High-speed fuse designed for semiconductor protection in industrial power applications with a robust ceramic body, integrated striker, and open slot blades for bolted mounting.
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Why Choose the Mersen P300600 Protistor® High-Speed Fuse?
The Mersen P300600 is a premium Protistor® Size 70 high-speed semiconductor fuse engineered to provide ultra-fast protection for sensitive power electronic equipment. Designed for demanding industrial applications, it protects diodes, thyristors, GTOs and IGBTs against damaging short-circuit and overcurrent conditions while helping maximise system reliability and minimise costly downtime.
Part of the advanced Mersen Protistor® Size 70 series, the P300600 features a square ceramic body with open slot blade terminals and an integrated striker indicator. It is manufactured using pure silver fuse elements embedded in solidified sand to deliver exceptionally low let-through energy and high interrupting performance for modern power conversion equipment.
Rated at 63 A with a 1250 V AC (IEC) / 1300 V AC (UL) voltage rating, the P300600 is ideal for industrial drives, converters, UPS systems, renewable energy installations and other high-performance semiconductor protection applications.
Key Advantages
Ultra-fast aR semiconductor protection fuse.
63 A current rating for industrial power electronics.
1250 V AC IEC / 1300 V AC UL voltage rating.
Protects diodes, thyristors, GTOs and IGBTs.
126 kA AC breaking capacity.
Integrated striker indicator for simplified maintenance.
Key Features
Mersen Protistor® Size 70 series.
Catalogue number: PC70UD13C63EF.
63 A rated current.
1250 V AC IEC / 1300 V AC UL operating voltage.
aR ultra-fast semiconductor protection characteristic.
Open slot blade terminals (EF style).
Integrated striker indicator.
Silver-plated contacts with square ceramic body construction.
Technical Specifications
Manufacturer: Mersen
Series: Protistor® Size 70
Catalogue number: PC70UD13C63EF
Part number: P300600
Product type: High-speed semiconductor fuse
Current rating: 63 A
Rated voltage (IEC): 1250 V AC
Rated voltage (UL): 1300 V AC
Fuse characteristic: aR ultra-fast
Breaking capacity: 126 kA AC
Terminal type: Open slot blade terminals (EF style)
Indicator: Integrated striker
Pre-arcing I²t: 210 A²s
Clearing I²t: 1680 A²s
Power dissipation: 26 W at In
Weight: Approx. 0.36 kg
RoHS compliant: Yes
Reliable Protection for Power Electronics
The Mersen P300600 has been specifically developed for modern power conversion equipment where semiconductor devices require rapid fault clearance. Its low I²t performance helps minimise thermal stress during fault conditions, reducing the risk of expensive component damage and improving overall equipment availability.
Suitable for OEM installations and maintenance replacements, the P300600 provides dependable protection in demanding industrial environments where high-speed semiconductor protection is essential.
Typical Applications
Variable speed drives (VSDs).
Industrial power converters.
Renewable energy inverter systems.
Uninterruptible power supplies (UPS).
Motor drives and soft starters.
Industrial automation and power distribution equipment.
Technical Specifications
Item number
P300600
Catalogue No
PC70UD13C63EF
Description
Square Body High-Speed Fuse Protistor® Size 70 aR 1250VAC IEC 1300VAC UL 63A With Striker Open Slot Blades
EAN/UPC Code
3605340330854
Rated voltage AC UL
1300 V
Rated voltage AC IEC
1250 V
Ampere Rating
63 A
AC or DC
AC
Speed/Characteristic
aR
Fuse Size
70
Mounting
Bolted
Clearing I2t At Rated Voltage
1680 A²s
Melting I2t
210 A²s
AC Max I.R./Breaking Capacity
I1: 126 kA
Indication System
Yes
Indication System Type
Striker
Connection/Terminal Material
Silver-Plated Copper
Connection/Terminal Type
Open Slot Blades
Product Width
39.8 mm
Product Length
123.4 mm
Product Height
49.5 mm
Sell Pack Quantity
3 EA
Sell Pack Weight
1.074 kg
Sell Pack Width
127 mm
Sell Pack Length
137 mm
Sell Pack Height
65 mm
Product group
Semiconductor Protection Fuses
Body/Insulating Material
Ceramic
Product Weight
0.358 kg
Power Dissipation at Rated Current Value
26 W
HS Code
85351000
Frequently Asked Questions
What is the Mersen P300600 used for?
The P300600 is an ultra-fast semiconductor fuse designed to protect diodes, thyristors, GTOs and IGBTs from short-circuit and overcurrent faults.
What is the current rating of the P300600?
The Mersen P300600 has a continuous current rating of 63 A.
What voltage is the P300600 rated for?
The fuse is rated at 1250 V AC (IEC) and 1300 V AC (UL).
Does the P300600 include a striker indicator?
Yes. It incorporates an integrated striker indicator that can be used with a compatible microswitch for remote indication and maintenance monitoring.
Which applications commonly use this fuse?
The P300600 is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and other semiconductor-based power conversion systems.
Trusted by Power Electronics Professionals Worldwide
Mersen Protistor® semiconductor fuses are trusted by OEMs, electrical engineers and industrial maintenance teams worldwide for reliable protection of high-value power electronic equipment.
Item number
P300600
Catalogue No
PC70UD13C63EF
Description
Square Body High-Speed Fuse Protistor® Size 70 aR 1250VAC IEC 1300VAC UL 63A With Striker Open Slot Blades
EAN/UPC Code
3605340330854
Rated voltage AC UL
1300 V
Rated voltage AC IEC
1250 V
Ampere Rating
63 A
AC or DC
AC
Speed/Characteristic
aR
Fuse Size
70
Mounting
Bolted
Clearing I2t At Rated Voltage
1680 A²s
Melting I2t
210 A²s
AC Max I.R./Breaking Capacity
I1: 126 kA
Indication System
Yes
Indication System Type
Striker
Connection/Terminal Material
Silver-Plated Copper
Connection/Terminal Type
Open Slot Blades
Product Width
39.8 mm
Product Length
123.4 mm
Product Height
49.5 mm
Sell Pack Quantity
3 EA
Sell Pack Weight
1.074 kg
Sell Pack Width
127 mm
Sell Pack Length
137 mm
Sell Pack Height
65 mm
Product group
Semiconductor Protection Fuses
Body/Insulating Material
Ceramic
Product Weight
0.358 kg
Power Dissipation at Rated Current Value
26 W
HS Code
85351000
No documents available for this product.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...