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Fuses

Power Products/Fuses 
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600V 600A CLASS J TD FUSE

600V 600A CLASS J TD FUSE

Item #: AJT600

Supplier Part #: AJT600
Brand: Mersen

Amp-Trap 2000® AJT fuses provide non-indication as well as a SmartSpot visual open fuse indicator. With advanced material technology the AJT fuse provides IEC Type 2 No Damage protection to main, feeder, and branch circuits, for all types of loads — yet, they require only half the mounting space needed for 600VAC Class RK fuses. AJT’s time-delay characteristics are ideal for handling typical motor and transformer inrush currents, while also providing superior current-limiting ability.

Time-delay for motor starting and transformer inrush; Control panels; CSA certified to standard C22.2 No. 248.8; Bus duct; Fiberglass body provides dimensional stability in harsh industrial settings; Mains; Feeders; DC listed to UL standard 248; UL listed; Non-indicating or solid state SmartSpot visual blown fuse indicator; Transformers; Load centers; Most current-limiting UL class fuse; Motor circuits; High-grade silica filler ensures fast arc quenching; Unique Class J dimensions prevent replacement errors; Recommended for Arc Flash energy reduction; Easy 2-to-1 selectivity for prevention of nuisance shutdowns; DC tested to UL standard 248; Extremely current-limiting for low peak let-thru current; Circuit breaker back-up; UL listed to standard 248-8 File E2137; Branch circuits; Small footprint requires less mounting space and allows smaller, more economical fuse blocks; Lighting, heating & general loads; IEC 60269-2-1; Optional EI indicator/switch mount for AJT70 to 600 open fuse indication; High-visibility orange label gives instant brand recognition; Metal-embossed date and catalog number for traceability and lasting identification; 300kA interrupting rating – self-certified, UL witnessed tests

$812.93 /EA
NOT CURRENTLY IN STOCK
600V 250A CLASS J TD FUSE

600V 250A CLASS J TD FUSE

Item #: AJT250/600

Supplier Part #: AJT250/600
Brand: Mersen

AJT Reducer Fuses are a safe permanent solution for decreasing your current rating without using a fuse reducer which are designed and list for temporary use only. These reducer fuses provide the same trusted protection levels as a traditional AJT fuses but in a larger body.

Branch circuits; Most current-limiting UL class fuse; Mains; High-grade silica filler ensures fast arc quenching; High-visibility orange label gives instant brand recognition; Metal-embossed date and catalog number for traceability and lasting identification; Transformers; Motor circuits; Circuit breaker back-up; Replaces traditional temporary-use only Fuse Reducer accessories; Control panels; Feeders; Lighting, heating & general loads; Fiberglass body provides dimensional stability in harsh industrial settings; Extremely current-limiting for low peak let-thru current; Bus duct; UL Listed to standard 248-8 File E2137; Recommended for Arc Flash energy reduction; Load centers; IEC 269-2-1; Time-delay for motor starting and transformer inrush; Optional EI indicator/switch

$812.93 /EA
NOT CURRENTLY IN STOCK
600V 300A CLASS J TD FUSE

600V 300A CLASS J TD FUSE

Item #: AJT300/600

Supplier Part #: AJT300/600
Brand: Mersen

AJT Reducer Fuses are a safe permanent solution for decreasing your current rating without using a fuse reducer which are designed and list for temporary use only. These reducer fuses provide the same trusted protection levels as a traditional AJT fuses but in a larger body.

Motor circuits; Replaces traditional temporary-use only Fuse Reducer accessories; IEC 269-2-1; Fiberglass body provides dimensional stability in harsh industrial settings; Time-delay for motor starting and transformer inrush; Lighting, heating & general loads; Feeders; Load centers; Metal-embossed date and catalog number for traceability and lasting identification; Optional EI indicator/switch; Extremely current-limiting for low peak let-thru current; Circuit breaker back-up; Mains; UL Listed to standard 248-8 File E2137; Transformers; High-visibility orange label gives instant brand recognition; Control panels; Bus duct; Recommended for Arc Flash energy reduction; Most current-limiting UL class fuse; Branch circuits; High-grade silica filler ensures fast arc quenching

$812.93 /EA
NOT CURRENTLY IN STOCK
600V 450A CLASS J TD FUSE

600V 450A CLASS J TD FUSE

Item #: AJT450

Supplier Part #: AJT450
Brand: Mersen

Amp-Trap 2000® AJT fuses provide non-indication as well as a SmartSpot visual open fuse indicator. With advanced material technology the AJT fuse provides IEC Type 2 No Damage protection to main, feeder, and branch circuits, for all types of loads — yet, they require only half the mounting space needed for 600VAC Class RK fuses. AJT’s time-delay characteristics are ideal for handling typical motor and transformer inrush currents, while also providing superior current-limiting ability.

DC listed to UL standard 248; Time-delay for motor starting and transformer inrush; Most current-limiting UL class fuse; Feeders; 300kA interrupting rating – self-certified, UL witnessed tests; Non-indicating or solid state SmartSpot visual blown fuse indicator; Circuit breaker back-up; IEC 60269-2-1; UL listed; Easy 2-to-1 selectivity for prevention of nuisance shutdowns; CSA certified to standard C22.2 No. 248.8; Unique Class J dimensions prevent replacement errors; Mains; High-visibility orange label gives instant brand recognition; DC tested to UL standard 248; Metal-embossed date and catalog number for traceability and lasting identification; Load centers; Bus duct; Control panels; Branch circuits; Small footprint requires less mounting space and allows smaller, more economical fuse blocks; High-grade silica filler ensures fast arc quenching; Lighting, heating & general loads; Fiberglass body provides dimensional stability in harsh industrial settings; Transformers; UL listed to standard 248-8 File E2137; Recommended for Arc Flash energy reduction; Extremely current-limiting for low peak let-thru current; Optional EI indicator/switch mount for AJT70 to 600 open fuse indication; Motor circuits

$843.97 /EA
NOT CURRENTLY IN STOCK
J TD FUSE 600V 450A AJT EI

J TD FUSE 600V 450A AJT EI

Item #: AJT450EI

Supplier Part #: AJT450EI
Brand: Mersen

Amp-Trap 2000® AJT fuses provide non-indication as well as a SmartSpot visual open fuse indicator. With advanced material technology the AJT fuse provides IEC Type 2 No Damage protection to main, feeder, and branch circuits, for all types of loads — yet, they require only half the mounting space needed for 600VAC Class RK fuses. AJT’s time-delay characteristics are ideal for handling typical motor and transformer inrush currents, while also providing superior current-limiting ability.

Small footprint requires less mounting space and allows smaller, more economical fuse blocks; Branch circuits; Circuit breaker back-up; Unique Class J dimensions prevent replacement errors; Transformers; Fiberglass body provides dimensional stability in harsh industrial settings; High-visibility orange label gives instant brand recognition; Mains; Bus duct; Control panels; IEC 60269-2-1; Non-indicating or solid state SmartSpot visual blown fuse indicator; Load centers; Lighting, heating & general loads; CSA certified to standard C22.2 No. 248.8; Extremely current-limiting for low peak let-thru current; DC tested to UL standard 248; DC listed to UL standard 248; Recommended for Arc Flash energy reduction; Most current-limiting UL class fuse; Motor circuits; UL listed; Metal-embossed date and catalog number for traceability and lasting identification; High-grade silica filler ensures fast arc quenching; 300kA interrupting rating – self-certified, UL witnessed tests; Time-delay for motor starting and transformer inrush; UL listed to standard 248-8 File E2137; Easy 2-to-1 selectivity for prevention of nuisance shutdowns; Feeders; Optional EI indicator/switch mount for AJT70 to 600 open fuse indication

$914.27 /EA
NOT CURRENTLY IN STOCK
600V 500A CLASS J TD FUSE

600V 500A CLASS J TD FUSE

Item #: AJT500

Supplier Part #: AJT500
Brand: Mersen

Amp-Trap 2000® AJT fuses provide non-indication as well as a SmartSpot visual open fuse indicator. With advanced material technology the AJT fuse provides IEC Type 2 No Damage protection to main, feeder, and branch circuits, for all types of loads — yet, they require only half the mounting space needed for 600VAC Class RK fuses. AJT’s time-delay characteristics are ideal for handling typical motor and transformer inrush currents, while also providing superior current-limiting ability.

Control panels; High-visibility orange label gives instant brand recognition; Time-delay for motor starting and transformer inrush; Most current-limiting UL class fuse; Recommended for Arc Flash energy reduction; IEC 60269-2-1; Circuit breaker back-up; Branch circuits; Small footprint requires less mounting space and allows smaller, more economical fuse blocks; High-grade silica filler ensures fast arc quenching; Bus duct; Extremely current-limiting for low peak let-thru current; UL listed to standard 248-8 File E2137; DC listed to UL standard 248; Fiberglass body provides dimensional stability in harsh industrial settings; Optional EI indicator/switch mount for AJT70 to 600 open fuse indication; Feeders; Transformers; Metal-embossed date and catalog number for traceability and lasting identification; Unique Class J dimensions prevent replacement errors; UL listed; 300kA interrupting rating – self-certified, UL witnessed tests; Easy 2-to-1 selectivity for prevention of nuisance shutdowns; DC tested to UL standard 248; Load centers; Non-indicating or solid state SmartSpot visual blown fuse indicator; CSA certified to standard C22.2 No. 248.8; Mains; Motor circuits; Lighting, heating & general loads

$843.97 /EA
NOT CURRENTLY IN STOCK
J TD FUSE 600V 500A AJT EI

J TD FUSE 600V 500A AJT EI

Item #: AJT500EI

Supplier Part #: AJT500EI
Brand: Mersen

Amp-Trap 2000® AJT fuses provide non-indication as well as a SmartSpot visual open fuse indicator. With advanced material technology the AJT fuse provides IEC Type 2 No Damage protection to main, feeder, and branch circuits, for all types of loads — yet, they require only half the mounting space needed for 600VAC Class RK fuses. AJT’s time-delay characteristics are ideal for handling typical motor and transformer inrush currents, while also providing superior current-limiting ability.

Branch circuits; Most current-limiting UL class fuse; Metal-embossed date and catalog number for traceability and lasting identification; UL listed; 300kA interrupting rating – self-certified, UL witnessed tests; Recommended for Arc Flash energy reduction; Mains; High-visibility orange label gives instant brand recognition; High-grade silica filler ensures fast arc quenching; Lighting, heating & general loads; UL listed to standard 248-8 File E2137; Circuit breaker back-up; IEC 60269-2-1; DC tested to UL standard 248; Feeders; Optional EI indicator/switch mount for AJT70 to 600 open fuse indication; Easy 2-to-1 selectivity for prevention of nuisance shutdowns; Motor circuits; Load centers; Fiberglass body provides dimensional stability in harsh industrial settings; Bus duct; Unique Class J dimensions prevent replacement errors; Control panels; CSA certified to standard C22.2 No. 248.8; DC listed to UL standard 248; Transformers; Time-delay for motor starting and transformer inrush; Extremely current-limiting for low peak let-thru current; Small footprint requires less mounting space and allows smaller, more economical fuse blocks; Non-indicating or solid state SmartSpot visual blown fuse indicator

$914.27 /EA
NOT CURRENTLY IN STOCK
600V 500A CLASS J HS FUSE

600V 500A CLASS J HS FUSE

Item #: HSJ500

Supplier Part #: HSJ500
Brand: Mersen

The High Speed Class J (HSJ) combines the low I2t of a semiconductor fuse and the branch-circuit performance of a Class J UL Listed fuse into a single design. The HSJ can provide both branch circuit protection per NEC requirements, as well as very low I2t for protection of power semiconductors such as Diodes, SCRs, GTOs and SSRs.

DC listed to UL 248; CSA certified to standard C22.2 no. 248.8; Soft-starters; Phase controllers; Optimized over-load capability for withstanding elevated levels of current during electronic motor controller starts; Electronic motor controllers; Branch circuits; Excellent cycling ability for frequent starts/stops without nuisance opening; UL listed to standard 248-8 File E2137; Control panels; Drives; Solid state relays; Low I2t (low thermal energy)

$800.52 /EA
NOT CURRENTLY IN STOCK
600V 450A CLASS J FUSE

600V 450A CLASS J FUSE

Item #: A4J450

Supplier Part #: A4J450
Brand: Mersen

Amp-Trap fast-acting A4J fuses deliver excellent current-limiting protection to a wide variety of applications. Their unique dimensions prevent the substitution of other fuses with lower voltage ratings, interrupting ratings, or current-limiting capability.

Bus duct; Feeder circuits; Fiberglass body provides dimensional stability in harsh industrial environments; Load centers; Switchboards; Unique dimensions prevent replacement by other fuse classes; UL listed to standard 248-8 File E2137; Lighting, heating, and general loads; Capacitors; CSA certified to standard C22.2 no. 248.8; Panelboards; IEC 269-2-1; Circuit breakers; High current limitation for low peak let-thru current; DC listed to UL 248; Easy-to-read imprint label for quick recognition and replacement

$705.79 /EA
NOT CURRENTLY IN STOCK
600V 500A CLASS J FUSE

600V 500A CLASS J FUSE

Item #: A4J500

Supplier Part #: A4J500
Brand: Mersen

Amp-Trap fast-acting A4J fuses deliver excellent current-limiting protection to a wide variety of applications. Their unique dimensions prevent the substitution of other fuses with lower voltage ratings, interrupting ratings, or current-limiting capability.

Easy-to-read imprint label for quick recognition and replacement; High current limitation for low peak let-thru current; Capacitors; Fiberglass body provides dimensional stability in harsh industrial environments; Lighting, heating, and general loads; Load centers; Switchboards; Circuit breakers; UL listed to standard 248-8 File E2137; Bus duct; CSA certified to standard C22.2 no. 248.8; Feeder circuits; IEC 269-2-1; Panelboards; Unique dimensions prevent replacement by other fuse classes; DC listed to UL 248

$710.34 /EA
NOT CURRENTLY IN STOCK
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