  • Current-limiting for superior equipment protection
  • Non-venting for silent operation
  • Metal embossed catalog number and manufacturing date for lasting identification
  • Blown-fuse indicator to give positive identification of open fuse fuse is available on the 9F60 series
 
$133.58
Buy Now
Mersen A480T4E
A480T2E
2E 4.8KV MEDIUM VOLTAGE Mersen PT fuses are current-limiting fuses with high interrupting rating, used for the primary winding protection of potential transformer. They are small dimension ferrule type fuses and mount in standard clips. Current ratings are from 0.25A to 5A
  • Ferrule mounting for standard clips and interchangeability with other brands of fuses
  • Current-limiting for superior equipment protection
  • Non-venting for silent operation
  • Metal embossed catalog number and manufacturing date for lasting identification
  • Blown-fuse indicator to give positive identification of open fuse fuse is available on the 9F60 series
$161.39
Buy Now
Mersen A480T4E
A480T3E
3E 4.8KV MEDIUM VOLTAGE Mersen PT fuses are current-limiting fuses with high interrupting rating, used for the primary winding protection of potential transformer. They are small dimension ferrule type fuses and mount in standard clips. Current ratings are from 0.25A to 5A
  • Ferrule mounting for standard clips and interchangeability with other brands of fuses
  • Current-limiting for superior equipment protection
  • Non-venting for silent operation
  • Metal embossed catalog number and manufacturing date for lasting identification
  • Blown-fuse indicator to give positive identification of open fuse fuse is available on the 9F60 series
$161.39
Buy Now
Mersen A480T4E
A480T4E
4E 4.8KV MEDIUM VOLTAGE Mersen PT fuses are current-limiting fuses with high interrupting rating, used for the primary winding protection of potential transformer. They are small dimension ferrule type fuses and mount in standard clips. Current ratings are from 0.25A to 5A
  • Ferrule mounting for standard clips and interchangeability with other brands of fuses
  • Current-limiting for superior equipment protection
  • Non-venting for silent operation
  • Metal embossed catalog number and manufacturing date for lasting identification
  • Blown-fuse indicator to give positive identification of open fuse fuse is available on the 9F60 series
$161.39
Buy Now
Placeholder
A480T5E
5E 4.8KV MEDIUM VOLTAGE Mersen PT fuses are current-limiting fuses with high interrupting rating, used for the primary winding protection of potential transformer. They are small dimension ferrule type fuses and mount in standard clips. Current ratings are from 0.25A to 5A
  • Ferrule mounting for standard clips and interchangeability with other brands of fuses
  • Current-limiting for superior equipment protection
  • Non-venting for silent operation
  • Metal embossed catalog number and manufacturing date for lasting identification
  • Blown-fuse indicator to give positive identification of open fuse fuse is available on the 9F60 series
$161.39
Buy Now
Mersen A4BQ100
A4BQ100
100A 600V L TD FUSE Amp-Trap 2000 A4BQ fuses are 20 percent more current limiting than any other Class L fuse on the market. When correctly coordinated, they bring a superior level of protection to service entrance equipment. Downstream circuit components have maximum protection against short circuit let-thru current. A4BQ's built-in 4-second time-delay characteristic (at 500percent of rated current) accommodates harmless inrush currents with no nuisance opening.
  • Fastest operation under short circuit conditions: Let-thru currents are typically 20 percent lower, with a corresponding let-thru energy (clearing I2t) up to 40% lower than the next fastest Class L fuse
  • Time-delay for high inrush loads such as motors and transformers, without nuisance opening
  • 300kA interrupting rating - self-certified, UL witnessed tests
  • Most current-limiting for lowest peak let-thru current; even at fault currents up to 300kA
  • Recommended for Arc Flash energy reduction
  • Pure silver links ensure lowest let-thru current and longer fuse life
  • Easy 2-to-1 selectivity for prevention of nuisance shutdowns and “blackouts”
  • Rejection-style design prevents replacement errors
  • High-visibility orange label gives instant brand recognition
  • Reduced inventory because A4BQ can replace all older types of Class L fuses now in-service
  • Metal-embossed date and catalog number for traceability and lasting identification
  • Fiberglass body provides dimensional stability in harsh industrial settings
  • High-grade silica filler ensures fast arc quenching
  • Optional mechanical TA indicator (100-6000A). Please contact factory for special trigger actuator
 
$1,332.01
Buy Now
A4BQ1000
1000A 600V L TD FUSE Amp-Trap 2000 A4BQ fuses are 20 percent more current limiting than any other Class L fuse on the market. When correctly coordinated, they bring a superior level of protection to service entrance equipment. Downstream circuit components have maximum protection against short circuit let-thru current. A4BQ's built-in 4-second time-delay characteristic (at 500percent of rated current) accommodates harmless inrush currents with no nuisance opening.
  • Fastest operation under short circuit conditions: Let-thru currents are typically 20 percent lower, with a corresponding let-thru energy (clearing I2t) up to 40% lower than the next fastest Class L fuse
  • Time-delay for high inrush loads such as motors and transformers, without nuisance opening
  • 300kA interrupting rating - self-certified, UL witnessed tests
  • Most current-limiting for lowest peak let-thru current; even at fault currents up to 300kA
  • Recommended for Arc Flash energy reduction
  • Pure silver links ensure lowest let-thru current and longer fuse life
  • Easy 2-to-1 selectivity for prevention of nuisance shutdowns and “blackouts”
  • Rejection-style design prevents replacement errors
  • High-visibility orange label gives instant brand recognition
  • Reduced inventory because A4BQ can replace all older types of Class L fuses now in-service
  • Metal-embossed date and catalog number for traceability and lasting identification
  • Fiberglass body provides dimensional stability in harsh industrial settings
  • High-grade silica filler ensures fast arc quenching
  • Optional mechanical TA indicator (100-6000A). Please contact factory for special trigger actuato
$1,269.97
Buy Now
A4BQ1200
1200A 600V L TD FUSE Amp-Trap 2000 A4BQ fuses are 20 percent more current limiting than any other Class L fuse on the market. When correctly coordinated, they bring a superior level of protection to service entrance equipment. Downstream circuit components have maximum protection against short circuit let-thru current. A4BQ's built-in 4-second time-delay characteristic (at 500percent of rated current) accommodates harmless inrush currents with no nuisance opening.
  • Fastest operation under short circuit conditions: Let-thru currents are typically 20 percent lower, with a corresponding let-thru energy (clearing I2t) up to 40% lower than the next fastest Class L fuse
  • Time-delay for high inrush loads such as motors and transformers, without nuisance opening
  • 300kA interrupting rating - self-certified, UL witnessed tests
  • Most current-limiting for lowest peak let-thru current; even at fault currents up to 300kA
  • Recommended for Arc Flash energy reduction
  • Pure silver links ensure lowest let-thru current and longer fuse life
  • Easy 2-to-1 selectivity for prevention of nuisance shutdowns and “blackouts”
  • Rejection-style design prevents replacement errors
  • High-visibility orange label gives instant brand recognition
  • Reduced inventory because A4BQ can replace all older types of Class L fuses now in-service
  • Metal-embossed date and catalog number for traceability and lasting identification
  • Fiberglass body provides dimensional stability in harsh industrial settings
  • High-grade silica filler ensures fast arc quenching
  • Optional mechanical TA indicator (100-6000A). Please contact factory for special trigger actuato
$1,269.97
Buy Now
A4BQ1200-TA
1200A 600V TD L IND. Amp-Trap 2000 A4BQ fuses are 20 percent more current limiting than any other Class L fuse on the market. When correctly coordinated, they bring a superior level of protection to service entrance equipment. Downstream circuit components have maximum protection against short circuit let-thru current. A4BQ's built-in 4-second time-delay characteristic (at 500percent of rated current) accommodates harmless inrush currents with no nuisance opening.
  • Fastest operation under short circuit conditions: Let-thru currents are typically 20 percent lower, with a corresponding let-thru energy (clearing I2t) up to 40% lower than the next fastest Class L fuse
  • Time-delay for high inrush loads such as motors and transformers, without nuisance opening
  • 300kA interrupting rating - self-certified, UL witnessed tests
  • Most current-limiting for lowest peak let-thru current; even at fault currents up to 300kA
  • Recommended for Arc Flash energy reduction
  • Pure silver links ensure lowest let-thru current and longer fuse life
  • Easy 2-to-1 selectivity for prevention of nuisance shutdowns and “blackouts”
  • Rejection-style design prevents replacement errors
  • High-visibility orange label gives instant brand recognition
  • Reduced inventory because A4BQ can replace all older types of Class L fuses now in-service
  • Metal-embossed date and catalog number for traceability and lasting identification
  • Fiberglass body provides dimensional stability in harsh industrial settings
  • High-grade silica filler ensures fast arc quenching
  • Optional mechanical TA indicator (100-6000A). Please contact factory for special trigger actuato
$1,317.39
Buy Now
Mersen A4BQ1350
A4BQ1350
1350A 600V TD L Amp-Trap 2000 A4BQ fuses are 20 percent more current limiting than any other Class L fuse on the market. When correctly coordinated, they bring a superior level of protection to service entrance equipment. Downstream circuit components have maximum protection against short circuit let-thru current. A4BQ's built-in 4-second time-delay characteristic (at 500percent of rated current) accommodates harmless inrush currents with no nuisance opening.
  • Fastest operation under short circuit conditions: Let-thru currents are typically 20 percent lower, with a corresponding let-thru energy (clearing I2t) up to 40% lower than the next fastest Class L fuse
  • Time-delay for high inrush loads such as motors and transformers, without nuisance opening
  • 300kA interrupting rating - self-certified, UL witnessed tests
  • Most current-limiting for lowest peak let-thru current; even at fault currents up to 300kA
  • Recommended for Arc Flash energy reduction
  • Pure silver links ensure lowest let-thru current and longer fuse life
  • Easy 2-to-1 selectivity for prevention of nuisance shutdowns and “blackouts”
  • Rejection-style design prevents replacement errors
  • High-visibility orange label gives instant brand recognition
  • Reduced inventory because A4BQ can replace all older types of Class L fuses now in-service
  • Metal-embossed date and catalog number for traceability and lasting identification
  • Fiberglass body provides dimensional stability in harsh industrial settings
  • High-grade silica filler ensures fast arc quenching
  • Optional mechanical TA indicator (100-6000A). Please contact factory for special trigger actuator
$2,087.18
Buy Now
Mersen A4BQ1400
A4BQ1400
1400A 600V TD L Amp-Trap 2000 A4BQ fuses are 20 percent more current limiting than any other Class L fuse on the market. When correctly coordinated, they bring a superior level of protection to service entrance equipment. Downstream circuit components have maximum protection against short circuit let-thru current. A4BQ's built-in 4-second time-delay characteristic (at 500percent of rated current) accommodates harmless inrush currents with no nuisance opening.
  • Fastest operation under short circuit conditions: Let-thru currents are typically 20 percent lower, with a corresponding let-thru energy (clearing I2t) up to 40% lower than the next fastest Class L fuse
  • Time-delay for high inrush loads such as motors and transformers, without nuisance opening
  • 300kA interrupting rating - self-certified, UL witnessed tests
  • Most current-limiting for lowest peak let-thru current; even at fault currents up to 300kA
  • Recommended for Arc Flash energy reduction
  • Pure silver links ensure lowest let-thru current and longer fuse life
  • Easy 2-to-1 selectivity for prevention of nuisance shutdowns and “blackouts”
  • Rejection-style design prevents replacement errors
  • High-visibility orange label gives instant brand recognition
  • Reduced inventory because A4BQ can replace all older types of Class L fuses now in-service
  • Metal-embossed date and catalog number for traceability and lasting identification
  • Fiberglass body provides dimensional stability in harsh industrial settings
  • High-grade silica filler ensures fast arc quenching
  • Optional mechanical TA indicator (100-6000A). Please contact factory for special trigger actuator
$2,087.18
Buy Now