Browse Medium Voltage Fuses
Mersen (formerly Ferraz Shawmut) medium voltage fuses distributed by Gross Automation. Select a product below for specifications, datasheets, and ordering information.
Mersen medium voltage fuses protect electrical distribution systems operating at 2.4kV to 38kV. Product families include CL-14, CS-3, bolt-in, ferrule, and DIN-size fuses for substations, industrial plants, and switchgear.
34 Products in Medium Voltage Fuses
1.5kV Capacitor / Special Purpose Fuses
Ferraz Shawmut capacitor fuses are designed to ANSI C37-41. They are current limiting operating without noise or discharge and are designed to be used indoors or outdoors in a weatherproof enclosure. These are non-disconnecting fuses requiring the usage of a disconnect switch. These capacitor fuses provide both short circuit and overload protection and are intended to protect against capacitor case rupture or dielectric failure within the capacitor. The various mounting configurations offer to the manufacturers a wide range of cost and space saving solutions. It provides to the users a large choice of equivalent products to the major fuse manufacturer’s.
2.4kV Ferrule / Medium Voltage Fuses
R-rated Motor Starter Fuses - Amp-trap 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. Amp-trap R-rated fuses are rated 2R to 36R.
2.4kV / Medium Voltage Fuses
Potential Transformer Fuses - Ferraz Shawmut E-rated PT fuses are current limiting fuses with high interrupting rating, used for primary winding protection of potential transformers. They are small dimension, ferrule-type fuses and mounted in standard clips.
2.5kV Capacitor / Special Purpose Fuses
Ferraz Shawmut capacitor fuses are designed to ANSI C37-41. They are current limiting operating without noise or discharge and are designed to be used indoors or outdoors in a weatherproof enclosure. These are non-disconnecting fuses requiring the usage of a disconnect switch. These capacitor fuses provide both short circuit and overload protection and are intended to protect against capacitor case rupture or dielectric failure within the capacitor. The various mounting configurations offer to the manufacturers a wide range of cost and space saving solutions. It provides to the users a large choice of equivalent products to the major fuse manufacturer’s.
228-700 Series Medium Voltage / Fuse Clips for CL-14 Fuses
The Clip Lock design provides a reliable, high-pressure contact. Ferraz Shawmut CL-14 fuses have copper tabs which slide into position between the clip casting and cam. When the cam is locked by moving the pull ring, a high-pressure contact is made between the clip casting and fuse tab. Each clip includes two .44” diameter counter-sunk holes on 2” centers and two flat head socket screws (3/8-16 UNRC, recommended torque 200 pound-inches) for mounting the clip on standard NEMA insulators. These clips will accommodate 5kV and 15kV CL-14 fuses rated 10E to 600E. Order catalog number 228-700-520 for one pair of fuse clips, enough for one fuse.
228-700 Series Medium Voltage / Fuse Clips for CS- Fuses
These spring-reinforced clips will accommodate all 3" diameter, one and two barrel E-rated and R-rated medium voltage ferrule-type fuses. The clip and reinforcing spring are intended to be bolted to a copper bus bar through two .41" x 1.06" slots. A minimum copper-bus cross section of 1/4" x 1-1/2" is recommended for maximum fuse ratings of 24R and 450E. Catalog number is 228-700-530 for one pair of spring-reinforced clips, enough for one fuse.
3.0kV Capacitor / Special Purpose Fuses
Ferraz Shawmut capacitor fuses are designed to ANSI C37-41. They are current limiting operating without noise or discharge and are designed to be used indoors or outdoors in a weatherproof enclosure. These are non-disconnecting fuses requiring the usage of a disconnect switch. These capacitor fuses provide both short circuit and overload protection and are intended to protect against capacitor case rupture or dielectric failure within the capacitor. The various mounting configurations offer to the manufacturers a wide range of cost and space saving solutions. It provides to the users a large choice of equivalent products to the major fuse manufacturer’s.
3.3kV DIN Size / Medium Voltage Fuses
R-rated Motor Starter Fuses - Amp-trap R-rated DIN style fuses are current limiting, high interrupting rating fuses, intended for the short circuit protection of medium voltage motors and motor controllers. This product range offers North American R-rated performance in the IEC DIN mounting configuration of 442mm. R-rated fuses are applied as back up fuses that have a minimum interrupting rating, and must be coordinated with overload relays in combination motor starters. Amp-trap R-rated, DIN type fuses are offered in voltage ratings of 3.3KV, 5.3KV and 7.2KV in ratings from 2R to 19R. All fuses within this product group are UL component recognized.
4.3kV Capacitor / Special Purpose Fuses
Ferraz Shawmut capacitor fuses are designed to ANSI C37-41. They are current limiting operating without noise or discharge and are designed to be used indoors or outdoors in a weatherproof enclosure. These are non-disconnecting fuses requiring the usage of a disconnect switch. These capacitor fuses provide both short circuit and overload protection and are intended to protect against capacitor case rupture or dielectric failure within the capacitor. The various mounting configurations offer to the manufacturers a wide range of cost and space saving solutions. It provides to the users a large choice of equivalent products to the major fuse manufacturer’s.
4.8kV Ferrule / Medium Voltage Fuses
R-rated Motor Starter Fuses - Amp-trap 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. Amp-trap R-rated fuses are rated 2R to 36R.
4.8kV / Medium Voltage Fuses
Potential Transformer Fuses - Ferraz Shawmut E-rated PT fuses are current limiting fuses with high interrupting rating, used for primary winding protection of potential transformers. They are small dimension, ferrule-type fuses and mounted in standard clips.
5.0kV / Medium Voltage Fuses
Potential Transformer Fuses - Ferraz Shawmut E-rated PT fuses are current limiting fuses with high interrupting rating, used for primary winding protection of potential transformers. They are small dimension, ferrule-type fuses and mounted in standard clips.
5.5kV Capacitor / Special Purpose Fuses
Ferraz Shawmut capacitor fuses are designed to ANSI C37-41. They are current limiting operating without noise or discharge and are designed to be used indoors or outdoors in a weatherproof enclosure. These are non-disconnecting fuses requiring the usage of a disconnect switch. These capacitor fuses provide both short circuit and overload protection and are intended to protect against capacitor case rupture or dielectric failure within the capacitor. The various mounting configurations offer to the manufacturers a wide range of cost and space saving solutions. It provides to the users a large choice of equivalent products to the major fuse manufacturer’s.
5.5kV DIN Size / Medium Voltage Fuses
R-rated Motor Starter Fuses - Amp-trap R-rated DIN style fuses are current limiting, high interrupting rating fuses, intended for the short circuit protection of medium voltage motors and motor controllers. This product range offers North American R-rated performance in the IEC DIN mounting configuration of 442mm. R-rated fuses are applied as back up fuses that have a minimum interrupting rating, and must be coordinated with overload relays in combination motor starters. Amp-trap R-rated, DIN type fuses are offered in voltage ratings of 3.3KV, 5.3KV and 7.2KV in ratings from 2R to 19R. All fuses within this product group are UL component recognized.
7.2kV Bolted / Medium Voltage Fuses
Amp-trap 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. Amp-trap R-rated fuses are rated 2R to 36R, at 2.4, 4.8, and 7.2kV. 4.8 and 7.2kV fuses are UL Recognized. The 7.2kV (A072F) series has the same dimensions as the 4.8kV (A480R), allowing smaller 7.2kV equipment or 4.8kV upgrades, and is available as a bolt in version.recognized.
7.2kV DIN Size / Medium Voltage Fuses
R-rated Motor Starter Fuses - Amp-trap R-rated DIN style fuses are current limiting, high interrupting rating fuses, intended for the short circuit protection of medium voltage motors and motor controllers. This product range offers North American R-rated performance in the IEC DIN mounting configuration of 442mm. R-rated fuses are applied as back up fuses that have a minimum interrupting rating, and must be coordinated with overload relays in combination motor starters. Amp-trap R-rated, DIN type fuses are offered in voltage ratings of 3.3KV, 5.3KV and 7.2KV in ratings from 2R to 19R. All fuses within this product group are UL component recognized.
7.2kV Ferrule / Medium Voltage Fuses
R-rated Motor Starter Fuses - Amp-trap 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. Amp-trap R-rated fuses are rated 2R to 24R. 7.2kV fuses are UL Recognized. The 7.2kV (A072F) series has the same dimensions as the 4.8kV (A480R), allowing smaller 7.2kV equipment or 4.8kV upgrades.
7.2kV / Medium Voltage Fuses
Potential Transformer Fuses - Ferraz Shawmut E-rated PT fuses are current limiting fuses with high interrupting rating, used for primary winding protection of potential transformers. They are small dimension, ferrule-type fuses and mounted in standard clips.
9F61 EK Fuse-Supports and Fuse-Disconnects
9F61 Fuses formally made by GE
Bolt-In Series / 5.5kV / Medium Voltage
5kV Bolt-In Fuses - Amp-trap Bolt-in Series E-rated fuses are single, double or triple barrel (3" diam.) with end mounts designed for bolting directly to equipment bus or terminal pads. They are UL listed and are for use indoors (or outdoors in a weatherproof enclosure). The unique time-current characteristic of Ferraz Shawmut E-rated fuses allows them to be closely sized to transformer full load rated current, as recommended by IEEE guidelines, without being affected by normal magnetizing inrush current. Bolt-in fuses are typically sized at transformer rated current of 133%, thereby providing superior overall protection.
Medium Voltage Fuses / Capacitor Fuses
On one hand, you need current-limiting protection for medium-voltage transformers and distribution systems. On the other, you need short circuit protection for medium-voltage motors and motor controllers. Ferraz Shawmut's line of medium-voltage UL Listed fuses fills the bill with E-rated, R-rated and capacitor fuses.
CL-14 Series / 15.5kV / Medium Voltage
15kV Clip-Lock Mounted Fuses - Amp-trap CL-14 E-rated 15kV fuses have 3 In diameter barrels and mount in unique cam-locking clips, for superior connections as well as easy installation and replacement. They are UL listed as "general purpose current-limiting fuses" and are for use indoors (or outdoors in a weatherproof enclosure). The unique time-current characteristic of Ferraz Shawmut E-rated fuses allows them to be closely sized to transformer full load rated current, as recommended by IEEE guidelines, without being affected by normal magnetizing inrush current. CL-14 fuses are typically sized at transformer rated current of 133%, thereby providing superior overall protection.
CL-14 Series / 5.5kV / Medium Voltage
5kV Clip-Lock Mounted Fuses - Amp-trap CL-14 E-rated 5kV fuses have 3 In diameter barrels and mount in unique cam-locking clips, for superior connections as well as easy installation and replacement. They are UL listed as "general purpose current-limiting fuses" and are for use indoors (or outdoors in a weatherproof enclosure). The unique time-current characteristic of Ferraz Shawmut E-rated fuses allows them to be closely sized to transformer full load rated current, as recommended by IEEE guidelines, without being affected by normal magnetizing inrush current. CL-14 fuses are typically sized at transformer rated current of 133%, thereby providing superior overall protection.
CS-3 Series / 15.5kV / Medium Voltage
15.5kV Ferrule Mounted Fuses - Amp-trap CS-3 E-rated 5kV, 8kV and 15kV fuses have 2 or 3 Inch diameter barrels with ferrules and are mounted in spring reinforced clips. They are UL listed as "general purpose current-limiting fuses" and are for use indoors (or outdoors in a weatherproof enclosure). The unique time-current characteristic of Ferraz Shawmut E-rated fuses allows them to be closely sized to transformer full-load rated current, as recommended by IEEE guidelines, without being affected by normal magnetizing inrush current. CS-3 fuses are typically sized at transformer rated current of 133%, thereby providing superior overall protection.
CS-3 Series / 5.5kV / Medium Voltage
5kV Ferrule Mounted Fuses - Amp-trap CS-3 E-rated 5kV, 8kV and 15kV fuses have 2 or 3 Inch diameter barrels with ferrules and are mounted in spring reinforced clips. They are UL listed as "general purpose current-limiting fuses" and are for use indoors (or outdoors in a weatherproof enclosure). The unique time-current characteristic of Ferraz Shawmut E-rated fuses allows them to be closely sized to transformer full-load rated current, as recommended by IEEE guidelines, without being affected by normal magnetizing inrush current. CS-3 fuses are typically sized at transformer rated current of 133%, thereby providing superior overall protection.
CS-3 Series / 8.25kV / Medium Voltage
8.25kV Ferrule Mounted Fuses - Amp-trap CS-3 E-rated 5kV, 8kV and 15kV fuses have 2 or 3 Inch diameter barrels with ferrules and are mounted in spring reinforced clips. They are UL listed as "general purpose current-limiting fuses" and are for use indoors (or outdoors in a weatherproof enclosure). The unique time-current characteristic of Ferraz Shawmut E-rated fuses allows them to be closely sized to transformer full-load rated current, as recommended by IEEE guidelines, without being affected by normal magnetizing inrush current. CS-3 fuses are typically sized at transformer rated current of 133%, thereby providing superior overall protection.
Medium Voltage Fuses / E-Rated
On one hand, you need current-limiting protection for medium-voltage transformers and distribution systems. On the other, you need short circuit protection for medium-voltage motors and motor controllers. Ferraz Shawmut's line of medium-voltage UL Listed fuses fills the bill with E-rated, R-rated and capacitor fuses.
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On one hand, you need current-limiting protection for medium-voltage transformers and distribution systems. On the other, you need short circuit protection for medium-voltage motors and motor controllers. Ferraz Shawmut's line of medium-voltage UL Listed fuses fills the bill with E-rated, R-rated and capacitor fuses.
Fuse Clips for Medium Voltage CL-14 Fuses
The Clip Lock design provides a reliable, high-pressure contact. Ferraz Shawmut CL-14 fuses have copper tabs which slide into position between the clip casting and cam. When the cam is locked by moving the pull ring, a high-pressure contact is made between the clip casting and fuse tab. Each clip includes two .44” diameter counter-sunk holes on 2” centers and two flat head socket screws (3/8-16 UNRC, recommended torque 200 pound-inches) for mounting the clip on standard NEMA insulators. These clips will accommodate 5kV and 15kV CL-14 fuses rated 10E to 600E. Order catalog number 228-700-520 for one pair of fuse clips, enough for one fuse.
Fuse Clips for Medium Voltage CS-3 Fuses
These spring-reinforced clips will accommodate all 3" diameter, one and two barrel E-rated and R-rated medium voltage ferrule-type fuses. The clip and reinforcing spring are intended to be bolted to a copper bus bar through two .41" x 1.06" slots. A minimum copper-bus cross section of 1/4" x 1-1/2" is recommended for maximum fuse ratings of 24R and 450E. Catalog number is 228-700-530 for one pair of spring-reinforced clips, enough for one fuse.
Medium Voltage Fuses / Accessories
On one hand, you need current-limiting protection for medium-voltage transformers and distribution systems. On the other, you need short circuit protection for medium-voltage motors and motor controllers. Ferraz Shawmut's line of medium-voltage UL Listed fuses fills the bill with E-rated, R-rated and capacitor fuses.
Power Fuses (formally from GE)
9F61 Supports & Disconnects formally made by GE
Medium Voltage Fuses / P.T. Fuses
On one hand, you need current-limiting protection for medium-voltage transformers and distribution systems. On the other, you need short circuit protection for medium-voltage motors and motor controllers. Ferraz Shawmut's line of medium-voltage UL Listed fuses fills the bill with E-rated, R-rated and capacitor fuses.
Medium Voltage Fuses / R-Rated
On one hand, you need current-limiting protection for medium-voltage transformers and distribution systems. On the other, you need short circuit protection for medium-voltage motors and motor controllers. Ferraz Shawmut's line of medium-voltage UL Listed fuses fills the bill with E-rated, R-rated and capacitor fuses.